Intermittently comes on and then goes off
You gotta get the timing checked .It comes ON mostly when there are electrical related problems with the engine .
SOURCE: Would faulty EGR valve cause check engine light to come on?
If EGR was out your engine light would stay on!usually hi way drive is a whole new emission game sensor work 100% different that city drive you have a O2 sensor problem don"t Get$$ the problem when if you say it only will do it on highway then take it on highway with OBD 2 in run scan mode have a passenger observe it this will give the the proper code you will need to peg it cheers!
SOURCE: engine stalls, check engine light, not fuel filter.
the white smoke as it stalls could be steam in the exhaust. This is caused by coolant leaking into cylinders from a leaking head gasket. You should check cylinder compression next with a compression tester.
SOURCE: 1999 Lincoln Town Car (Check brake Light comes on intermittently
brake light switch located on the steering column by brake peddal
SOURCE: intermittant check engine light
The only way to find out what the problem is is by doing a scan of the car computer module using an OBD code reader.
The codes returned will tell you the cause of the problem.
SOURCE: check engine light comes on intermittently,
the 1st thing u need to do is have the system computer tested for trouble codes, anytime the light comes on a trouble code is stored, there are over 200 of these codes for potential system malfunctions, yours sounds like a O2 problem.
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