air leak ?

evilneon02 · Post by **evilneon02** » Fri Jul 03, 2009 12:48 pm

ok i have an 02 sxt and just cleaned my tb with simple green about 1 mo ago. everything was fine untill 3 days ago when my car started to idle high and when i push the clutch in it goes up to 2,000 rpm while rolling down the road. i have checked all the hose clamps, one was loose so i replaced it. checked the catch can and sealed the threads on it. uninstalled the cai and reinstalled it. and checked the brake boost line as good as i can. so my question is is the any hoses im missing and where are the rest of the hose to check? thanks for the help.

evilneon02 · Post by **evilneon02** » Sun Jul 05, 2009 2:18 pm

esteinmaier · Post by **esteinmaier** » Sun Jul 05, 2009 2:26 pm

IAC stuck open will cause that problem too.

esfan · Post by **esfan** » Sun Jul 05, 2009 2:30 pm

could there be a leak point direct on the throttle body? mine always makes "psssss" sound like a turbo. and i suspect some leak on the throttle body and the hose to the intake manifold...

Nutmeg · Post by **Nutmeg** » Sun Jul 05, 2009 2:47 pm

IAC, or TPS

evilneon02 · Post by **evilneon02** » Sun Jul 05, 2009 4:10 pm

is there a way to test to find out which one it is and do they cost much.

Nutmeg · Post by **Nutmeg** » Sun Jul 05, 2009 4:53 pm

Pull codes.

evilneon02 · Post by **evilneon02** » Sun Jul 05, 2009 5:13 pm

the only code i get ia P0456 and i have had that code for 4 yr it is my fill up tube is bent from someone leaning on the nozzel while filling up.

evilneon02 · Post by **evilneon02** » Thu Jul 09, 2009 6:08 pm

well this is messed up one payment left and tight on money and this happens. now it got it idles at 1500 and pulses and while im driving if it i take my foot off the pedal and it starts to slow down and the rpms drop a couple 100 then the car starts to jurk until i hit the gas. took the cai off again and reinstalled it nothing. im just puzzled. and the only codes i got now is the evap leak at my fill up tube which i just put some grease on to stop the leak to see if the code goes away and for some odd reason a code saying my battery was diss connected which i never touched the battery and it is tight. crazy i know. well got to go read the whole service book to find out whats wrong. wise me luck. if anyone could help thanks

Post by **occasional demons** » Thu Jul 09, 2009 10:51 pm

There is also a vacuum line just below the IAC, that runs to the purge solenoid behind the battery, check all the rubber connectors on that line. It is a plastic line that snakes around where the air box used to be, and around the battery.

As Erick said the IAC may be stuck. The simple green might have gotten in there, and corroded the plunger/seat. I would romove the two screws and give it a look.

Like I suggested in another thread, remove the IAC, and put some heavy shipping tape over the holes and bolt it back on. If the car idles/or stalls, you know it is the IAC. This basically blocks the air bypass, so the IAC is "eliminated" from the circuit. Just don't try to to some heavy down shifting, or the vacuum may pull the tape through. Like I said heavy shipping tape.

evilneon02 · Post by **evilneon02** » Fri Jul 10, 2009 5:44 pm

do you think some layers of shrink wrap work. and would i put it on the iac side or the tb side?

Edit:
ok never mind that message i found some tape and i put two layers on the iac and started it at first it dropped to 500 rpms and slowly stratred to climb to 600 then 700. so this means it the iac that is bad right?

esfan · Post by **esfan** » Fri Jul 10, 2009 6:26 pm

600 is normal. i think before is the problem.

evilneon02 · Post by **evilneon02** » Fri Jul 10, 2009 7:35 pm

i stould just leave the tape on and forget about the iac. lol just ordered one. autozone $71 and advance $159. hmmm which one to pick. lol im just glad to find out what the problem was. gas milage 1/2 tank in a day just to work home and part store.

Post by **occasional demons** » Fri Jul 10, 2009 10:52 pm

Glad my hairbrained idea worked!

ZeroChad · Post by **ZeroChad** » Fri Jul 10, 2009 11:02 pm

Too bad that guy on ebay doesn't sell them anymore.