i would look at basics like the plugs, wires, coils, fuel and air filter. if none of these then you need to check the cat converter and have a analysis done with the computer data.

Roy

Answered by ASEMaster6371 (expert)
24,845 answers provided

I own a 2009 Buick Enclave and had the same problem since 3 mos after purchasing it new. It took Buick dealer 18 months to finally find the problem. Engine Cylinder misfiring which caused coil and spark plug to break down. It has happened again two more times on different cylinders. In fact is happening right now so am taking back dealer. My car is out of warranty as well.

Answered by marciakf
0 questions asked

Finally, the Buick Dealer has diagnosed the problem! It's exactly as marciakf experienced with the coil (I think they said they had to replace an ignition or engine coil - (not sure what the difference is) and 2 spark plugs). It fixed the problem and it hasn't happened since. I only hope it lasts before the warranty runs out!

Response from jloope
1 question asked