2004 Mitsubishi Endeavor Engine

2004 MITSUBISHI ENDEAVOR
123,608 MILES • 3.5L • 4WD • AUTOMATIC
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OMOBA BANKOLE
  • MEMBER
  • 1 POST
I have a 2004 Mitsubishi endeavor Limited, it wont run well when on idle but when on speed it run well and when scanned i have the following DTCs codes :
P0431, P0421, P0300, P0431, P0421, P0300. What can i do to solve this problems?
Jul 21, 2014 at 5:25 PM
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HMAC300
  • ✓Experienced Mechanic
  • 48,601 POSTS
you have misfires and those are very hard to diagnose. have a pro do it as it's hard form him as well and he'll notify you of other things that are wrong.
Jul 21, 2014 at 10:32 PM
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