Problems with my TC

[-VenoomTC-]

Hi everyone. I have a scion tc with the turbonetics kit and ACT performance clutch. For some reason latetly i have been having problems with my car. It seems like the rpm's are acting up..sometimes the car raises them on it's own and also once in a while it shuts down the rpm's when i drive not letting me accelerate. Annyone had similiar problem? It has to do something with the throttle position sensor because the check engine light turns on as well, but it turns off at time too. Is it possible that i need to tune the Unichip? I did not have the problem before i got the clutch though.

[ForBiddeN]

check for a boostleak. and fix the sensor.

[-VenoomTC-]

How do you check for the boost leak? because actually i think this is what it might be.

[JustCin]

get a spray bottle with like a drop of mild dish soap... add water... shake a bit... turn car on... spray all pipe joints and look for bubbles...

at idle you may not have bubbles though, a buddy of mine took some PvC pipes and some brass fittings(for air hose from compressor) and made an "adapter' to add pressure to the system by removing the piping from the turbo and inserting the "adapter" into the open piping and turning on his air compressor

There's probably other ways to do it too but this is the only way I've ever seen it done.

[3637Matthew]

Hey man I had an Acura Cl-S That did the same kind of the the rpms were jumping around and actually my car took off a few times I brought it to my mechainc and he sprayed some lube on the throttle cable it was just a little sticky. It doesnt sound exatly the same and I know its a diff car and its turboed but maybe try it. Cant hurt.

[ForBiddeN]

Originally Posted by JustCin

get a spray bottle with like a drop of mild dish soap... add water... shake a bit... turn car on... spray all pipe joints and look for bubbles...

at idle you may not have bubbles though, a buddy of mine took some PvC pipes and some brass fittings(for air hose from compressor) and made an "adapter' to add pressure to the system by removing the piping from the turbo and inserting the "adapter" into the open piping and turning on his air compressor

There's probably other ways to do it too but this is the only way I've ever seen it done.

about the only way to do it.