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Service Engine Light - OBD

07-27-2004, 10:56 PM


I own a 1996 Pontiac Grand Prix. Recently the "Service Engine Soon" light has been staying on while driving. I've had several garages check it and they all point to the "EGR" (Exhaust Gas Recirculation) error code as the cause of the light staying on. I did have a cracked exhaust manifold (now repaired), replace the EGR valve (light still on), and two new mufflers (light came back on after reset). The code states "insufficient EGR flow."

Car is well maintained; engine runs good, no misfires according to OBD scan by the garages I've visited.


Has anyone else experienced similar symptoms on this type of vehicle, or, on any vehicle? Replies are greatly appreciated. Thanks.


07-30-2004, 01:36 PM
Try posting in the Pontiac section of the forum, Im sure they would be much better at helping you out.

08-06-2004, 08:14 PM
Thanks for your reply and tip. After I had discovered this great web site, I dug in further and found the Pontiac section. I've had several generous members offering great advice, and, I've had the car repaired by a local shop that performed exactly the same as suggested by the Pontiac repliers. Everything is running well, now. Thanks again.

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