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05-07-2011, 01:02 AM
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Registered User
Join Date: Dec 2009
Location: edmonton ab
Posts: 73
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2000 4.3 problem
I have a 2000 gmc 1/2 ton with a 4.3l auto. When motor is cold it surges at part throttle (about 35mph), once it warms up it is hardly noticable. Any ideas? I cleaned the maf sensor, changed plugs cap and rotor, fuel pump. Code comes up as random misfire. Runs good at idle and wide open throttle. Thanx for the help
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