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Weird 3.9 intermittent rough running

757 Views 3 Replies 3 Participants Last post by  MarvinMod
I have a 2002 Dakota SXT 2WD the 3.9. It has ~220,000 miles.

The problem I'm having is kind of hard to explain but I'll try my best. Sometimes when I start it up it will start running rough and will barely take throttle. When I start driving it acts as if it's starved for fuel but if I turn it off and back on it runs perfect. Also there is NO check engine light. This happens after every 3rd or 4th key cycle.

Does anyone have any ideas as to what it could be
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Maybe it sounds sort of like your TPS is going bad? (Even though there is no CEL.)

im having this exact problem as well, ive replaced fuel pump, spark plugs, coil, IAC, Crank sensor, map sensor, TP sensor, distributor, cleaned injectors and throttle body.
check your plugs for carbon fouling or carbon build up, check exhaust for carbon build up as im having that issue as well.
im thinking computer related or fuel sync.
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