RPM Trouble about 1500 RPM's

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11-08-2009, 11:37 PM

Mswezey

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Join Date: Aug 2009

Location: Wichita Falls, Texas - College. DF-Dub, when not in college

Posts: 312

RPM Trouble about 1500 RPM's

Going down the highway or road ( 40-65 MPH) and having the car at about 1500 RPM's my car starts jumping up and down on the RPMs like crazy about +- 300.

What would cause this?

Other that that the car runs great at WOT. and other RPM Ranges.

I know about 2 months ago we put a used set of heads on it. and my dad kinda rushed adjusting the valves. But if it was a bad adjustment on the valves wouldn't the car act up more than just at 1500 RPMs?

Thanks