pontiac trans sport "service engine soon"

Old 04-24-07, 08:14 AM
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Question pontiac trans sport "service engine soon"

I have a 93 pontiac trans sport i did a full tune up about 3000 miles ago
changed the oil sunday driving home yesterday the service engine soon light came on
what are some reasons the light will come on
i checked the gas cap always used the same grade of gas
some one told me it just needs to be reset
by taking off the positive battery cable
or should i get the code scanned from autozone?
Old 04-24-07, 10:12 AM
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The service engine light will come on a intervals of around 3000 miles. To reset it turn you key to the on position (don't start the vehicle) and within ten seconds press the accellerator to the floor three times. Turn your key off and back on, the light should be out.
It's not a good idea to disconnect the battery cable as this affects a lot more than that little light!!

Old 04-24-07, 05:05 PM
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never a bad idea to KNOW why the light came on............You're in the age where the car can be either OBD1 or 2.....OBD 1 you can clear by removing the neg cable for 10 secs............OBD 2 you either leave it disconnected overnight or clear it with a scan tool
But find out what the code /codes are first in case there really IS something going on that needs attention

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