I have a 95 G20 with a 350. I've had a problem with the motor ever since I got this van. It's pretty minor so I figured I'd just get around to it later. What happens is when I'm driving, it usually happens downhill, and I let up off the gas it starts to stutter/cut-out/surge or whatever, I don't know what to call it. You can feel the van slightly going back in forth when it happens, and it's almost as if its trying to die while I'm driving. Sometimes it'll do it a bunch, sometimes it won't at all, and it happens so little I figure it's not a big deal. Used to happen a lot more when i first got the van, but now that I've replaced pretty much everything on top of the motor and tuned it up, it has ran better. Replaced coil, timing cap and rotor, spark plug wires, rebuilt the throttle body, and other misc. stuff. I figured that'd solve it but it persists. Also just sitting in the driveway, giving it a bit of gas, it starts to surge, rpms go up down up down.

Any help with this would be appreciated, thanks.

95 GMC 3/4 Vandura Traveler by Explorer Conversion
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