So I've had this stalling problem that I'm sure your all tired of seeing, as I make a new thread about my progress every month or so. Well I replaced the MAF on a whim. Today before I replaced it, the car would run like $hit, sputtering and dieing and overall crappy. Until it would idle @ 1,900rpm's. Then it would at least run reliably.

I replaced the MAF, it turned over ok, idled @ 600, but when I started driving it would start idling @ 1,500rpm's until I turned it off. It seems when I start driving it just sets the idle real high. Any reason why?

 

I am having a little trouble understanding your situation,, it initially will idle at 600,, then will not return to that idle speed after its driven? before and after the MAF change?

 

Correct, Before the MAF change it was 1900, now its 1600. It won't return to a regular 600ish idle until I turn the car off and on again. Once I start driving it idle's real high, almost as if its compensating for something

 

Hmm, I believe you can set your idle through the IACV. Also, did you clean your throttle body recently? Because I heard similar situations after some people clean their tb.

 

I've been dealing with a high idle problem myself. Another member on here replaced my stock air intake with a cone type air intake and also installed a new TPS and it didn't stop it 100%. I've noticed that when its cold outside, its more than likely to happen than on a day when its 80+ degrees. My RPM's will go up to 2000 to 3000. I turn it off and it comes down to 500. Not sure what causes it, but good luck at figuring out yours.

 

How is your coolant level? Could possibly be the coolant temp sensor

 

TPS: Checked, Replaced, and Recalibrated.
ECTS: Replaced, and in good working order.
Intake: CAI, Filter replaced, tubing re-inspected & tightened.
PCV Valve: Replaced.
Spark Plugs: Cheked and Replaced.
Fuel Injectors: Resistance checked, Firing checked, leaks checked.
Fuel Filter: Replaced.
Fuel Injector Cleaner: Two bottles of Techron have been run through.
Exhaust: Found a hole in the B-Pipe/Muffler connection, getting replaced by maximariceboi's shop next week or so.
TB: Cleaned (twice), found a torn gasket I need to fix, its just rippe around two of the four 12mm bolts.
IACV: Cleaned, metal gasket is in good shape.
MAF: Replaced.


I don't believe I need to reset the base idle because it initially idles correctly, meaning some other variable causes the car to maintain a higher idle while in use. I drove it earlier and it was better, it would idle in the high hundreds, low thousands, but the more I used it, it went back to about 1,500. I've only driven about 10-15 miles on the new MAF. I'm going to give it another 45-50 miles, because I hear it takes the ECU ~60 miles to adjust itself accordingly.

If anybody can think of anything else to check, please let me know, because if this doesn't work, I'm taking it to a shop, leaving it with them and giving up. I've done everything short of yank my injectors and send them off to deatchwerks

 

you haven't checked for a vacuum leak, spray extra strength starting fluid around possible trouble spots.

 

Extra strength starting fluid?

Where would I go about spraying this?

Only reason I haven't checked for a leak of sorts is because the problem is intermittent, like the problem wasn't bad today or existent after the MAF swap, but i could have just had a lucky night and it might run horrible tomorrow. I figured with a leak it would be a constant thing. I could be very wrong

 

The metal gasket needs to be replaced with a new one, not reinstalled with an old one. Did you do this ?

 

^ I'm sorry, I just have to ask... what's up with your exhaust? Is that like a 2" tip you're running there?

 

i never really measured it. it replaced the rusty OEM one when as i was buying the car.

you think i should get an aftermarket exhaust ? the whole exhaust is stock. and i dont want it to sound loud, just stronger than stock, not loud like a honda civic.

i dont know much about exhaust, what should i do ?

EDIT: yeah its a 2" tip, the stock size is 2.25" is it not? i guess i am restricting flow

 

There's two screws on the TB. Try loosening up to see if it lowers the idle.

 

Which two?

I used the old metal gasket, made it nice and tight, shouldn't be leaking from there. but I'll get around to replacing the TB/IACV gaskets soon

 

Pleas don't adjust those screws on the TB........ The only one you should ever attempt to use to adjust the idle is the big black plastic one on the iacv. Also, if you have an ohm meter it's fairly easy to check that the tps is properly adjusted.

 

I won't, my idle is fine, the base idle and voltage that is. It just sometimes idles high after being run, and I can't figure out why

 

Check your throttle placement.

 

problems been fixed, faulty MAF was the problem

 

I love it when people post follow ups, that makes my day man!

Out of curiousity, did you do any diagnoses with an obdII scanner and checking data or did you just replace or swap it on a whim?

 

you got it, the latter. I was completely stumped and it was that or I was about to start replacing fuel lines and injectors. So on a whim I bought a $50 MAF from fanaticrockford and voila. Now have a high idle again, but its because my wheel well liner where my CAI sits behind has ripped out from driving too fast. (wind bent it down, caught the road slipped under the tire and ripped out). I've been driving like that and the Air Filter is filthy so that and obvious one.

 

EXACT same thing happened to me. you think that causes a high idle? im still looking for the splashguards at junkyards..hard to find.

 

$tealership: $60, 2 weeks to ship it. Wasn't fun, and a dirty air filter will cause a high idle

 

60 aint too bad..i still would rather not spend it though lol.
yeah mine might as well just be replaced now..its a monster flow foam one but...its a couple years old.

 

on a non related subject DAMN!!!! what are my girlfriends doing as your avatar?!?!???!?

 

Now that I have that wheel well cover on I have much more stable normal idle, btw

 

sweet mayn. i dont think mines gonna get much better, no iacv ftl

 

oo yeah that'll do it haha