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Old 03-10-2004, 01:58 PM
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GirlSolRacer GirlSolRacer is offline
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Rpm's are jumping

I have an 84 silverado with a 355, edlebrock intake manifold, holly 4 barrel carb, 700 turbo r tranny and a few other things. I have been driving the truck like this for about a year with no problems at all. Regular oil changes, etc.. Yesterday I got on the road, accelerated to about 2000 rpms, and the rpms started jumping/fluctuating slightly. If I accelerate more, or let off some, it stops. It isn't at any certain mph, just when i get going and maintain rpm.
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Old 03-10-2004, 08:37 PM
btcva19 btcva19 is offline
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Re: Rpm's are jumping

I had a similar problem and it turned out to be the altenator.
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Old 03-11-2004, 08:52 AM
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GirlSolRacer GirlSolRacer is offline
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Re: Rpm's are jumping

The truck still runs strong, just the small surging of the engine with the rpms. When it starts doing this, if I accelerate, it stops, then gets back into it. Or if I let off, it stops too.
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