pfleyva Posted September 9, 2005 Share Posted September 9, 2005 Help: My car runs great all of the time except when I turn off the A/C or the A/C cycles off. As soon as I come to an idle after turning off the A/C the car stalls, every time. It starts right back up, no problems. The RPM's drop to almost nothing, it takes a slight glup then dies. Any suggestions? Thanks! Quote Link to comment Share on other sites More sharing options...
SKperformance Posted September 9, 2005 Share Posted September 9, 2005 Sounds like something is wrong with the idle up circuit . When is the last time you havd the throttle body cleaned? Quote Link to comment Share on other sites More sharing options...
oohryry Posted September 9, 2005 Share Posted September 9, 2005 Sounds like something is wrong with the idle up circuit .When is the last time you havd the throttle body cleaned? ← Throttle body cleaning should do the trick. I have to leave my a/c on ALL THE TIME to keep from getting that check engine light associated with the throttle body code. The dealer said 1300.00 to replace the throttle body. I'm still looking for someone who can clean it for me instead. So I run the a/c because it changes the position of my throttle and keeps me from having to turn the car on and off to get control of the vehicle again. That's some a/c system we got there. Hope I can find someone soon, winter's coming. Even though I know I can just turn up the temp control to hot but the a/c button still burns more fuel with it on. Quote Link to comment Share on other sites More sharing options...
pfleyva Posted September 12, 2005 Author Share Posted September 12, 2005 Thanks for all of your help! A little more information: This has been happening since I purchased the car three years ago (98K, it now has 150K). In reviewing the service records with the dealer, this problem has continually been reported since 15K. Does it still make sense that it is the Throttle Body? If so, $1300.00 is a lot to have it replaced. Is it that hard to clean? Can I do it myself? or should I find someone willing to clean it? Thanks! Quote Link to comment Share on other sites More sharing options...
prix Posted September 17, 2005 Share Posted September 17, 2005 Hi All, Have had the same problem with my 1994 LS400, but only now and then. I'd say it's happened five or six times this year, under exactly the same scenario. We have the same year/model...hmmm. Yep, turning off the a/c causes the car to die (seems to happen if I am at idle, not with the car in motion). It's not yet a bothersome issue, but if it happens more frequently, then work will need to be done. If anyone knows how to clean the throttle body, let us know! Thanks. Quote Link to comment Share on other sites More sharing options...
prix Posted September 17, 2005 Share Posted September 17, 2005 Oops -- we have the same model LS400...(not same year)... Quote Link to comment Share on other sites More sharing options...
pfleyva Posted September 20, 2005 Author Share Posted September 20, 2005 I found some good instructions. Check them out: http://www.lextreme.com/tb.htm Good Luck! Quote Link to comment Share on other sites More sharing options...
pfleyva Posted September 20, 2005 Author Share Posted September 20, 2005 One more set of instructions. http://www.lexls.com/tutorials/EFI/throttlebody.html Quote Link to comment Share on other sites More sharing options...
Antoinette Gonzalez Posted April 4, 2012 Share Posted April 4, 2012 This happens to me too If you still come to this site did it ever work? (cleaning it?) Quote Link to comment Share on other sites More sharing options...
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