AMG Posted August 2, 2009 Share Posted August 2, 2009 right then, i have aquired a works van so time to sort out my niggling problems with the Soop. There are five main problems and i am not sure if they are all related.I will list the problems and then what i have already done or checked. 1 - Every now and then it idles very low and lumpy. Easiest way to spot there is a problem is that my blitz turbo timer keeps increasing (the time that is) as if the engine is really working hard. 2 - Over the last week i have noticed that at randon the engine suddenly revs/idles higher. Up to about 1500rpm from the normal 700. It only does it it for a few seconds before dropping back down to 700. 3 - First time it has done this, but today, i was moving the car and left it idling for a about 30 secs after start up, when it stalled. Them it was a right bugger to start. Took about 10secs to fire up. 4 - Last one. Every now and then i spot a little puff of blue smoke out of the exhaust. Just about every time when i have prob 1 and on warm days when i pop it into reverse on my drive after a 15 min run. Probably happens more but i am never usually looking behind me 5 - Now and then i get a bit of a missfire and Kangaroo effect when driving round town. It only lasts a few seconds, then i boot it in anger lol Now for what i have checked. Cleaned out the IACV thing at back of the Throttle body, cleaned the O2 sensor on the downpipe. Changed plugs and have tried checking error codes but i must have bad solder as no lights came on at all Any help and advise is welcome and very apreciated as none of these problem are helping convince the mrs that we should not part chop the Soop for an Audi . From what i have read, idling problems can be caused by one of a million things so i am getting confused. Quote Link to comment Share on other sites More sharing options...
Dave Posted August 2, 2009 Share Posted August 2, 2009 have you tried resetting the ecu Quote Link to comment Share on other sites More sharing options...
AMG Posted August 2, 2009 Author Share Posted August 2, 2009 yeah, tried that the other week when i cleaned the IACV. Could it be a connector somewhere that has gone brittle or a sensor which is buggered? If so which one lol Quote Link to comment Share on other sites More sharing options...
RobSheffield Posted August 2, 2009 Share Posted August 2, 2009 Check all Earths and power cables, battery wise etc. Make sure the battery is charged, then check for fault codes and report back Im pretty sure most of those are the same cause. Quote Link to comment Share on other sites More sharing options...
AMG Posted August 2, 2009 Author Share Posted August 2, 2009 bloody hell. Just tried connecting the terminals used for the VVTI error code check and it worked! It is a Mines ECU that i have had foir about 4 years. I got codes 32, 63, and 64 as far as i could tell. Quote Link to comment Share on other sites More sharing options...
RobSheffield Posted August 2, 2009 Share Posted August 2, 2009 Ahh VVTi, may be different codes. But then its a Mines ECU... Have you only recently fitted the ecu? Quote Link to comment Share on other sites More sharing options...
AMG Posted August 2, 2009 Author Share Posted August 2, 2009 no mate, the ECU has been on for about 4 years. I origionally bought it to save having the FCD fitted as the one i had was dodgy. Quote Link to comment Share on other sites More sharing options...
pistonbroke Posted August 2, 2009 Share Posted August 2, 2009 Hmmm, The codes correspond to nothing I can find. Not the original codes or the VVTI ones. I can't find a mines error code list either. I thought though, that the mines ECU is just a standard ECU with an internal tweek, like piggyback chip, but it's inside, then they stick a plaque thing on it and flog it. So I wouldn't have thought the error code reading would be any different. But from reading through your list, and the things you have already tried. I would probably see if I could borrow a TPS from someone and do a quick swap to see if it makes a difference. I'm sure a knackered TPS would cause a lot, if not all the symptoms you have described. Apart from the smoke thing, but I suspect that's just valve stem seals and nothing too much to worry about if it's only little puffs of smoke. Quote Link to comment Share on other sites More sharing options...
AMG Posted August 3, 2009 Author Share Posted August 3, 2009 this is what i have done today: Started and ran on idle for a few mins with no problem. I then disconnected the throttle postion plug. The revs increased slightly but still idled ok. Connected it back up and revs dropped back down again. Then checked what code that revealed and it was 31. Different to the code which i already have so does that mean i can rule out my TPS? Quote Link to comment Share on other sites More sharing options...
pistonbroke Posted August 3, 2009 Share Posted August 3, 2009 I suppose it does, yes. Code 31 in the book says air flow meter?!? I'm a bit concerned as I have a mines ecu in mine too. Quote Link to comment Share on other sites More sharing options...
pistonbroke Posted August 3, 2009 Share Posted August 3, 2009 Another easy check I suppose is checking for air leaks. Quote Link to comment Share on other sites More sharing options...
AMG Posted August 3, 2009 Author Share Posted August 3, 2009 have you ever checked yours for error codes? Might be worth disconnecting your TPS plug to see if it comes up with code 31 to confirm they all do the same Quote Link to comment Share on other sites More sharing options...
pistonbroke Posted August 3, 2009 Share Posted August 3, 2009 I will do mate when I get it on the road again, I've only driven it three times since I've had it. Quote Link to comment Share on other sites More sharing options...
AMG Posted August 5, 2009 Author Share Posted August 5, 2009 right then, today i tried reseting the ECU but i can not get rid of the stored codes. I removed all the fuses labelled EFI for a good 3-4 minutes but when i check the error codes before i even start the engine, the same codes are still there. I think i need to get hold of a standard j-spec ecu and work out what is wrong form the error codes indicated on that. Quote Link to comment Share on other sites More sharing options...
pistonbroke Posted August 5, 2009 Share Posted August 5, 2009 Sorry mate, I added the info to your other thread, but there are a couple of ECU's in the for sale section at the moment. £65 delivered. I believe Mr Whiffen has a boost/fuel cut gizmo for about £100 which you could use. I'll check my ECU for you as soon as I can. Also, you may want to disconnect the battery to reset things for longer than a couple of minutes, I'm sure I've read that 30 minutes is needed. Quote Link to comment Share on other sites More sharing options...
AMG Posted August 5, 2009 Author Share Posted August 5, 2009 going to leave it overnight and try tomorrow evening mate. Thing is, the ECU might be ok but is trying to tell me something else is wrong. It just dont speak a language we understand Quote Link to comment Share on other sites More sharing options...
AMG Posted August 5, 2009 Author Share Posted August 5, 2009 tonights update! The Supra fairies seem to have fitted me a Blitz access ecu once upon a time!! Forget all the stuff about a mines ecu, i dont know where that has gone, i know i had one once. Quote Link to comment Share on other sites More sharing options...
pistonbroke Posted August 5, 2009 Share Posted August 5, 2009 Does that mean you now have a Blitz ECU?, or have you always had one fitted? Quote Link to comment Share on other sites More sharing options...
AMG Posted August 6, 2009 Author Share Posted August 6, 2009 I curtrently have a Blitz ecu. I know i used to have a mines as that is what i swapped to from the standard one. No idea when i fitted the Blitz after that Quote Link to comment Share on other sites More sharing options...
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