Sputters and dies

[mbeebe1]

When driving at highway speeds for a while then coming to a stop the RPMs wiggle up and down and then the engine dies. Does anyone have any idea what is causing this or have you had this problem?

[speediva]

I'm posting this WAAAAAAAAYYYYY too late, but I've never experienced this problem with our Silhouette. But it's an Olds, so anything is possible... :o

[mbeebe1]

It turned out to be the oxygen sensor.

[donnell68]

Can you tell me more i am experinencing the same thing on my car also my engi light stays on. how much was the oygen sensor and where did yo9u get it put in etc... helppppppppp

[joker55]

I have been having the same problem and my check engine light is on too. I took it to a mechanic and he told me the Ignition module was out and the comp. was out. He replaced the module and that did not fix anything. I have not replaced the comp yet. That brings me to my post what is the comp called or a part # ??? So I can see if I can find it cheaper on the net. My next question is any sugestions on where to find it? Thanks Joker55.

[donnell68]

IT turned out to be a faulty catalyc converter, Luckily it is still covered under the manufactors warranty under a clean act law. Most mechanics and dealers will not tell you this. I was at pep boys and they were ready to charge me for this $600.00 but i bought an extended warranty over the net and called them and they informed me that they will not cover this item because its a dealer covered part. Hope this helps you all. Once it was changed car ran fine and i changed the oygen sensors too for good measure.

[GMMerlin]

You will find warranty coverages listed in your owners manual.
On most GM cars, catalytic converters and PCM's are covered under a 8 year, 80000 mile factory warranty.
Most aftermarket repair facilities are not aware of warranty coverages. Had you had your vehicle diagnosed and repaired at a GM dealer, the converter would have been replaced at no charge to you.

[donnell68]

Also i originally bought the car to a GM dealership 2 years ago when this first started they charge me a fortune to tell me there was nothing wrong...
it was replaced at no charge at a GM dealer, but i first went to pep boys for inspection and a oil change. it didnt pass inspection due to the converter malfunctioning. afterwards i bought it to a gm dealer and they fixed it, it took 3 weeks. 2 weeks for an appointment then another week they kept the car order parts and installed. way to go GM dealer...... they didnt even get me a similiarreatal car as a replacement they rented me a compact car. they had my mini Van which seats 7. compact car seats 4 maybe five. I had a plan trip to sesame place that weekend and had to take 2 cars. Way to go GM dealers....
While they had my car they also pulled off some side molding which they denied, they wouldnt fix it but recommedned a mechanic who would for a small fee. Way to go GM dealersssssssssssss nuff said. The converter was covered under a clean air act law not under anything that GM has. Way to go GM dealersssss. ok now nuff said.