Quote:
Originally Posted by Ol'Jim
Trying to help brother in law, who is 800 miles away. His truck was running rough, random missing, occasional backfires. He changed plugs, no difference. He took it to O'Reilly, had codes read, kid told him Catalytic Converter was bad. I told him to check the distributor cap for the white "calcium"-looking buildup on terminals, as it is conductive and chunks can fall down into the distributor and mess with the magnetic pickup/sensor. Had that happen on my '88, caused similar symptoms. Anyway, he went to an exhaust shop and spent $360 for 2 new cats, which did nothing to help. This was 4 days ago, now his check engine light comes on, still runs poorly, and Autozone scanned it, came up with code P0441. Is that an Evaporative Emissions system fault? Does the '98 have a charcoal cannister up front, like the older ones did? Thinking this fault has nothing to do with the misfire issue, but maybe the exhaust shop messed up the fuel vapor line? Looking for ideas, thanks!
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What kind and size truck?
That code does not show up on code chart.
If it is running that bad it should have more codes.
I would get a good repair shop to put it on a good engine capable scanner.
Post back any codes from a good engine scanner.