Baby sitting at the mo' just checked email on daughters laptop, answers; MAF wiring was not shortened, just looped it around to take up the slack. Rev counter worked perfectly all the way home on Sunday. I will remove the inlet hose to the throttle body when I get back to check that butterfly fully closes.
Geoff. On 7 June 2010 13:59, Steve Kodz <st...@h4-turbo.co.uk> wrote: > OK, here it goes: > > MAF - we have cleaned the connections and checked that the connections look > good. I was able to get a good idle by disconnecting the MAF unit from the > inlet pipe and changing how much of the area of the MAF was flowing into > the > inlet - ie bleeding extra air into the engine that the MAF wasn't > measuring. > > Geoff - can you remember if I shortened the MAF wiring, in case there is a > poor joint causing the issue? You might need to check the loom if you > can't > remember. > > Power Steering Switch - we had wiring for this, which when bridged reduced > the idle by 100rpm, so I've cut the connector off and soldered the wires > together. A small step in the right direction, but this is not the fault. > > TPS (Throttle pot) - I forgot to test the ranges and output, but I was able > to swap the original one with one from an RS1800i inlet and this made no > difference. > > ISCV - This was taken off and cleaned with WD40. We also applied varied > volts and amps to watch the action, which all appears to be OK. > > Wiring Loom - we used the donor loom. > > Air Temperature Sesnor/CAM Sensor - We removed the ATS from the plastic > inlet, as it had a different connector to the one on the alloy inlet, but > had the same thread. I believe this means we have the connectors on the > correct way round. The CAM Sensor uses the same style connector as the > injectors, but is keyed differently, where the ATS is a different style. > > Road Speed Sensor - Disconnecting the road speed sensor didn't appear to > make any difference. > > LAMBDA - Again disconnecting didn't appear to make any difference. > > One thing to note is when Geoff arrived he mentioned that the rev counter > started flickering about, then died completely. When I checked the > connection I found that it all looked OK and even got an rpm reading on a > multimeter that matched the engine speed. Then the rev counter started > working again, but if I connected the multimeter it would stop - almost > like > there is a weak signal. Could this be related? > > The hose pipe was used (and Carole didn't even get wet!) to test the engine > for air leaks and none were found. The whole area around the inlet was > given a good soaking, but the engine still idled too high. > > Geoff - it could be worth removing the inlet hose to check the throttle > butterfly is closing completely, but I'm guessing it will be. > > I think this is almost driving me as mad as it is Geoff - thanks to all for > the suggestions. > > Does anyone know a source for good ODB2 readers and software, as if I'm > going to do more work with Zetecs and other modern engine management > systems > this could be a good investment. > > Regards, > Steve > -- > www.h4-turbo.co.uk > www.quantumowners.co.uk > www.quantumcars.co.uk > www.quantumheritage.co.uk > > On Monday 07 Jun 2010, Andy Heaton wrote: > > Geoff. > > > > After breaking down on the M25 with your car the other Friday Eve. Did > > you or Steve re do the connections to the Maf sensor as they were > > corroded....as the symptoms were very erratic idle, high idle and > > eventually fuel loss. when the breakdown chap played with the connection > > it improved and idled properly, when we arrived at yours it was still > > idling a little high though. > > > > Andy. > > ----- Original Message ----- > > From: geoff ward > > To: quantumowners@googlegroups.com > > Sent: Monday, June 07, 2010 11:06 AM > > Subject: Re: [Quantum Owners] Poor idling/running Zetec > > > > > > Jim, > > > > Disconnecting the MAF was very similar to disconnecting the idle speed > > control valve or the throttle position sensor, it will idle at a more > > sensible speed but runs really rough. We used the loom from the doner > > escort, plastic inlet. > > > > Geoff. > > > > > > > > On 7 June 2010 10:54, Jim Hearne <j...@quantums.info> wrote: > > > > When you fitted the alloy inlet manifold which injector wiring loom > > did you fit, the one from the alloy manifold or the one from the Escort > > plastic manifold ? > > > > As somebody else found recently there are slight wiring differences > > between the 2 involving the cam sensor and air temperature sensors. > > > > Jim > > > > > > > > On 07/06/2010 10:42, geoff ward wrote: > > Hi Jim, > > > > Not sure about that, don't know what you mean by throttle pot, > > hopefully Steve will respond. At the moment the car is in Aylesbury but > > has been at Steve's near Woking. > > > > Geoff. > > > > > > On 7 June 2010 10:28, Jim Hearne <j...@quantums.info> wrote: > > > > Did you do any electrical tests on the throttle pot. > > Where is the car ? > > > > Jim > > > > > > > > On 07/06/2010 10:19, geoff ward wrote: > > Hi all and thanks again for all the helpful suggestions. > > Steve and I have checked and double checked through all that > > has been suggested, every thing seems to work as it should individually. > > The idle speed control vale has been thoroughly cleaned again and > > checked to see that it works, then refitted with a new gasket and that > > it receives input, electronically, from its plug. Steve has checked all > > the connections with his testing equipment, it's all beyond me!, and it > > all works. We have reset the ECU yet again, despite spending all day > > Saturday trying to get it to run properly, it still has the same > > problem. Thank you Steve for all the time and effort you have put in so > > far to try and fix it. So if any of you have any further suggestions, we > > would be pleased to hear them, as Carole and I are getting worried now, > > with only one weekend to go before we head to Scotland. > > > > Yours hopefully Geoff. > > > > > > On 1 June 2010 22:59, geoff ward <carole.ge...@gmail.com> > > wrote: > > > > Thank you to all for your help and advice, I will do a bit > > more checking and cleaning of contacts etc tomorrow. The strangest > > thing,as Steve mentioned in his original post, is that the engine idles > > perfectly at around 900 - 1000 rpm (according to the XR2 rev counter) > > when you first start it up. I have followed the method for resetting the > > ECU 4 times know and it has had good idle speed every time for the first > > stage of the reset, ie allow to idle for 10 -15 mins (DO NOT TOUCH THE > > THROTTLE) it only goes all wrong after that! As soon as you start to > > drive it, that's when it wont idle properly anymore. > > > > Carole say thank you all. > > > > Regards, Geoff. > > > > On 1 June 2010 12:29, Steve Kodz <st...@h4-turbo.co.uk> > > wrote: > > > > We're getting a very bad idle with the Zetec in Carole's > > 2+2. With the idle speed control valve connected from cold it will idle > > nicely at around 1000rpm, if just left to idle and warm through. > > However if you rev, or drive that car the best idle to can get is > > between 2-3,000 rpm, which isn't great :( The car also drives badly, > > having hesitation and then you fight the engine on the over run. > > > > It is a lot better with the ISCV disconnected, but still > > not great. The idle is still a bit high, being around 1,200 rpm and it > > still doesn't drive that great. > > > > We've tried resetting the ECU to re-program it and Geoff's > > cleaned all the electrical contact and the ISCV. Any ideas what else > > needs to be done to get this ready before the HHII? > > > > Regards, > > Steve > > -- > > www.h4-turbo.co.uk > > www.quantumowners.co.uk > > www.quantumcars.co.uk > > www.quantumheritage.co.uk > > > > -- > > You received this message because you are subscribed to the > > Google Groups "Quantum Owners Group" group. To post to this group, send > > email to quantumowners@googlegroups.com To unsubscribe from this group, > > send email to quantumowners-unsubscr...@googlegroups.com For more > > options, visit this group at > > http://groups.google.com/group/quantumowners?hl=en > > > > IMPORTANT NOTE: All information presented herewith is > > provided on an "As Is" basis, without warranty or the implication > > thereof. Neither the Quantum Owners Club nor the individuals associated > > with the Quantum Owners Club or in the preparation of the above > > information shall have any liability to any person or entity with > > respect to liability, loss, or damage caused or alleged to be caused > > directly or indirectly by the instructions contained within this or > > related message(s). > > > > > > > > > > > > You received this message because you are subscribed to the > > Google Groups "Quantum Owners Group" group. 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Neither > > the Quantum Owners Club nor the individuals associated with the Quantum > > Owners Club or in the preparation of the above information shall have > > any liability to any person or entity with respect to liability, loss, > > or damage caused or alleged to be caused directly or indirectly by the > > instructions contained within this or related message(s). > > -- > You received this message because you are subscribed to the Google Groups > "Quantum Owners Group" group. > To post to this group, send email to quantumowners@googlegroups.com > To unsubscribe from this group, send email to > quantumowners-unsubscr...@googlegroups.com > For more options, visit this group at > http://groups.google.com/group/quantumowners?hl=en > > IMPORTANT NOTE: All information presented herewith is provided on an "As > Is" basis, without warranty or the implication thereof. Neither the Quantum > Owners Club nor the individuals associated with the Quantum Owners Club or > in the preparation of the above information shall have any liability to any > person or entity with respect to liability, loss, or damage caused or > alleged to be caused directly or indirectly by the instructions contained > within this or related message(s). > -- You received this message because you are subscribed to the Google Groups "Quantum Owners Group" group. To post to this group, send email to quantumowners@googlegroups.com To unsubscribe from this group, send email to quantumowners-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/quantumowners?hl=en IMPORTANT NOTE: All information presented herewith is provided on an "As Is" basis, without warranty or the implication thereof. Neither the Quantum Owners Club nor the individuals associated with the Quantum Owners Club or in the preparation of the above information shall have any liability to any person or entity with respect to liability, loss, or damage caused or alleged to be caused directly or indirectly by the instructions contained within this or related message(s).
