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MISFIRE

Tiny
AUGUST SIUTA
  • MEMBER
  • 1999 DODGE INTREPID
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 68,000 MILES
Fault Code P0300 All plugs wires and coils have been replaced. If humidity is low no problem. When you first start the engine no errors. When you get up in temp the check eng. Light will flash 12 to 30 times then stop and repeat a couple nore times. After about 5 miles the check eng. Light will be steady with no more misfires. The engine runs excellent with no hesitance.

Thank you
August Siutya
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Thursday, January 13th, 2011 AT 6:47 PM

1 Reply

Tiny
ERNEST CLARK
  • MECHANIC
  • 1,730 POSTS
These are the possible causes for a "Multiple Cylinder Misfire":

Ignition system (Which includes primary/secondary)
Fuel System (From pump to injectors)
All wires/connectors in ign/fuel system
Restricted exhaust
Mechanical engine problem (broken valve/worn rings/oil in cylinder, etc)
Damaged trigger wheel (CKP)
Contaminated fuel
PCM (wires/connectors/grounds, etc)
Failing emissions systems (EVAP, EGR, etc.)
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Saturday, February 5th, 2011 AT 12:10 PM

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