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Hi Guys, very helpful site.
I have a 93 1500, 4.3L 5spd. I parked it for the winter and last week went to start it, it started fine but will not fully idle down and is not running as smooth as it use to. I have changed the plugs, wires, cap rotor, still idles hi.

Any ideas before I start replacing parts.

DH
 

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my 96 does this once in awhile. i havent found a cause for it. i think it has something to do with the throttle position sencer.
 
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