Streetracer911

Hey guys I just finished cleaning my IAC and adjusting my TPS. There is still a problem when the clutch is depressed and let off the gas the rpms stay up for a few seconds before they drop. Normally in any other car I have been in, when you let off the gas the rpms come down immediately. So if someone could tell me what I could do that would be greatly appreciated. I could only get the tps to 0.97 but I don't think that is an issue. Thanks

frdmstng1986GT

vaccum leak. start lookin.

Streetracer911

any idea where?

frdmstng1986GT

no idea. just get some carb cleaner or starting fluid and spray down youre vacum lines and any intkae gasket areas.. upper to lower.. lower intake.. all vacum lines. be careful if you use starting fluid.. highly flamable but easier to tell. you have to do this with the car running.

90Lxstanger

Hmmm.........i have the same problem, ive dont the carb cleaner tho, but maybe not good enough..... but ive got bigger issued then that now

Streetracer911

well my TPS was way off and my IAC was pretty dirty so ill have to check vacume lines...supposonally propane works the best

frdmstng1986GT

propane does work.. but you better hope to god that you dont have any arching plug wires or anything like that or you will blow yourself up. i just use carb cleaner.. little messier but it always worked for me.. same thing with starting fluid.

PRO50SC

OK, just b/c you cleaned the iac doesn't mean it's functioning properly. Something to keep in mind. How long does the idle hang? If it's a very short time, second or 2, it's normal. The ecm has to have time to react and adjust the iac.

Streetracer911

yea but when you let your foot off the gas the rpms should go down once you take your foot off the gas, not couple seconds. its actually pretty annoying. Oh and idle will stay on. It doesn't stall or anything..just the acclerator thing is what I am trying to fix

AlabamaCobra

have you already cleaned the butterfly and sprayed it with white lithium grease? as for vacuum lines samseed posted a diagram other day , start with the tree on the drivers side firewall