Question: Intermittent service engine light
After driving at highway speeds for 45 minutes, car has SES light come on for 15 seconds and then goes out. After another 5-10 miles or when climbing a hill, SES comes on for 5-15 seconds, then goes out. This car does not have memory in its OBD-I. Any thoughts on what is causing? Have just tuned with new plugs, wires, fuel filter, etc. THE SES light was intermittent before tuneup, also. Thanks, SS
Richard W
Expert Mechanic
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