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Old 05-07-2011, 01:02 AM   #1
shocker
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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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Old 05-08-2011, 01:02 PM   #2
truckdude239
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Re: 2000 4.3 problem

Intake gaskets
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Old 05-08-2011, 04:43 PM   #3
shocker
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Re: 2000 4.3 problem

can you shed some info on why you think its the intake gasket? thanx
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Old 05-13-2011, 01:19 AM   #4
66redw/white
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Re: 2000 4.3 problem

id say maybe try your coil
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