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-   -   TPS didn't cure my over rev blues (http://www.wranglerforum.com/f282/tps-didnt-cure-my-over-rev-blues-150226.html)

Ratfink2u 03-31-2012 09:20 AM

TPS didn't cure my over rev blues
 
My 2000 TJ 4.0 is over revving but only occiasionaly. Sometime in park,sometimes in gear which is kinda un-nerving to say the least. I replaced the TPS upon Jeep Forum rec's but it didn't do it.
I would appreciate any thought? Fuel filters are my last option I guess.....help:banghead:

VoodooShot 03-31-2012 09:23 AM

Faulty new tps ? It happens

Kevbz 03-31-2012 11:58 AM

is it at idle only? assuming you have an auto (park and in gear comment). Try looking around the idle air controller, or IAC. It is part of the throttle body, intake area of the engine.

usually a dirty or clogged IAC will be diagnosed with a low dropping idle, but at idle the IAC controls all the air/fuel to keep the engine running, so it might cause a run up on idle also. once running the TPS takes over to manage the air/fuel.

burton160w 03-31-2012 12:05 PM

And assuming you have a manual, check to make sure one of your vacuum plugs isn't missing. Open up the hood and look down at the engine from the drivers side. There should be three or four plugs on the side of the engine, two or three will have vacuum lines coming off of them. If you have a manual, one should be plugged up. A lot of times those fall off and cause some wonky symptoms with your idle.

Ratfink2u 03-31-2012 03:45 PM

I'll give it a shot, thanks. IT does it in gear when accelerating and at idle as well.

Ratfink2u 03-31-2012 03:48 PM

Quote:

Originally Posted by burton160w (Post 2203646)
And assuming you have a manual, check to make sure one of your vacuum plugs isn't missing. Open up the hood and look down at the engine from the drivers side. There should be three or four plugs on the side of the engine, two or three will have vacuum lines coming off of them. If you have a manual, one should be plugged up. A lot of times those fall off and cause some wonky symptoms with your idle.

Thanks...it's an automatic and all the lines are in place or capped. Same thing I thought too. Good thinking though cuz it kinda acts like a vaccum leak.:thumb:

Ratfink2u 03-31-2012 03:49 PM

Quote:

Originally Posted by Kevbz (Post 2203627)
is it at idle only? assuming you have an auto (park and in gear comment). Try looking around the idle air controller, or IAC. It is part of the throttle body, intake area of the engine.

usually a dirty or clogged IAC will be diagnosed with a low dropping idle, but at idle the IAC controls all the air/fuel to keep the engine running, so it might cause a run up on idle also. once running the TPS takes over to manage the air/fuel.

Great idea! I'll go check that out . Thanks much:dance:

Ratfink2u 04-02-2012 01:34 PM

Quote:

Originally Posted by Kevbz (Post 2203627)
is it at idle only? assuming you have an auto (park and in gear comment). Try looking around the idle air controller, or IAC. It is part of the throttle body, intake area of the engine.

usually a dirty or clogged IAC will be diagnosed with a low dropping idle, but at idle the IAC controls all the air/fuel to keep the engine running, so it might cause a run up on idle also. once running the TPS takes over to manage the air/fuel.

It was slightly dirty so it's cleaned and I reset the battery/computer for 24 hrs. now it's a wait and see. Thanks for all your help!:whistling:

Ratfink2u 05-07-2012 04:59 PM

It was mice that ate the wiring loom to the IAC and screwed up the TPS too. fixed
Thanks all


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