[MBZ] Climate Control 1980 300D
Continuing on the intermintant ability for the system to deliver anything but heat. I moved the interior temp sensor to be directly in the way of the side vent. Selected 65 degrees and viola it worked. I seems that the foam tube that I used wasn't sealed enough and my fat hands loosened it up! Drove the car after changing the fuel filter and running purge through it and all seems fine. Just have to figure out why letting it sit since last friday it had a dead battery? Douglas.. ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
[MBZ] Climate Control 1980 300D
I am going to check the battery today. It is 5 years old and might be its time. I did change the AC Amplifier when I was working on the temp sensor foam tube. I will see if all is well today I have the light out of the glove compartment. Though I thought that light only worked with the key on? Thanks Douglas ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
[MBZ] Climate Control 1980 300D
Well I hope that someone can answer this for me. Yes I am still working on it. It seems that the system only wants to deliver heat. This is through the correct vents. Now I am thinking that the in car sensor is calling for heat. So I change the sensor, install it near the speaker and then it only calls for heat. If I stick it in the side vent I am able to select different temperature settings with the console dial. I am going to disconnect the foam tube and see if it will work on different temp settings. What is going on with that tube is it a vacuum to draw air in slightly from the cabin? Any and all ideas appreciated. Douglas ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
[MBZ] Climate Control 1980 300D
Scott I looked at the blower and there is a side port for the sensor tube though I continues to the kick panel? What the hell does it connect to! I think I need to go to pick and pull. I would really hate to have to replace something behind the fender with all that glue! Thanks.. Douglas ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
[MBZ] Climate Control 1980 300D
I did a research on air jet nozzle and one of the articles said there is a service repair in the manual. 83-122/1. Does any one have access to the manual and maybe can send it to me? Please. I am not going to give up on this. I have done so much, and am so close! Thanks.. Douglas ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
[MBZ] Climate Control 1980 300D
Philip look it up I assume that you adjust that along with the dial for heat or cold? Douglas ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
[MBZ] Climate Control 1980 300D
Scott I want to thank you again for your help. I went to the pick n pull and got a air jet nozzle. Which is not easy to get out! while there I picked up the sensor tube hose out of a 1982 300D the sensor in the middle of the dash. I took out the air nozzle jet out of my car and there was nothing wrong with it. Put it all back together and used the hose from the '82, cut it down some and so far it works fine! So using the foam pipe insulation just leaks too much air, Probably through it. Thanks again All! Douglas Ps any helpful hints on removing a steering wheel I thought it was just the allen nut but couldn't get the one at pick n pull to budge! was using a 3/8 ratchet. ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
[MBZ] Climate control 1980 300D
I want you all to know that I have been struggling with the climate on my 300D for some time now. Have received alot of support from several people here and think that I have narrowed the last bit down. It seems that the in car sensor the is by the right front speaker is Intermintant! To open on to infinity at times I have changed it out with another and though I think it stuck once (just this morning) it has worked perfectly for a whole week! My thanks to all that contribute to this wonderful list! Douglas.. Ps what is the best late model diesel MBZ has.. am looking in the future.. maybe 5 - 10 years to replace.. my 123. I am confused with all the rodbender themes. ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
[MBZ] Climate Control 1980 300D
I have repaired the climate control (servo) on my car and it has been working fine for quite some time. A few weeks ago it went to heat only blowing from the correct vents. So its not in the default mode. I pulled the amplifier and basically plugged it in and then it started working correctly. It has worked for several weeks and today it went back to the same condition. Its as if the in car sensor is calling for heat. I am looking for some ideas as to what is causing this? Douglas ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Climate Control 1980 300D
Check for a glove box or trunk light staying on. Peter ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Climate Control 1980 300D
> Check for a glove box or trunk light staying on. Evil Chrysler Servos from Hell (TM) that can't fully park themselves are well-known battery drainers. -- Jim ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Climate Control 1980 300D
How would this cause funky climate control action? -- Luther KB5QHUAlma, Ark '87 300SDL (272,xxx mi) head case '85 Ford F250 6.9 diesel (x58,xxx mi) BioBeast '82 300CD (170 kmi) '82 300D (74 kmi) getting donor engine-sold '85 300D (280,176) parts car sans engine Quoting Peter Frederick <[EMAIL PROTECTED]>: > Check for a glove box or trunk light staying on. > > Peter > > ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Climate Control 1980 300D
How would this cause funky climate control action? -- Luther KB5QHUAlma, Ark '87 300SDL (272,xxx mi) head case '85 Ford F250 6.9 diesel (x58,xxx mi) BioBeast '82 300CD (170 kmi) '82 300D (74 kmi) getting donor engine-sold '85 300D (280,176) parts car sans engine Quoting Peter Frederick <[EMAIL PROTECTED]>: > Check for a glove box or trunk light staying on. > > Peter > > ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Climate Control 1980 300D
Douglas, In my case, the battery drain turned out to be a bad rectifier in the alternator. But diagnosis is not hard. I connected an ammeter (multimeter) in series with one of the battery cables and pulled fuses one at a time looking for the drain. After all the fused circuits checked OK, I went to the ETM schematic to check all the unfused feeds. Only took an hour or two. You will note that the clock always draws a small amount of power, that's normal. Scott -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] Sent: Thursday, December 27, 2007 09:54 To: Mercedes List Subject: [MBZ] Climate Control 1980 300D I am going to check the battery today. It is 5 years old and might be its time. I did change the AC Amplifier when I was working on the temp sensor foam tube. I will see if all is well today I have the light out of the glove compartment. Though I thought that light only worked with the key on? Thanks Douglas ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Climate Control 1980 300D
Replace the aspirator motor, there is a small fan that pulls air across the sensor. If it's bad, you will get the same effect as no hose -- the temp will shoot way up and way down in the car as heat or cooling slowly penetrate to the sensor. Peter ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Climate Control 1980 300D
I don't believe this model used an aspirator motor. Instead it used an ejector (air jet nozzle) driven by bleed air from the blower. Maybe that or the connections to it are bad? -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Peter Frederick Sent: Saturday, December 29, 2007 17:15 To: Mercedes Discussion List Subject: Re: [MBZ] Climate Control 1980 300D Replace the aspirator motor, there is a small fan that pulls air across the sensor. If it's bad, you will get the same effect as no hose -- the temp will shoot way up and way down in the car as heat or cooling slowly penetrate to the sensor. Peter ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Climate Control 1980 300D
> I am going to disconnect the foam tube and see if it will work on > different temp settings. What is going on with that tube is it a > vacuum to draw air in slightly from the cabin? Exactly. The 124/126 use aspirator motors, others just tap the suck side of the main blower. (Not sure about the 201.) If either side is disconnected, due to jostling or foam rot, cabin temperature regulation goes all to hell. -- Jim ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Climate Control 1980 300D
> I am going to disconnect the foam tube and see if it will work > on different temp settings. What is going on with that tube is > it a vacuum to draw air in slightly from the cabin? > > Douglas The tube is just a way to draw air across the temperature sensor. There should be a small (0.5 inch) "vent" in the flat top of the dash, right in the middle (left to right). That is the temp sensor. But to be sure there is air flowing over it so it can get an accurate reading, there is a hose going to the blower motor "suck" side. This way there is always cabin air going through the sensor. I altered mine. Rather than have an automatic control, I removed the temperature-variable-resistor with a fixed resistor. This changed the red/blue knob from a thermostat to a temperature control (like the old manual systems). I don't remember what resistor value I used, but I could look it up. -- Philip ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Climate Control 1980 300D
> Subject: Re: [MBZ] Climate Control 1980 300D > > I am going to disconnect the foam tube and see if it will work on > > different temp settings. What is going on with that tube is it a > > vacuum to draw air in slightly from the cabin? > > Exactly. The 124/126 use aspirator motors, others just > tap the suck side of the main blower. (Not sure about > the 201.) If either side is disconnected, due to jostling > or foam rot, cabin temperature regulation goes all to hell. > > -- Jim I've had success with cleaning and applying ATF to get one of these working again- this on a w126 300sd. Tony Wirtel ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Climate Control 1980 300D
> Philip look it up I assume that you adjust that along with the > dial for heat or cold? > > Douglas Yup. Turn the knob toward blue if it's too warm, toward red if it's not warm enough. No thermostat action at all. I actually prefer it to "the car adjusts the temp for me". # pause while I dig# I failed to find my notes. *grrr* So I went to the car itself. From what I saw and what I remember... The resistor value that I used is 11,310 ohm. I got to this value with two resistor in series. As I recall, this value came from Climate/83-602a.pdf on the CD manual. There is a table there that show the relationship between temperature and expecteded resistance 15 C (59 F) 15.7 k ohm 25 C (77 F) 10.0 k ohm 35 C (95 F) 6.5 k ohm 60 C (140 F) 2.5 k ohm The sensor is a bit of a pain to get to, especially the connector. It is in the middle of the two fresh air vents. I think I got to it last time with the glove box and instrument panel removed. Maybe I had the top panel of the center cosole out also. The fresh air vent boots really get in the way. The sensor itself is held in with via friction. There is a plastic ring that the body of the sensor fits through. The grating that's visible is larger than the body. The plasting ring underneath holds the sensor in place by squeezing the dash. The connector is a two pin and fastened by friction-only - that is, no latch that has to be unlatched. The pins are vertical, so the connector unplugs by moving straight down. The sensor has two archways on the body that allow access to the sensor side of the connector pins. I cut off the original wire on one side and soldered each end of the resistor 'chain' to each of the pins. -- Philip ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Climate Control 1980 300D
Douglas, As I understand it, bleed air from the blower passes through that plastic thing and then exhausts behind the kick panel. There is a venturi in the plastic thing that creates a little suction to pull air across the sensor via the foam tube. I don't think there is actually anything behind the kick panel, it just dumps air into the cavity. The black plastic thing connects to the blower and two hoses: the foam tube to the sensor and a plastic hose to the kick panel. The whole idea is just to draw some cabin air across the sensor. Scott -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of jgiels Sent: Saturday, December 29, 2007 18:25 To: Mercedes mailing list Subject: [MBZ] Climate Control 1980 300D Scott I looked at the blower and there is a side port for the sensor tube though I continues to the kick panel? What the hell does it connect to! I think I need to go to pick and pull. I would really hate to have to replace something behind the fender with all that glue! Thanks.. Douglas ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Climate Control 1980 300D
Douglas. I'm attaching 83-122 (from my 83 300SD ACC manual which has a similar setup). It may be educational. Scott -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of jgiels Sent: Saturday, December 29, 2007 18:46 To: Mercedes mailing list Subject: [MBZ] Climate Control 1980 300D I did a research on air jet nozzle and one of the articles said there is a service repair in the manual. 83-122/1. Does any one have access to the manual and maybe can send it to me? Please. I am not going to give up on this. I have done so much, and am so close! Thanks.. Douglas ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com -- next part -- A non-text attachment was scrubbed... Name: 83-122.pdf Type: application/pdf Size: 230509 bytes Desc: not available Url : http://okiebenz.com/pipermail/mercedes_okiebenz.com/attachments/20071230/f8ee4606/attachment.pdf ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Climate Control 1980 300D
Too bad you had so much trouble isolating this problem. The OEM foam pipe deteriorates fairly quickly. Mine was less than 4 years old and it crumbled into sticky chunks when I bumped it while changing the ACC amp. It's a tight fit, but most folks recommend replacing the OEM foam tube with a piece of foam pipe insulation from Lowes, Home Depot, etc. It's cheap and pretty durable. Scott -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] Sent: Sunday, December 30, 2007 17:46 To: Mercedes List Subject: [MBZ] Climate Control 1980 300D Scott I want to thank you again for your help. I went to the pick n pull and got a air jet nozzle. Which is not easy to get out! while there I picked up the sensor tube hose out of a 1982 300D the sensor in the middle of the dash. I took out the air nozzle jet out of my car and there was nothing wrong with it. Put it all back together and used the hose from the '82, cut it down some and so far it works fine! So using the foam pipe insulation just leaks too much air, Probably through it. Thanks again All! Douglas Ps any helpful hints on removing a steering wheel I thought it was just the allen nut but couldn't get the one at pick n pull to budge! was using a 3/8 ratchet. ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Climate Control 1980 300D
> Ps any helpful hints on removing a steering wheel I thought it was > just the allen nut but couldn't get the one at pick n pull to budge! > was using a 3/8 ratchet. Is just the allen bolt. And thread sealer. If you ream out the Allen it gets a lot harder! I took off the pad (no airbag) and used a cold chisel and BFH along the periphery of that bolt. It came out, but it looks like hell now. I got another at the U-Pull, but I haven't installed it yet. -- Jim ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Climate control 1980 300D
The 3.5L version of the 603 engine was subject to aquiring bent rods in normal service. There are several theories as to why this happened, but the result was that either the engine had to be completely rebuild with new rods, pistons, liners, and bearings, or a new long block purchased -- about $7000 either way. Not nice, and once the rods bent the first sign was usually a huge cloud of blue smoke The W124 chassis is quite nice -- and very safe (I got hit in the driver's door by a 3/4 ton van doing 60 and got away almost unhurt) and the W126 cars are very very nice. The W140 chassis is also quite nice, but suffers from expensive electronics problems, to the point no one wants them. The W210 chassis diesel is nice, too, but I don't know much about those. Peter ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Climate control 1980 300D
Ok bit what years and versions is the 3.5L 603 engine? thanks Douglas - Original Message - From: "Peter Frederick" <[EMAIL PROTECTED]> To: "Mercedes Discussion List" Sent: Friday, February 15, 2008 7:20 PM Subject: Re: [MBZ] Climate control 1980 300D > The 3.5L version of the 603 engine was subject to aquiring bent rods > in normal service. There are several theories as to why this > happened, but the result was that either the engine had to be > completely rebuild with new rods, pistons, liners, and bearings, or a > new long block purchased -- about $7000 either way. Not nice, and > once the rods bent the first sign was usually a huge cloud of blue > smoke > > The W124 chassis is quite nice -- and very safe (I got hit in the > driver's door by a 3/4 ton van doing 60 and got away almost unhurt) > and the W126 cars are very very nice. The W140 chassis is also quite > nice, but suffers from expensive electronics problems, to the point > no one wants them. The W210 chassis diesel is nice, too, but I don't > know much about those. > > Peter > > > ___ > http://www.okiebenz.com > For new parts see official list sponsor: http://www.buymbparts.com/ > For used parts email [EMAIL PROTECTED] > > To Unsubscribe or change delivery options go to: > http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Climate control 1980 300D
jgiels wrote: > Ok bit what years and versions is the 3.5L 603 engine? If it's in a W126 or a W140 in the USA in the 1990s, it's a 350, even after they started calling them 300SD or S300D. ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Climate control 1980 300D
On Feb 15, 2008, at 7:20 PM, Peter Frederick wrote: > and the W126 cars are very very nice. The W140 chassis is also quite > nice, but suffers from expensive electronics problems, to the point > no one wants them. I'll note once you stick in the revised (double/triple/etc) part the stability improves greatly. However the general stigma impacts the price. You just need to find one for which the owner has paid the price of fixing it all and buy it cheap. Then it's golden, and yes mine is not for sale... John 1983 300TDt 388k Kilometers (mobil 1 Delvac) 1990's 300TDt 215k Kilometers (mobil 1 Delvac) 1993 500SEL 205k Kilometers (mobil 1 Delvac) ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Climate Control 1980 300D
Dirty connections? Try cleaning all the plugs and sockets with DeOxit (from Radio Shack?). On Sat, Dec 13, 2008 at 7:43 PM, Douglas wrote: > I have repaired the climate control (servo) on my car and it has been working > fine for quite some time. A few weeks ago it went to heat only blowing from > the correct vents. So its not in the default mode. > > I pulled the amplifier and basically plugged it in and then it started > working correctly. It has worked for several weeks and today it went back to > the same condition. Its as if the in car sensor is calling for heat. > > I am looking for some ideas as to what is causing this? > > Douglas > ___ > http://www.okiebenz.com > For new and used parts go to www.okiebenz.com > To search list archives http://www.okiebenz.com/archive/ > > To Unsubscribe or change delivery options go to: > http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > -- OK Don, KD5NRO Norman, OK "There are only three sports: bullfighting, motor racing, and mountaineering; all the rest are merely games." - Ernest Hemingway '90 300D (Rattled), '92 300D (Saber), ''97 Ply Grand Voyager (Vincent van-go) ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Climate Control 1980 300D
Douglas - Hmmm, now if it stayed hot I could tell you the most likely cause but intermittent hot...maybe some bad solder joints on the amp board? Do you see past signs of overheating around the big resistor? Barry > > I pulled the amplifier and basically plugged it in and then it started > working correctly. It has worked for several weeks and today it went back > to the same condition. Its as if the in car sensor is calling for heat. > > I am looking for some ideas as to what is causing this? > > Douglas ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Climate Control 1980 300D
I am looking for some ideas as to what is causing this? Wretched Evil Chrysler ACC From Hell? Icky. -- Jim ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Climate Control 1980 300D
Douglas - I've been thinking about this and the first thing you may want to check is to verify if your servo is moving at all. A real good check is to turn your engine on and run it for a few minutes then shut it off and listen to see if you can hear the servo returning to the park position. If you're not sure, then pop the hood and repeat the test. If things are quiet it should be fairly obvious if is running. Let us know how that goes. Barry > > > > I pulled the amplifier and basically plugged it in and then it started > > working correctly. It has worked for several weeks and today it went > back > > to the same condition. Its as if the in car sensor is calling for heat. > > > > I am looking for some ideas as to what is causing this? > > > > Douglas ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Climate Control 1980 300D
Well I was going to get to looking at the connections for the Climate Control this weekend. Though Tuesday morning when I went to go to work (my monday) the battery was dead. Seems that I had inadvertantly switch on the rear cabin light and left it on since Saturday. So after charging the battery Tuesday night, Wednesday I took the car to work and the Climate Control worked correctly! Any further ideas guys? Douglas. I have repaired the climate control (servo) on my car and it has been working fine for quite some time. A few weeks ago it went to heat only blowing from the correct vents. So its not in the default mode. I pulled the amplifier and basically plugged it in and then it started working correctly. It has worked for several weeks and today it went back to the same condition. Its as if the in car sensor is calling for heat. I am looking for some ideas as to what is causing this? Douglas ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
[MBZ] climate control 1980 300D Chrys servo
I also changed the in car sensor, the a/c amplifier. All with the same results all heat all the time. Now I have a Temp Control Regulator though I don't see it in my car? Would just like to change it and see if it makes a difference. Though I don't see where it is on my car! Can someone help me find this box? TIA Douglas ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] climate control 1980 300D Chrys servo
Douglas - For good reason I think as it does not exist that I know of. The temperature regulation is performed by a resistor bridge that consists of an ambient temp sensor, outside the cabin mounted on the firewall, an inside temp sensor (likely the one that you replaced, most likely unnecessarily), and the variable resistor in the control unit. The two "sensors" are thermistors where the resistance changes with temperature. They are situated in the configuration of a Wheatstone bridge. There is a variable resistor, the one in the temperature control dial, and a fixed resistor in the control unit. The four resistors make up the bridge. The bridge seeks equilibrium and the system moves the servo one way or another(i.e. towards heating or cooling)till the equilibrium is achieved. When you move the temperature dial it unbalances the bridge and the control unit then moves the servo as required to compensate and re-balance the bridge. It is really quite a simple system. The whole thing falls down though if the servo is not moving. That is why I said that making sure the servo is moving is the very first step, and the easiest as well. S...is your servo moving? BTW, when you replaced the servo amplifier, was the resistor crispy crittered? Barry Now I have a Temp Control > Regulator though I don't see it in my car? Would just like to > change it and see if it makes a difference. Though I don't see > where it is on my car! Can someone help me find this box? > > TIA Douglas ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
