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2002 Chevy 1 ton van miss fires on all cylinders when warm


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John R T
New User

Jul 1, 2014, 5:46 AM

Post #1 of 4 (3094 views)
2002 Chevy 1 ton van miss fires on all cylinders when warm Sign In

My mechanic is having a hard time identifying why the computer (which was also replaced) claims miss fire on all 8 cylinders once the engine is warm. He has also replaced sensors, checked for vacuum leaks in the PLASTIC intake manifold to no avail. Once this engine warms up it will barley run.


Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Jul 1, 2014, 6:03 AM

Post #2 of 4 (3085 views)
Re: 2002 Chevy 1 ton van miss fires on all cylinders when warm Sign In

This has to have a CEL light on. Post code #s not just what someone thinks the problem is and see if we can narrow this down,


T



Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Jul 1, 2014, 7:21 AM

Post #3 of 4 (3078 views)
Re: 2002 Chevy 1 ton van miss fires on all cylinders when warm Sign In

Yes, post ALL the codes, even if you think they are unrelated.



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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



nickwarner
Veteran / Moderator
nickwarner profile image

Jul 1, 2014, 7:26 PM

Post #4 of 4 (3048 views)
Re: 2002 Chevy 1 ton van miss fires on all cylinders when warm Sign In

Also, please let us know what engine is in this and the mileage.






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