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01-05-2015, 03:23 PM | #1 | |
AF Newbie
Join Date: Apr 2007
Location: huron, Ohio
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99 Silverado 5.3l 80,000 miles
Here is my problem. Will not idle at a steady rpm goes between 300 and 700rpm and when you put it in drive going down street speed just keeps on increasing. When you take your foot off the gas it takes a long time to slow down. Fuel pump, filter all lines recently replaced. I have good fuel pressure and steady fuel pressure. No codes. any ideas? Trying to fix all this so I can sell it. Thanks for any help
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01-06-2015, 01:05 PM | #2 | ||
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Re: 99 Silverado 5.3l 80,000 miles
Quote:
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01-06-2015, 03:32 PM | #3 | |
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Re: 99 Silverado 5.3l 80,000 miles
I should have mentioned I did clean the throttle body..Apparently the IAC went bad I did not have an issue until fuel pump was replaced not sure if that can relate to it but anyways replaced and running great now. Thanks for the quick reply.
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01-07-2015, 02:57 PM | #4 | |
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Re: 99 Silverado 5.3l 80,000 miles
the IAC will get damaged from using the wrong cleaner or forcing the IAC valve to move. never use any cleaner like carb cleaner or ??? as this will eat at the motor/valve/plastic etc... only use TB cleaner. when the idle is erratic the vacuum lines or the IAC are the usual failures.
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