spence3030

i posted before about a problem, and looked at what advice was given and i'm still stuck. so im hoping there is a cherokee guru that can help me

i replace the exhaust manifold on the 1999 cherokee sport, automatic, inline 6 4.0.

now when i start the car the rpms shoot to the redline, almost as if something was slamming the pedal to the floor. i checked the throttle line and no binding, i look at all the vacuum lines and all are connected. i pulled the tube to the throttle body and the opening is working correctly.

im at a loss, i know its something that happened when i replaced it, b/c it was doing this before.

any thoughts would be extremely helpful and appreciated.

builtnotbought89'

Does the 99 HO motor have a TPS??? If so clean it & or replace it!

spence3030

no sure what you mean by "tps"

builtnotbought89'

Throttle position sensor (TPS) I know the older renix model throttle bodies have them but not sure about ur HO motor! Do u have a haynes book on it???

NewJerseyXJ609

my 95 HO motor has a TPS and it went bad.. i would definetly take it off and clean it out.. they are pretty cheap and painless to replace btw

builtnotbought89'

Ya so take ur tps off & just bring it to auto zoo!

builtnotbought89'

It should be on the front of the throttle body there will be 2 sensors & it will be the 1 on the drivers side! At least that's how the renix models are?