In need of some tech advice
03-01-2007, 05:51 PM
#1
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In need of some tech advice Last friday I put in a post seeing if anyone had an extra coil pack laying around b/c #5 coil went out on me. Well I replaced it with one from GM and my SES light is still on and the car is still missing. HP Tuners says its code P0300-Engine misfire. I checked ALL of the plugs to make sure they're plugged in and all the other coils are firing. What else could be causing it to miss? Oh I've also recently replaced the TPS sensor.
thanks
Nick
thanks
Nick
03-01-2007, 07:41 PM
#3
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Try spraying a little water on the plug wires with a squirt bottle while the engine is running. If the engine stumbles you have a plug wire with faulty insulation or maybe a cracked ignition coil. If there is a wire or a coil arcing out the water will make it worse and you will probably be able to see some sparking.