High idle...

[dmatt5656]

Okay so I'm idling around 1200 rpms. I've replaced my tps cps map sensors. I readjusted the tps today and I'm still idling high. I can't find any vacuum leaks with my starter fluid and I've gone through and done the first 5 steps on cruiser 54's website. I am no expert. This has been an on going issue and quite frankly I'm at my wit's end.

 

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[dmatt5656]

Sorry it's a 1990 4.0 manual

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[dmatt5656]

Okay so...a little update found a couple of intake blots loose so I tightened those up. Now it is idling low.

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[cruiser54]

Not uncommon.

 

At the dealership, we would check the intake bolts at the 30,000 mile service and generally find a few of them loose.