Question about 1993 Chevrolet C1500
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Posted on Jan 02, 2017
IS IT POSSIBLE YOU GOT A WIRE CROSSED? or a plug is cracked and or gap closed up? i would check these. you have the 5.3? what kind of plugs are you running?
Posted on Dec 16, 2008
My first thought for a solution of your problem is plug wires. You have replaced some common problem areas for this situation but the plug wires are the most susceptible for causing a miss after engine is warmed up. Try replacing the spark plug wires and let me know what happens.
Posted on Apr 09, 2009
if you are getting a CKP (crankshaft position sensor) code, and during you rebuild you had removed the sensor of moved it in any way, you probably need to perform a CKP sensor relearn. check with your local shops, as they need to be set up to do this, but it is not an expensive thing.
Posted on Dec 28, 2009
Testimonial: "Thank you very much for the answer, it will be very helpful when I go to the dealership."
P300 reads as: 'random/multiple misfire' which usually means all cylinders are misfiring intermittently. Suspect a defective crankshaft/camshaft position sensor or weak fuel system pressure. If only one cylinder is misfiring (check by sliding a test light probe [make sure the ground lead is clipped to the engine securely] between each plug wire boot and it's wire at the distributor/coil block to short out that cylinder's spark. The dead cylinder will not change when it's spark is killed. Try a new spark plug first, then test that cylinder's compression if no help. You could have a bad valve. If the old plug was wet with fuel, the injector is probably doing it's job. When this cylinder runs again, that may clear up the backfire problem. Hope this helps!
Posted on Apr 04, 2010
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