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Author Topic: Idle unsteady  (Read 4465 times)

Offline Tazman

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Idle unsteady
« on: March 15, 2010, 12:04:00 pm »
My 87 is stock with fuel injection.Once in a while when at idle it will fluctuate a little,enough that the oil gage moves.Any ideas on what this is and how it can be fixed?Thanks
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Offline Lt.Del

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Re: Idle unsteady
« Reply #1 on: March 15, 2010, 12:05:55 pm »
is it when it first starts up cold, or after driving a bit w/ a warm engine?
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Offline VileZambonie

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Re: Idle unsteady
« Reply #2 on: March 15, 2010, 12:48:08 pm »
Check for vacuum leaks and check the tbi base gasket
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Offline 1980c10

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Re: Idle unsteady
« Reply #3 on: March 15, 2010, 08:34:35 pm »
Any codes? You could check your idle air control valve. Any other symptoms?
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Offline Irish_Alley

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Re: Idle unsteady
« Reply #4 on: March 16, 2010, 10:39:25 am »
Also does the volts drop any ?
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Offline Tazman

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Re: Idle unsteady
« Reply #5 on: March 16, 2010, 11:20:17 am »
It does it when warmed up mostly.Thanks for the ideas I will check those out.
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Offline Irish_Alley

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Re: Idle unsteady
« Reply #6 on: March 16, 2010, 08:09:29 pm »
The reason I asked about the volt is when my 94s alt was going up it would stop charging and the truck would run off the battery causing it to idle erratically
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Offline Tazman

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Re: Idle unsteady
« Reply #7 on: March 19, 2010, 11:31:24 am »
I will check that,I do not have an alt gage.Thanks
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