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Q:

check engine light on 1999 Dodge Ram 1500

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
ok so i went to see why my check engine light was on they did a smoke test checked fillters and oxygen sensors and as well the gas cap and was good but did not find any thing when disconectting the battrey the light will go of for about a week then comes back on what would be the problem?
(3) Answers
(6) Comments
I had the same problem. My gas cap was checked as good as well as all of your other items, Then the man tightened the gas cap real real tight and it went off forever!!!
Try that.
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Take it to another shop to see what code is stored? Most computer have a PROM chip that stores memory regardless if you disconnect the battery or not? If a code is still not present you may have a shorted wire from the computer to dash or a bad dash module? They may need to check the BCM to see if a code is stored there? This is a computer that is separate from the PCM. The BCM is also call the Body Control Module.
I agree with c & a automotive, take it to another shop and get a second opinion.

Zee
i figured out what it was it was a timing shifter sensor in the trans mission went out i got it fixed