check engine light lean and misfire

[rflexible]

Our 99 solara sle has been in the garage four times trying to fix the check engine light. after a repair and driving 8-10 miles we still get the codes for P0171 System too Lean, and P0301 Misfire Detected - Cyl. 1, P0302 Misfire Detected - Cyl. 2, and P0303 Misfire Detected - Cyl. 3

the dealer has replaces battery, plugs, and coil packs. and they let it sit overnight with battery disconnected to reset and recalibrate sensors. the light came on again. before we take it in again I'd like to identify what should be checked next.

[Mike Gerber]

First of all, if you are going to post this in the Camry forum, you would be better off posting it in the generation 3 and 4 forum.

If I were to do anything, I would start by replacing the spark plug wires myself and see if that fixes the misfire codes; P0301, P0302, etc. The dealer has replaced all the other basic ignition components.

After replacing the plug wires, you can get the codes read and cleared for free at your local Autozone. Then drive the car and see if any of the codes return.

Mike

[fredk]

look for a vacuum leak

[joandjo]

Clean your MAF sensor.