Quote:
Originally posted by Mr. Pockets
As for 'feeling' a rough idle, I used to swear my SVX did the same thing. I started buying gas from a different station - I suspect that the discount station I was going to was mixing octane ratings. You are putting in premium fuel, right?
My guess is going to be that you need to replace one or both of your exhaust O2 sensors. 90% of the time that I've had a 'check engine' light come on in any of my cars was due to a faulty O2 sensor. That could also cause your poor mileage or rought idle.
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I get my gas from one of 2 stations. Neither are discount or mini marts. I use either Sonoco Ulara 94 or Amoco 93.
Will the O2 sensor show up as one of the ECU codes?