Thank you for your advice. I have a couple more questions to go along with this. I haven't done anything yet on the car but after backfiring a couple of times, the check engine light went out and it seems to be running better. This problem seems to tie in with problems that I have with the brakes at the same time and the ABS light has also been on. At first it was off for awhile, when the check engine light went off. The next time I started the engine the ABS light came back on. Can you advise me on this.