SteveW Posted December 14, 2015 Share Posted December 14, 2015 (edited) Hi All, Bit of an odd one this. I've been searching google for the past hour or so and can't find anything like my symptoms. Sometimes my car behaves very strangely at start up and wondering if anyone can help. When I start the car it immediately revs up to the normal 1100ish rpm then over about 1 second the revs fall away to about 100rpm and sometimes the car will stall. Other times it saves itself and revs back up to 1100rpm and is then fine. http://s30.photobucket.com/user/SteWilf/media/BFCA958C-DC34-456D-BE55-15951FD48CE4.mp4.html If it stalls when I restart the car it performs normally without struggling. I have fitted a new battery but it hasn't helped. Any idea what might be the cause? I have no fault codes and the car runs fine once started. Its totally random when it happens but cold mornings do seem to make the stall more likely. Thanks Steve Edited February 12, 2016 by SteveW Quote Link to comment Share on other sites More sharing options...
Tricky-Ricky Posted December 14, 2015 Share Posted December 14, 2015 Try cleaning all the engine bay earths, and the battery earth point, induction air leaks, have a careful listen around the plenum joint, and the vacuum hoses, if your satisfied that there are none, try resetting/relearning the throttle, there should be a thread on this procedure if you do a search. Quote Link to comment Share on other sites More sharing options...
KUGT4 Posted December 14, 2015 Share Posted December 14, 2015 clean the maf sensor banker Quote Link to comment Share on other sites More sharing options...
ZMANALEX Posted December 14, 2015 Share Posted December 14, 2015 Clean the maf sensor and do the resets. That should sort your issues. If not report back. 1 Quote Link to comment Share on other sites More sharing options...
SteveW Posted December 14, 2015 Author Share Posted December 14, 2015 Thank you guys, I'll give it a clean and report back 😬😀 Quote Link to comment Share on other sites More sharing options...
SteveW Posted February 9, 2016 Author Share Posted February 9, 2016 Sorry for the very very late reply to this. Sadly my partners dad died over Christmas so I didn't get chance to clean the MAF until recently. Just cleaning the MAF hasn't made a difference so now I'll reset the throttle as suggested. The earths, vac leaks etc are all ok. Quote Link to comment Share on other sites More sharing options...
Gudzy Posted February 10, 2016 Share Posted February 10, 2016 Sorry to hear your news. Try cleaning the throttle body, I had a similar issue ages ago and I had the throttle body cleaned after reading about others with the same issue (seems to be more common in the US). You'll likely have to perform a throttle position relearn after the cleaning too. Quote Link to comment Share on other sites More sharing options...
SteveW Posted February 11, 2016 Author Share Posted February 11, 2016 Sorry to hear your news. Try cleaning the throttle body, I had a similar issue ages ago and I had the throttle body cleaned after reading about others with the same issue (seems to be more common in the US). You'll likely have to perform a throttle position relearn after the cleaning too. Thanks mate. One question an ecu reset won't wipe the Uprev will it? I assume the Uprev changes the base map and is then hard coded onto the ECU? Thanks Quote Link to comment Share on other sites More sharing options...
Gudzy Posted February 11, 2016 Share Posted February 11, 2016 An ecu reset is different to the throttle position relearn but neither will wipe an uprev as far as I understand. Quote Link to comment Share on other sites More sharing options...
SteveW Posted February 11, 2016 Author Share Posted February 11, 2016 That's what I thought too. I'll try the ECU reset first then if still an issue TB clean and relearn. Cheers Quote Link to comment Share on other sites More sharing options...
SteveW Posted February 12, 2016 Author Share Posted February 12, 2016 Added a video to the first post! Quote Link to comment Share on other sites More sharing options...
SteveW Posted February 25, 2016 Author Share Posted February 25, 2016 Eventually got round to resetting the ECU. No fault codes when checked always good news! Sadly despite the MAF clean and the ECU reset the problem persists.. Onto the next option. Quote Link to comment Share on other sites More sharing options...
Gudzy Posted February 25, 2016 Share Posted February 25, 2016 Have you cleaned the throttle body yet? The video matched exactly what mine did until it was cleaned, no issues since. Mine was most noticeable when it was still slightly warm, like after filling up at the local petrol station. Quote Link to comment Share on other sites More sharing options...
SteveW Posted February 26, 2016 Author Share Posted February 26, 2016 Not yet mate, it's next on my list. I'm doing a house up and find time for anything at the moment is hard. Quote Link to comment Share on other sites More sharing options...
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