i unplugged the tps and my car ran like shiiat...


my car is doing the same thing... but its all the time. checked the compression.... its good. im confused as to what it is

 

Totally forgot.



PowerOverFC - after unplugging the TPS, did you set the idle using the jumper, or just try to drive it the way it was? I should mention that I changed the adjustment thing at the boost sensor (the sensor behind the airbox - ask if you're uncertain and I'll post a pic of it) as well as the air adjust screw on top of the plenum to bring the idle to where I wanted it (a smidge over 750.)

 

are you talking about the A/F adjustment screw next to the boost sensor, or the boost sensor its self... **** that reminds me the A/F screw is ......screwed (hah, seriously its broken) maybe thats why im shooting at 3 foot long fireballs *scratches head*

ill play witht that, didnt do the jumper... it sounded pretty cool :P full throttle it would rev to 2-3k maybe then go down.. since the throttle plate was open all the way i could hear the motor through my filter.. ahh **** im mumbling again... maybe i can fix the car today..

 

Yup.


Sounds like you should fix that first, and then go after the B-R-A-A-A-A...

 

nahh, ill just take it all out and put on the microtech..... less work, and im SURE itll work afterwards

 

Back from the dead.


I figured I should post some follow-up.


A few weeks after installing the news TPS, the throttle 'hanging' problem came back. Hanging meaning that when shifting into neutral from mid to high revs, the rpms would stop around 1000-1300 installed of falling to idle (850.) No more B-R-A-A-A-A, though.

I didn't know wtf to do about it. Some time later, I switched TBs. The problem vanished immediately. Ah-ha! says I. I also discovered (accidently) during this that I could reproduce the 'hanging throttle' and B-R-A-A-A-A-A by adjusting the lower TB plate so that it's not fully closed at idle.

Now, during this, my O2 sensor also died. And it was ugly death - both the sensor end and the top end where the wire comes out of it were smashed. Don't ask me how that happened... So I yanked it and put my old one back in. Okay, fine.

In the last 3 weeks or so the hanging throttle returned AGAIN. I haven't touched the manifolds in months, so it wasn't the result of any meddling from me. Yesterday, I put a new O2 sensor in. The idle/throttle was 100% normal for the drive home.

The point of all this, other than that FCs can be goddamn schizophrenic, is that if you are also having this problem there are some more things that you can check before shelling out for a new TPS...