vibration during acceleration at 2000 - 2100 rpm - Chevy Colorado & GMC Canyon

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Old 10-02-2010, 10:50 AM   #1 (permalink)
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Default vibration during acceleration at 2000 - 2100 rpm

Have an 05 canyon that makes a vibration noise during acceleration, but only in the 2000-2100 rpm range. doesnt matter if its in 2wd or 4wd, or what gear its in. It does not make the noise if reving in neutral. It sounds like it is coming from under the front part of the truck or possibly the engine compartment. I got under the truck and everything I pulled on appeared tight. I thought it might be the heat deflection plate above the muffler so i screwed it to the underbody where ever i could access, but the noise is still there.

any ideas?

buddy
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Old 10-02-2010, 11:01 PM   #2 (permalink)
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Default Re: vibration during acceleration at 2000 - 2100 rpm

By "vibration noise" I assume you mean a rattle or buzzing sound. Usually these kind of noises, when specific to a particulat rpm range, are exhaust shields or loose exhaust components, or air filter covers, or something similar. Best bet is to get a friend to hold the rpm steady to make the noise while you listen around to pinpoint the source of the noise. Of course, DON'T stick your hand into the engine bay carelessly with the engine running.

Good luck.
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Old 10-24-2010, 12:26 PM   #3 (permalink)
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Default Re: vibration during acceleration at 2000 - 2100 rpm

I had the same problem. Like Ranger said, it was my exhaust heat sheild located just above the front axel on the passenger side. Its just a thin peice of metal which over time rusts itself loose. You can either bend it back to stop the noise, rip it off completly or replace the entire exahust component. Im cheap so i went with ripping it off.
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Old 10-27-2010, 11:00 PM   #4 (permalink)
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Default Re: vibration during acceleration at 2000 - 2100 rpm

Quote:
Originally Posted by ADRENALINE86
I had the same problem. Like Ranger said, it was my exhaust heat sheild located just above the front axel on the passenger side. Its just a thin peice of metal which over time rusts itself loose. You can either bend it back to stop the noise, rip it off completly or replace the entire exahust component. Im cheap so i went with ripping it off.
Is the piece you're talking about the heat shield that is "L" shaped?
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Old 11-06-2010, 11:27 AM   #5 (permalink)
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Default Re: vibration during acceleration at 2000 - 2100 rpm

Had the same issue, so I took my trusty long screwdriver and started probing around and discovered 2 screws missing off the heat sheild. Now I just need to find out what size the nuts are and get some new ones.

DISCLAIMER: not responsible if you maul yourself probing the engine with a screwdriver cause you're to freakin stupid!
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Old 11-20-2010, 11:11 AM   #6 (permalink)
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Default Re: vibration during acceleration at 2000 - 2100 rpm

Do you have a flowmaster?

viewtopic.php?f=1&t=84579
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