Re: What might be causing this?

From: Terrible Tom (SilverEightynine@aol.com)
Date: Mon Jan 19 2004 - 13:29:07 EST


Phillip Batson wrote:
> I noticed today when I got to work and parked, I let
> the engine run a couple of minutes while I was
> preparing to go into the building, and it kept
> dropping to ~500rpm then move up to ~700rpm then back
> down again. It did it a few times before it evened
> out.
>
> I know its time to change the plugs and do my oil
> again, but could that be the cause? Just wondering if
> I need to possibly look into changing plug wires,
> distributor etc. I've got about 55k on it now. I've
> been changing the plugs every 10-15k.

If you were at idle with the defroster running, your AC compressor
(assuming you have AC) would be kicking in and out as part of the
defrost cycle. That could account for RPM fluctuations.

-- 
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Terrible Tom -- AIM & Yahoo Name: SilverEightynine



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