jaxx Posted August 22, 2014 Share Posted August 22, 2014 Hi Hope you guys can advise me here: I’ve opted for the short story…. Had my spark plugs changed, took the 2 throttle bodies off and discovered they were backed in carbon deposits and all sorts of gunk so cleaned them. Since then the car has idled rough (revs jumping between 1500 and 2000) and running rough for example trying to hold at say 35 it gets a little jumpy. After investigating further and checking out the throttle bodies I now can see that the butterfly doesn’t fully shut and therefore doesn’t create a seal! So, has anyone ran in to this problem? 2 new TB’s from Nissan £1400 EACH!!! No thanks!!! Quote Link to comment Share on other sites More sharing options...
Martinjj Posted August 22, 2014 Share Posted August 22, 2014 (edited) Did you disconnect battery before removing the throttle bodies?... Did you move the butterfly valve inside the throttle body when cleaning them? http://www.350z-uk.com/topic/86610-high-erratic-idle-2007-coupe-70k-mileage/page__fromsearch__1 Edited August 22, 2014 by Martinjj Quote Link to comment Share on other sites More sharing options...
jaxx Posted August 22, 2014 Author Share Posted August 22, 2014 Hi thanks for the reply ive just read it all! can I ask how long this process took? and a rough ££££ Quote Link to comment Share on other sites More sharing options...
Martinjj Posted August 22, 2014 Share Posted August 22, 2014 From sending the ECU away to getting the car back from the dealer it was around 2 weeks give or take a day. I'm unsure of cost as it was covered by the warranty. Car runs like a missile now, faultless, contact Mark at abbey motorsports as he is the fellow that my dealer used to fix mine. Quote Link to comment Share on other sites More sharing options...
Martinjj Posted August 22, 2014 Share Posted August 22, 2014 From sending the ECU away to getting the car back from the dealer it was around 2 weeks give or take a day. I'm unsure of cost as it was covered by the warranty. Car runs like a missile now, faultless, contact Mark at abbey motorsports as he is the fellow that my dealer used to fix mine. Quote Link to comment Share on other sites More sharing options...
jaxx Posted August 22, 2014 Author Share Posted August 22, 2014 ok mate thanks for the info Quote Link to comment Share on other sites More sharing options...
Paddy78 Posted August 22, 2014 Share Posted August 22, 2014 (edited) Sounds like you just need to do the ecu reset and throttle body position reset. These can be done by the "pedal dance". Happened to me when I cleaned mine. Was absolutely fine after the reset. http://www.350z-uk.com/topic/53148-how-to-ecu-accelerator-pedal-throttle-valve-resets/ Edited August 22, 2014 by Paddy78 Quote Link to comment Share on other sites More sharing options...
nievelc Posted August 22, 2014 Share Posted August 22, 2014 I second paddy, best to try that first (it's free and takes about 5 mins to complete) If no joy Abbey are awesome Quote Link to comment Share on other sites More sharing options...
Martinjj Posted August 22, 2014 Share Posted August 22, 2014 (edited) No harm in trying a pedal dance but the chances of reset/relearn curing it are virtually nil, (so is Nissan hooking up to consult and resetting).. trust me, been there, seen it and done it, this problem is a pig to cure on HR models... plenty of info out there on Google for this problem with HR Zeds including using new throttle bodies which is more miss than hit, Edited August 22, 2014 by Martinjj Quote Link to comment Share on other sites More sharing options...
jaxx Posted August 23, 2014 Author Share Posted August 23, 2014 Thanks guys we have tried all the resests with no joy. Still looking into it!! Quote Link to comment Share on other sites More sharing options...
richmillions Posted August 23, 2014 Share Posted August 23, 2014 When my throttle bodies were cleaned they wouldn't reset, I had similar symptoms to yours. I got Sly at Kaizer motors to do the relearn procedure but even with the correct software it took a few hours to correctly relearn. Quote Link to comment Share on other sites More sharing options...
jaxx Posted August 30, 2014 Author Share Posted August 30, 2014 problem solved!! No need to perform an ECU 'reflash' or expensive nissan repair bills. When the TB's were clearned it basically left a very tiny gap between the TB and the butterfly. As carbon deposits and other muck had built up slowly over time the buterflys learned to deal with it, so moving this 'muck' was (unknowingly to me at the time) a bad idea. It basically kept idiling between 1500 and 2000 constantly reving. After many ideas and some time with diagnostic machines.....a light coat of paint inside the TB sorted this out. simple, effective and......simple 1 Quote Link to comment Share on other sites More sharing options...
Tricky-Ricky Posted August 30, 2014 Share Posted August 30, 2014 (edited) Painting the inside of the TB... Might just as well left the carbon, i have heard of some bodges but that definitely up there with them. Edited August 30, 2014 by Tricky-Ricky 1 Quote Link to comment Share on other sites More sharing options...
Jp606 Posted August 30, 2014 Share Posted August 30, 2014 Wtf!! Quote Link to comment Share on other sites More sharing options...
GMballistic Posted August 30, 2014 Share Posted August 30, 2014 Painting the inside of the TB... Might just as well left the carbon, i have heard of some bodges but that definitely up there with them. Quote Link to comment Share on other sites More sharing options...
a2orry Posted August 31, 2014 Share Posted August 31, 2014 For sale lovely 350z light mods including colour coded throttle bodies inside and out. Quote Link to comment Share on other sites More sharing options...
Toon Chris Posted August 31, 2014 Share Posted August 31, 2014 Wow. I mean, Wow. Quote Link to comment Share on other sites More sharing options...
glrnet Posted August 31, 2014 Share Posted August 31, 2014 What colour did you use? Quote Link to comment Share on other sites More sharing options...
Vlad Posted August 31, 2014 Share Posted August 31, 2014 What's the reg of the car? I will add it to my "do not buy" list lol Quote Link to comment Share on other sites More sharing options...
Ricey Posted August 31, 2014 Share Posted August 31, 2014 I sell used cars and even I'm horrified at that one! ***adds to list of fixes for the future*** 2 Quote Link to comment Share on other sites More sharing options...
Tricky-Ricky Posted August 31, 2014 Share Posted August 31, 2014 Definitely from the Homer Simpson school of bodgeing... Maybe we should have a bodge of the year section.....i nominate this one Quote Link to comment Share on other sites More sharing options...
ZMANALEX Posted August 31, 2014 Share Posted August 31, 2014 Got to be a wind up, surely. 1 Quote Link to comment Share on other sites More sharing options...
Tricky-Ricky Posted August 31, 2014 Share Posted August 31, 2014 Got to be a wind up, surely. Well i did wonder when i read this line....."After many ideas and some time with diagnostic machines....." But its good for a laugh anyway. Quote Link to comment Share on other sites More sharing options...
Martinjj Posted August 31, 2014 Share Posted August 31, 2014 I admire your "out of the box" thinking.... But I am inclined to say if there was a bodge of the month award this would surely take some beating.. Haha Quote Link to comment Share on other sites More sharing options...
ChrisB Posted August 31, 2014 Share Posted August 31, 2014 Wind up or Quote Link to comment Share on other sites More sharing options...
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