Rough idle and hesitates when trying to accelerate

EPYON2K1

MEMBER
2000 CHEVROLET TAHOE

I have a 2000 Chevrolet Suburban. It idles rough and when I step on the gas it staggers, and power is lacking. Catalytic converter? I hear no air leaks, but I do hear a tzt sound in the radio like the old points distributor when the rubber insulation has worn off. I also have an oil pan leak. How difficult is it to repair? I appreciate all the help.

1 Reply

KASEKENNY

MECHANIC
18,907 POSTS

This could be a number of things but there are things we can do to limit this down. First, we need to check for a vacuum leak. Just because we don't hear any air leaks doesn't rule out small leaks past the air sensors. This will cause exactly what you are seeing. Here is a guide on how we do this:

https://www.2carpros.com/articles/how-to-use-an-engine-vacuum-gauge

Next we need to monitor fuel pressure. Here is a guide that will help with that. I attached the spec on this.

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

Lastly here is a more general guide about this issue that will go into more detail on what we are doing.

Based on this info, I am sure we can either discover the issue or eliminate things to narrow this down in order to figure it out.

https://www.2carpros.com/articles/engine-hesitates

Let me know what you find with this and we can go from there. Thanks

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