2003 PONTIAC MONTANA
165,000 MILES
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ANONYMOUS
  • MEMBER
  • 1 POST
Check engine comes on and flashes at 30 mph,loss of power,rough idle
Jan 26, 2013 at 6:13 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
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CARADIODOC
  • CAR REPAIR CONTRIBUTOR
  • 34,308 POSTS
STOP THE ENGINE! A flashing Check Engine light means way too much unburned fuel is going into the exhaust system and the catalytic converter is going to overheat and melt. That will turn an expensive repair into a really expensive repair. The rough running is due to a misfire and is the likely cause of that unburned fuel.
Jan 26, 2013 at 6:29 PM
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