Quote:
|
Originally Posted by gmc
About 2 months ago my check engine light came on and the vehicle was running real slugglish. It also misfired. I took it to a mechanic, not my normal one, and they told me that I needed new plugs and a new coil pack #5/2. They said the wires were good. Yesterday the light came on again, but went off later in the day and it hasn't come on since. I took it to Autozone to find the code and it read P0300 multiple misfires. What do you think is the problem? It's been running fine so far, but I'm worried that the problem might come back.
The mechanic that did the original repair told me that he warned me that since I wanted AC Delco plats plugs put in the car that it might misfire. He wanted to put in champion plat plugs, but I told him I wanted AC Delcos. I think this is the biggest bull I ever heard! You're telling me that since I went with stock plugs that this is the problem? Think of the millions of GM cars that have AC plugs in them.
|
P0300 is a misfire code. Could be 1 cylinder or multible cylinders misfiring.
I would check the plug wires for signs of micro-arcing...this is a blackish powdery substance on the affected plug,wire or coil tower.
if your mechanic replaced the plugs and coil without replacing the affected plug wire than most likely the problem has returned.
Definately some diagnosis needs to be done before anymore parts are replaced.
As far a AC/Delco plugs go...I use nothing else..only the best for my customers