2000 GMC Jimmy "misfiring" Questions

misfiring cylinder i have a 98 gmc jimmy 4.3L. i change plugs and wires and it is still misfiring.the comp gave me codeP0303.what does that mean?could it b an o2 sensor or a valve?if so how can i test

2000 gmc Jimmy misfiring runs good up to about 3000 RPM then starts to misfire put new cap, roter, plugs but still does it also when the motor get warm it starts to misfire around 2000 to 2500 RPMs ...

2003 gmc jimmy on hills loses power check engine blinks then stalls upon restart performs great runs well on flats and even not steep hills . Loss of power on hills when engine light blink it is only ...

2000 gmc jimmy 4.3L misfire on cyl 4 and cyl 5 at idle when increase rpm cyl 4 cleans up but cyl 6 starts to misfire as seen on snapon scaner plugs wires cap rotor were replaced found dist gear worn ...

2005 Jimmy 4X4, 4.3L, P300 multiple misfire. Have had on scanner, misfires Cylinders 1 and 4. Have changed: both spark plugs and wires, coil and coil lead, distributor cap and fuel filter. Engine does

my jimmy is having issues the rpms **** up when i jump on highway and then the check engine light will kick on, the mechanic puts it on the computer and all he tells me is it was a misfire! but he ...

...sensor they are called p0306 is a number 6 misfire code not a rich code. find out why number 6 is misfiring. The error code P0306 is for a misfire in #6 cylinder. The possible causes are, Faulty ...

rough idle, scanner says multi cylinder misfire and vac at ign fail The Misfire is your Rough Idle check Coil Pecks & Spark Plug Wires

code p0303 misfiring of number 3 cylinder HAVE YOU TRIED CHANGING YOUR SPARK PLUGS. WHEN PLUGS GO BAD THE BEGIN TO MISFIRE.

misfire in number 4 cylinder in 1998 jimmy misfire in number 4 cylinder in 1998 replaced lifters and sparkplugs replace the cap and rotor button, if that doesn't fix it then you need to replace the ...