1. Home
  2. Chevrolet Trucks
  3. Trouble code P0304 diagnose

Trouble code P0304 diagnose

I have a Trouble Code P0304 "Cylinder 4 Misfire Detected" on my 1998 S-10 Pickup, 2.2L. The motor will idle real rough and has little power. This problem is intermittent and I cannot seem to determine what the cause is. I have replaced both coil packs and spark plugs, but it keeps coming back periodically. Could this be caused just by a bad plug wire? Fuel injector? I'm hoping it's not the ignition module. That thing is $200. Any helpful hints would be greatly appreciated. Terry

Reply to
Terry Neer
Loading thread data ...

Greetings,

From what I've seen in the past, a bad plug wire could be your culprit. Plus it should be relatively cheap and easy to replace.

Cheers - Jonathan

Reply to
Jonathan

Jonathan, Thanks for the reply. I agree with you. I'm going the plug wire route first. I had thought I may have changed the plug wires in the past, but my records show that I only changed plugs. We'll see if that gets it. Thanks. Terry

Reply to
Terry Neer

This might help:

formatting link
Steve

Reply to
Steve Mackie

MotorsForum website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.