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Old 09-02-2014
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I am: Bryar Dooley
Join Date: Sep 2014
Location: Bedford, VA
Vehicle: 1988 ford RANGER XLT
Drive Type: 4x2
Engine: 2.3
Posts: 1
Total Props: 0
Icon4 fuctuating rpms

I have a 1988 2.3 5 speed the rpms are fluctuating between 200 an 2200. its started this on Friday but it ran fine Saturday an Sunday an then it did it again Monday. it also its puffing a lot of black smoke when this is happening an wILL cut off sometimes an does not want to start back if I let it sit for thirty minutes to an hour it will start back but it will either be ok or go back to the rpms fluctuating. HELP PLEASE I DONT KNOW WHAT IT IS!!!
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Old 09-02-2014
pearlkid9988's Avatar
I am: Chris Clayton
Join Date: Dec 2008
Location: Newnan Georgia
Vehicle: 2003 Ford Ranger STX blend
Drive Type: 4x2
Engine: 3.0
Posts: 828
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Idle air control valve probably stuck and can't regulate idle. Pull it off and clean it the stick it back on and see what happens.
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Old 09-02-2014
I am: john lanciloti
Join Date: Aug 2014
Location: jackson,tn.
Vehicle: 2000 ford ranger
Drive Type: 4x2
Engine: 2.5
Posts: 8
Total Props: 0
its a vacuum leak. the black smoke is from the excess fuel the rpm fluctuation just comes with the territory of those two problems.
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