00 Silverado 5.3 - Rough Idle
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CF Beginner
Joined: Nov 2010
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00 Silverado 5.3 - Rough Idle
I have a 2000 Silverado Z71 4x4 with the 5.3 and it has developed a rough idle.
I have replaced the Throttle Position Sensor and just finished installing new plugs and coil pack wires. None of which helped much...
It runs fine other than that.
Looking for suggestions of what else I may try..
Other issues that I think are unrelated but mention anyway...Automatic Trans ( 4l60e) does not shift from 1-2 when accelerating, soon as i let off gas it does fine..Ive replaced teh trans, which DID NOT fix the issue, it did for about 2 months but the issue has returned.
Gas Gauge is erratic, was fine before trans replacement but now is wonky.
I have replaced the Throttle Position Sensor and just finished installing new plugs and coil pack wires. None of which helped much...
It runs fine other than that.
Looking for suggestions of what else I may try..
Other issues that I think are unrelated but mention anyway...Automatic Trans ( 4l60e) does not shift from 1-2 when accelerating, soon as i let off gas it does fine..Ive replaced teh trans, which DID NOT fix the issue, it did for about 2 months but the issue has returned.
Gas Gauge is erratic, was fine before trans replacement but now is wonky.
CF Monarch
Joined: Oct 2017
Posts: 4,605
Likes: 269
From: USA
I have a 2000 Silverado Z71 4x4 with the 5.3 and it has developed a rough idle.
I have replaced the Throttle Position Sensor and just finished installing new plugs and coil pack wires. None of which helped much...
It runs fine other than that.
Looking for suggestions of what else I may try..
Other issues that I think are unrelated but mention anyway...Automatic Trans ( 4l60e) does not shift from 1-2 when accelerating, soon as i let off gas it does fine..Ive replaced teh trans, which DID NOT fix the issue, it did for about 2 months but the issue has returned.
Gas Gauge is erratic, was fine before trans replacement but now is wonky.
I have replaced the Throttle Position Sensor and just finished installing new plugs and coil pack wires. None of which helped much...
It runs fine other than that.
Looking for suggestions of what else I may try..
Other issues that I think are unrelated but mention anyway...Automatic Trans ( 4l60e) does not shift from 1-2 when accelerating, soon as i let off gas it does fine..Ive replaced teh trans, which DID NOT fix the issue, it did for about 2 months but the issue has returned.
Gas Gauge is erratic, was fine before trans replacement but now is wonky.
Are you showing any OBD II codes at all? Could be a vacuum leak somewhere, like intake, EGR issues perhaps,
I'm here for the party
Joined: Feb 2019
Posts: 1,467
Likes: 83
From: Maryland
could be even something as simple as a grounding issue. start with the basics, if it started after the trans replacement look for any grounding straps that are just hanging or loose wires
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Mikeh61
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