Tps?
12-14-2012, 05:48 PM
#1
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Location: Stanwood WA
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Year: 1990
Model: Cherokee
Engine: 4.0
Tps?
When I kill my rig or nearly kill it it idles up to 2400 for a min or two and then slowly idles down. I've been told this may be a TPS issue? Opinions!?
12-14-2012, 08:12 PM
#3
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Year: 1987
Model: Cherokee
Engine: 4.0 liter RENIX I-6, DIY Cold Air Intake, 2.5 FM Exhaust, 3 Core Radiator
Sounds like a TPS (throttle Position Sensor) or IAC (Idle Air Control) issue. Both componants are located on the the front side of your throttle body on your 1990 RENIX 4.0 motor. The IAC plunger is the componant closest to the motor. Remove the 2 retaining screws and pull it out of its bore in the throttle body. Take a toothbrush and carbuerator cleaner and scrub the IAC and its bore. Re-intall it and see how she idles. If it's all good, great!! If the idle is still all jacked up, then most likely your TPS is junk.
12-16-2012, 12:31 AM
#4
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Location: everett, wa
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Year: 2001
Model: Cherokee
Engine: str8 6
X2 on that.... Clean carb or throttle body. I noticed more power and response plus a smoother idle after pulling of my TB and cleaning it all up new&shiney
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