High idle with 99+ manifold
10-08-2012, 10:13 PM
#16
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Year: 89XJ,98ZJ,72K10, 06 Tundra..
Model: Cherokee
Engine: 4.0
I would clean the TB very well, (take it off to do a good job) clean the IAC, (be careful they are fragile), and if that does not work....swap with a known good TPS.
10-09-2012, 01:02 AM
#17
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Year: 1991
Model: Cherokee
Engine: 4.0 I-6 H.O.
10-09-2012, 01:04 AM
#18
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Year: 1991
Model: Cherokee
Engine: 4.0 I-6 H.O.
The throttle body is clean, the IAC should be clean as well, I cleaned them fairly well when they were removed from the previous manifold; maybe I cleaned them too much, to where it messed the IAC up a bit?
Mostly just throttle body cleaner and a toothbrush though.
10-09-2012, 03:20 PM
#19
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Year: 1993
Model: Cherokee
Engine: 4.0 ho 99 intake ps pump 1" tb spacer 62mm bored tb eletric fans and more
theres a allen headed screw on the base of the throttle body that may need backed off to let the throttle blade seal correctly
10-09-2012, 07:02 PM
#20
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Year: 1991
Model: Cherokee
Engine: 4.0 I-6 H.O.
Originally Posted by stang65
theres a allen headed screw on the base of the throttle body that may need backed off to let the throttle blade seal correctly
And how do u mean "backed off" like loosened a bit?
10-09-2012, 07:13 PM
#21
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Year: 1993
Model: Cherokee
Engine: 4.0 ho 99 intake ps pump 1" tb spacer 62mm bored tb eletric fans and more
it should be on the out side of the throttle boddy where the throttle linkage hooks up. basically what the linkage comes to rest on.
10-14-2012, 03:29 PM
#22
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Year: 1991
Model: Cherokee
Engine: 4.0 I-6 H.O.
Well yeah, messed with all that, no changes...except it shifts a bit better (by a pinch) unseated and reseated both the TPS and IAC. I'm not sure what else now, unless the IAC is bad.
Last edited by Erik Hoeffner; 10-15-2012 at 01:02 PM.
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