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Hesitating as it accelerates

Tiny
DONALDKIMBERLYR
  • MEMBER
  • 2000 OLDSMOBILE SILHOUETTE
Engine Performance problem
2000 Oldsmobile Silhouette 6 cyl Front Wheel Drive Automatic

My 2000 oldsmobile silhouetter acts like it is hesitating as I give it gas going down the road. I can hear what sounds like a whistle if I give it more gas to see if it will straighten up. My RPMs jump up and down as it is doing a jerking motion like it wants to go but wants to quit. Sometimes I hear it back firing. If I let off the gas a bit sometimes it corrects itself and runs good. Can someone please tell me what I should do first maybe step by step so I can get this fixed. This just started Aug. 4, 2009 right after I filled up my vehicle with gas to go on vacation. I want to keep my vehicle running. Thanks in advance.
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Friday, August 28th, 2009 AT 8:11 PM

2 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,574 POSTS
Hello,

It sounds like you have a plugged catalytic converter which is not allowing the exhaust to exit the engine but to confirm the problem lets follow this guide.

https://www.2carpros.com/articles/how-to-test-a-catalytic-converter

Please run this test and get back to us.

Cheers, Ken
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Monday, January 29th, 2018 AT 7:17 PM
Tiny
DONALDKIMBERLYR
  • MEMBER
  • 3 POSTS
Yep that was the problem, I took it too a garage and they confirmed your prognosis. The car is running great again ;)
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Monday, January 29th, 2018 AT 7:17 PM

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