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August 16th, 2009, 8:49 PM
#1
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i have a 2001 chevy tahoe 5.3 i have a PO300 code random misfire ive changed the plugs with ac-delco iridium plugs bosh wires same problem a mechanic told me its probably a coil i have 8 coils how do you know which one is bad how do i check them
August 16th, 2009, 9:07 PM
#2
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Professional Mechanic
Professional Mechanic
Can you feel the misfire? When does it do it? idle or acceleration?
Generally when a coil it bad it will set a cylinder specific code like PO301 -308 the last number being the specific cylinder.
Generally when a coil it bad it will set a cylinder specific code like PO301 -308 the last number being the specific cylinder.
