2000 Chevrolet Suburban Hesitates

2000 CHEVROLET TAHOE
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EPYON2K1
  • MEMBER
  • 15 POSTS
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.
Jan 15, 2007 at 3:44 PM
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KASEKENNY
  • ✓Experienced 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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Mar 26, 2020 at 8:24 AM

Suggested Repair

Check for vacuum leaks, including small leaks past the air sensors, with a vacuum gauge, and monitor fuel pressure against the specified range. Use those results to narrow the rough idle and hesitation before replacing parts.

Conversation Summary

The owner of a 2000 Chevrolet Suburban reported a rough idle, hesitation and lack of power when accelerating, a radio ticking sound, and an oil pan leak, and asked whether the catalytic converter was the cause and how hard the repair would be. The expert said several causes were possible and recommended checking for vacuum leaks and monitoring fuel pressure, then following up with the results.

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