rough idle
Re: random miss fire
three very common things that can cause a P0300 are:
1. cam retard - check with a scanner (spec is 0 +or- 2)
2. vacuum leak from intake (could be internal leak into crankcase)
3. fuel injector bad or dirty, fuel pressure, fuel regulator, fuel supply leak in intake (check fuel pressure 60-66psi), (do an injector cleaning service), (check for raw fuel in intake)
1. cam retard - check with a scanner (spec is 0 +or- 2)
2. vacuum leak from intake (could be internal leak into crankcase)
3. fuel injector bad or dirty, fuel pressure, fuel regulator, fuel supply leak in intake (check fuel pressure 60-66psi), (do an injector cleaning service), (check for raw fuel in intake)
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rough idle
rough idle after changing all plugs and ignition packs, no reading from the under dash scanner,188900 miles
Re: rough idle
If you scanner won't work when you plug it in to the dara link connector check to see if you have battery power to pin 16. If there isn't battery voltage on pin 16 check for a blown fuse.
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