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Changed the fuel filter on my ‘02 C5 (128,000 miles) Monday and now getting the above captioned codes. Put approximately 50 miles since and the codes still appear.
Changed the fuel filter on my ‘02 C5 (128,000 miles) Monday and now getting the above captioned codes. Put approximately 50 miles since and the codes still appear.
I assume they are C and not H codes, and when you say the "still appear" ....you mean they come back after being reset.
So it sounds like you got a bad filter/regulator. I would test the pressure at the rail so you have a point of reference. If you replace it get a good brand....absolutely nothing from Amazon or ebay unless you find a trusted seller with NOS.
Several times now, the codes are HC and others are either just H or just C. I can’t get into a shop until next week.
The car runs fine. No black smoke, not sluggish, etc. Any ideas?
Suggestion was made to check fuel pressue at the rail....did you do that? You have a common denominator here. You had no codes or issues before the filter/regulator was changed, and now you do.
What do you think the most likely cause of your problem is based on the information available?
Several times now, the codes are HC and others are either just H or just C. I can’t get into a shop until next week.
The car runs fine. No black smoke, not sluggish, etc. Any ideas?