High idle, everything is in check.
01-16-2014, 01:39 AM
#1
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Year: 1989
Model: Cherokee
Engine: 4.0 RENIX
High idle, everything is in check.
89 renix, all the vaccum lines are new, new tps and iac. I still have the jeep idle around 1100rpm cold and 1500 rpm warmed up. Any ideas guys? cruiser?
01-16-2014, 03:16 AM
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Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Did you adjust the TPS? If not go to Cruisers renix tips, follow the guide good stuff.
Also check the bolts at the back of the intake, they have a habit of working loose and will also cause high idle problems.
Also check the bolts at the back of the intake, they have a habit of working loose and will also cause high idle problems.
01-16-2014, 06:48 AM
#3
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Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Has anyone ever messed with the butterfly stop screw on the throttle body?
Of my tips, which ones have you done?
01-17-2014, 12:42 AM
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Year: 1989
Model: Cherokee
Engine: 4.0 RENIX
Ive never messed with the butterfly screw because I know that's not used to adjust anything, and I cleaned the IAC and put in a new TPS. Although one torx bolt from where the intake hose goes to the throttle body is off and wont screw back in, could that be a cause? Ive also got that heat soak problem when my jeep is warm and I restart it and it misfires until I rev it up
01-17-2014, 06:08 AM
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Year: 1996
Model: Cherokee
Engine: 4.0L I6 (The best engine ever made)
Ive never messed with the butterfly screw because I know that's not used to adjust anything, and I cleaned the IAC and put in a new TPS. Although one torx bolt from where the intake hose goes to the throttle body is off and wont screw back in, could that be a cause? Ive also got that heat soak problem when my jeep is warm and I restart it and it misfires until I rev it up
IAC
Vacuum leaks
You've got a lot of checking up on stuff to do
01-17-2014, 06:21 AM
#7
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Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Ive never messed with the butterfly screw because I know that's not used to adjust anything, and I cleaned the IAC and put in a new TPS. Although one torx bolt from where the intake hose goes to the throttle body is off and wont screw back in, could that be a cause? Ive also got that heat soak problem when my jeep is warm and I restart it and it misfires until I rev it up
Did you adjust the new TPS?
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