I have a '03 tl-s with 143k miles. I changed the timing belt, water pump, and spark plugs about 130k. My check engine light has been coming on along with the traction control light and the ABS light. I took my car to the local mechanic and ran a diagnostic and came back with 'multiple cylinders mis-fire'. My question for yall is where do I start???? and with the mileage that I have, what should I do to keep up with the maintaince?

 

Try to diagnose were the missfire is coming from. Can you hear or feel the missfire? Try some seafoam.

 

Typical random misfire is usually 1 coil pack. Most have great success buying 1 new coil pack and starting on cyl #1 and replacing the coil pack, reset the ECU and drive the car. IF the check engine light comes on Take off the new coil pack put the one that was on that cyl back on and go to #2 and repeat. You repeat till you find the coil pack that is causing the problem. Also make sure your spark plugs are all tight.