Holland, There is no check engine light. VW didn't add one until 1993, my corrado slc had one...
Josh Sent from my iPhone > On Mar 24, 2016, at 6:04 PM, damac2004 <damac2...@sbcglobal.net> wrote: > > ok so ground showed no continuity to that sensor wire. it does with pin 7 i > believe on the ecu connector, so i guess i am good. i kept getting confused > because people were talking about an insulated wire and im thinking a nasty > cable like for tv. when looking these guys over as is, they don't seem > special looking to me. > > also i looked over the car again and i do have 2 knock sensors. they are on > the front of the block close to each, closer to cylinder #1. they each > attach to a harness connector that goes into the loom and to the ecu. so if > i remember right people said 1.8 blocks don't have 2? yet i couldn't fit the > larger im shaft gear into this block that mates to the oil pump it had the > smaller block off plate hole? so still not sure what i have. in included a > picture down below. hopefully i won't need to care. > > here is a link to video of my first cold startup. for some reason it took > like 5 times to start like there was no gas, fuel pump was making noise. > then it started right up. can anybody tell if it sounds ok? i am now having > an issue with timing the car. i tried cold and after a warmup cycle and i > cannot get the pointer to stay still with the light on? it kind of lines up > with the diamond and then it will shoot off a little bit off one way or the > other. if i go further either way from where it is now, when it shoots off > it tends to go in that direction more. i tried connecting the lead near the > distributor cap and at the head. it seems to like this spot the best but im > not sure how accurate it is. im wondering what impact this could have on > smog if im a little off. also not sure if this means my car is having > troubles or if my timing light is messed up. > > https://www.youtube.com/watch?v=GB9yXn61pS8 > > > > > > > >> On Thursday, March 24, 2016 at 10:32:11 AM UTC-7, stevenarguello wrote: >> I think that your loom is good, I wouldn’t mess with it anymore. The Bentley >> shows a circle around the signal wire where that ground meets the O2 signal >> wire instead of a splice and that’s what you have. Maybe check to be sure >> that there’s no continuity between the ground and the O2 signal spade >> connector. >> >> >> On Mar 24, 2016, at 10:48 AM, Holland Phillips <holland...@gmail.com> wrote: >> >> The Motronic ECU does store codes. Since the OBD1 spec didn't go into effect >> until '95, code readers don't work on these cars. Connecting two leads to >> the proper positions of the connectors under the shifter boot and connecting >> a momentary switch to the other ends of the two leads, by using the switch >> to short the leads for a few seconds, the codes are shown by the check >> engine light flashing in various sequences. The Bentley explains all this >> and has a chart showing what the various codes indicate. I don't remember >> exactly where in the Bentley this procedure is, but it's in there somewhere. >> >> ~Holland >> >> On Mar 24, 2016 1:17 AM, "damac2004" <dama...@sbcglobal.net> wrote: >> sorry just to make sure we are on the same page. you are saying the 02 >> sensor black connector is going into the loom to the ecu. and the ground >> wire attached to the firewall is loose and surrounding the 02 sensor wire >> along the same path? i am paranoid and want to see for myself and am >> tempted to cut further upstream to see. >> >> i thought i read about the codes and bought a cord on ebay to convert from a >> little plug underneath the shifter boot i believe that goes to an obd >> reader? i will try it if i read right after i get the sucker going, had to >> rewire the main power and grounds. many wires have fallen to pieces just >> from touching them. scary stuff now that i look closer. >> >> On Thursday, March 24, 2016 at 12:40:03 AM UTC-7, stevenarguello wrote: >> The picture looks just like what I thought it would, the signal wire is the >> one with the connector, the one going to the ground is the shield. I think >> that you're good to go. >> I would have shown you my loom, but it's very different and I thought it'd >> make things more confusing. >> >> Fire it up. >> >> One last thing, I'm pretty sure that your Motronic ecu has codes. I'm not >> sure how easy they are to read or if they help at all. >> >> On Mar 24, 2016, at 1:29 AM, damac2004 <dama...@sbcglobal.net> wrote: >> >> >> >> >> >> i forgot to add this picture. maybe i need to look closer but it looked >> like the connector wire is exposed and touching that main ground leg. is it >> possible the connector has its own cover and is running inside inside the >> ground run? i can try and cut some back and look at it. i was expecting a >> special looking wire, my connector wire doesn't look special? >> >> >> >> i don't really understand how to read the bently. this is the only wire i >> see connected in the 20 pages to the firewall ground on that side. it >> doesn't show a straight run to the control unit but it has a solid line >> crossing into the shielded wire icon on the 02 sensor connected leg. i just >> assumed they were connected or else the ground wire from firewall side would >> go nowhere? >> >> >> >> is this a pretty common harness on other gas vw's of the same era? i wish i >> could see somebodies stock harness with pictures, maybe i can find one at >> picknpull. >> >> >> >> >> >> >> >> >> On Wednesday, March 23, 2016 at 5:21:42 PM UTC-7, stevenarguello wrote: >> So you bought a new 3wire O2 sensor? If so, the black is the signal not the >> ground. (The sensor is grounded through the exhaust?) >> After the orange connector the signal wire back to the ecu is a little >> thicker because it's a coaxial cable, it has a braided shield around the >> signal wire. This shield has a ground and I believe that's the one going to >> the firewall. That's why they look like 2 wires fused into 1. >> (I think, my loom is different.) If I'm way off, I hope someone will let him >> and me know. >> >> There should be an extra female connector for the 2nd knock sensor, unless >> they cut it off. >> >> >> On Mar 23, 2016, at 6:30 PM, damac2004 <dama...@sbcglobal.net> wrote: >> >> hate to bug people but i'm just tidying things up with a new 02 sensor and >> want to make sure before i start it up and time it. i pulled the whole >> harness that goes to the ecu just to make sure. i do only have the 1 knock >> sensor. don't see any special shielded wiring. >> >> the 02 harness side has a black ground going to firewall that goes to the >> ecu. a small area is cleanly exposing wires and the 02 sensor signal wire >> connector is fused to this ground leg. no sign of solder or cuts, looks >> original to me? >> >> i also tried looking up my car in the bently and it matches a later gti 91 >> chasis according to them. it shows the ground location over there on >> firewall rather than the engine block. >> >> i have the 2 white wires from 02 sensor going to stock connectors and their >> colored wires into the ecu harness. >> >> bently shows the ground leg black wire and the 02 sensor connector black >> wire making a left turn into that black ground wire. >> >> so it seems it is wired correctly? >> >> i just don't understand how 02 sensors work, not sure if that black wire is >> a ground wire on all car applications. >> >> On Saturday, March 19, 2016 at 1:24:08 PM UTC-7, stevenarguello wrote: >> The wire you’re touching looks like the O2 signal. In your case it looks >> like the shield might have been pulled off and ran to ground. (That’s a >> guess, could be like that from the factory) The red and yellowish (sorry, >> I’m a little color blind) are the O2 heater. The 2 whites and the lead with >> the electrical tape go to the sensor. >> I think. >> >> There’s only one mounting point for a knock sensor on the 1.8, the 2.0 has >> 2. If you have 2 and they’re both mounted to the block then I’d say that the >> block is 2.0. I know we’ve gone back and forth on this, but I had the exact >> opposite happen to me my ’88 had a 2.0 (the PO didn’t know) I found out when >> I discovered the second KS. >> >> On Mar 19, 2016, at 3:20 PM, Holland Phillips <holland...@gmail.com> wrote: >> >> As Steve mentioned, the O2 sensor signal wire is shielded, similar to a >> coaxial cable. It's basically a regular insulated braided copper wire of >> about 20 gauge, with a braided shield covering it. >> >> ~Holland >> >> On Mar 19, 2016 12:13, "damac2004" <dama...@sbcglobal.net> wrote: >> im pretty sure i have 2 knock sensors? im attaching a picture of what i >> uncovered from electrical tape. looks like a brown wire covered with black >> that goes to top connector from drivers side, its duct taped along i guess >> stock loom. i assumed ground at first but wonder if this could be the 02 >> sensor signal wire? >> >> and just what i thought. i have a black ground wire coming from firewall >> gong to the loom. but an area is all cut away with exposed wiring. the >> wire from outside of loom was wrapped into this exposed ground bundle WITH >> the 02 sensor signal wire??? >> >> this is incorrect right? ground wire is no the same as signal wire for 02 >> sensor it should make an isolated run somewhere? >> >> whats wierd is all the wires but the loose one outside of loom seem to be >> fused together. i can't detect solder and the wires seem to be attached >> firmly inside the black cover. i can't even pull them apart, i would have >> to cut which makes me think it was stock because i don't see breaks further >> down the line. >> >> >> >> >> >> On Saturday, March 19, 2016 at 10:29:29 AM UTC-7, stevenarguello wrote: >> On a typical 1.8 CIS-E the O2 signal wire is shielded and green to an >> insulated male spade connector and there are 2 white heater wires into a >> duplex VW connector. I’m not sure how big of a deal the knock sensor issue >> that you’re going to have is. Your Motronic ECU is going to want 2 knock >> sensor signals, I think it uses one as a baseline reference and the other >> adjusts the spark timing. The 1.8 block only accepts one knock sensor. >> >> On Mar 19, 2016, at 11:31 AM, 'Matthew Yip' via MK2-16v >> <mk2...@googlegroups.com> wrote: >> >> This reminds me of a friend who adamantly stuck to the theory that VW and >> Audi engines are the same because of the engine code. Instead of moving the >> accessories, he installed the complete 1.8t from a VW into an Audi TT. >> >> At start-up, it fired immediately but idled at 2000 rpms. Why? Because VW >> had a 1" fitting underneath the manifold that Audi doesn't use. The moral is >> to never assume and always check the obvious since the obvious isn't always >> obvious <G> >> >> - Matthew - >> >> On Mar 19, 2016, at 11:03, Holland Phillips <holland...@gmail.com> wrote: >> >> Progress! That's awesome! I don't remember the wire colors anymore, but yes, >> one of the wires to the O2 sensor is the heater wire. Hopefully, once you >> set the timing, it will improve things. However, until you get the O2 sensor >> hooked up correctly, it isn't going to run right. But at least you've >> resolved a lot of your issues. I'm happy for you. >> >> ~Holland >> >> On Mar 19, 2016 01:38, "damac2004" <dama...@sbcglobal.net> wrote: >> well i capped off one hole with a bolt/washer and the other with a thick >> plate and gasket. turned the key once to hear the pump prime and then tried >> to start the car and it started right up and idled a bit less than 900 rpm i >> think. >> >> wow do i feel stupid. >> >> i got various little things to fix after poking around but my next problem >> is the cat/02 sensor. i'm going to start fresh with my new cat and 02 >> sensor at this point. i assumed the wiring was ok but noticed some previous >> owner electrical tape and there are numerous wires tied together into a >> bundle thats hooking up to a ground on the passenger firewall. this >> includes a single wire that is zip tied to the outside of the loom coming >> from the drivers side. halfway it turns from black to brown with vw plastic >> connectors. >> >> seems a little goofy at face value to have a single wire shoot all the way >> over there for ground right where all those wires meet. i have to look >> closer but i think something is screwed up if im reading right the 2nd 02 >> sensor connector is a heater wire NOT ground? the other harness with 2 >> white wires goes into the loom. >> >> i have a feeling car isn't even getting a signal from 02 sensor so i need to >> get that straight before installing new one. >> >> i had the distributor at the old setups marks, i will have to time it >> tomorrow i couldn't actually see the marks well when trying the timing light >> in the dark tonight. car runs and is revving out with the stock chip/cams, >> etc. but i noticed right away when i stab the throttle and it comes off the >> idle switch there was a slight gurgle and then it revs out but is reacting >> to pedal. i'm hoping it needs to be timed and that will help. >> >> On Wednesday, March 16, 2016 at 7:56:36 PM UTC-7, damac2004 wrote: >> oh boy i am feeling stupid and think i have found the smoking gun here. >> >> is it possible that having 2 open holes on the back of the intake manifold >> made the car act this way? >> >> this is not a california chasis so no egr stuff. when i pulled the euro >> manifold one hole had a bolt stuck through it with rtv and another hole was >> held by bolts and gasket. >> >> when i was transferring everything over to the stock manifold i remember >> poking down the hole with brake cleaner hose and hit what i thought was >> solid wall on each. at the time never seeing egr stuff assumed it maybe >> would be drilled out for a car that needed that hardware. >> >> i had filled the holes up with brake cleaner with that side up and don't >> think i paid close enough attention so this whole time it was installed on >> the car like that. >> >> tonight as i went to transfer the old parts back on as my last hope effort i >> noticed some leakage when spraying brake cleaner and a light bulb went off. >> so with those holes up if i spray one hole it fills the other hole up. if >> you leave the manifold sit the level of fluid just sits there. when i went >> to tilt sideways one way nothing happened but leaking out the top. when i >> tilted the other way 2 of the runners leaked the fluid out. >> >> i don't know these cars at all. since the car wasn't running right i never >> wanted to let it run long since it wasn't acting like a real car. my mom >> was watching and said i see some smoke and it sounds funny but of course i >> told her its just stuff burning off and that it wasn't running right. >> couldn't really take a chance to look or feel closer. >> >> i have seen people mention these cars can run crappy with vac leaks and they >> don't run without the intake tubes attached? i'm hoping this is what it >> was. going to make some block off plates and gasket to seal those 2 holes >> up tight and then install all the old parts on it and hope like magic its >> back to normal and then i can smog it. >> >> On Tuesday, March 1, 2016 at 10:41:38 AM UTC- >> ... > > -- > You received this message because you are subscribed to the Google Groups > "MK2-16v" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to mk2-16v+unsubscr...@googlegroups.com. > To post to this group, send email to mk2-16v@googlegroups.com. > Visit this group at https://groups.google.com/group/mk2-16v. > To view this discussion on the web visit > https://groups.google.com/d/msgid/mk2-16v/8ea7b42c-985c-44a8-b854-d647b1b5a010%40googlegroups.com. > For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "MK2-16v" group. 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