car is bucking under acceleration...any ideas? Options

[era vulgaris]

My car has developed an extremely annoying bucking under acceleration. It started about a week ago, and at first it would only happen while accelerating out of a fast turn. But now it does it all the time while accelerating. It's like the car is oscillating between half power and full power, making it lurch-slow-lurch-slow-lurch-slow. It's like you're riding a bucking bronco or something. The only cure seems to be to get off the throttle completely, upshift, then slowly accelerate.

Anyone have any idea where I should start looking first?

[era vulgaris]

Check all of the vaccum lines. there is one in particular I have experienced that is buried under all of the F.I. It is a large 3 way that ( IIRC) connects the Decel valve, Aux air reg and the intake manifold together. That will cause symptoms like you are describing. there are diagrams somewhere on the site.

I've replaced all of my vacuum hoses and recently repaired my AAR. I know the 3 way you're talking about. I'll check it to make sure maybe something hasn't come loose there while I was replacing the AAR.

When my 2.0 did this, it was the trigger points in the dizzy. The contacts were good but the dogs that rides the cam on the dizzy shaft that open and close the points was worn out so they weren't opening fully.

Mine did this. Did a LOT of things to try to fix but I think it was overhauling the dizzy that finally did the trick. Also check all grounds.

Could be a loose ground wire on your distributor plates. Simple to check, just pop the dizzy cap, remove the rotor and dust cap and look at the ground wire connecting the plates.

All you guys talking about the dizzy have me thinking. When I got the car, the vacuum canister was missing a screw and was hanging out of the dizzy causing the car to run waaaay underpowered. When I reattached it, the power came back. It does feel like the car is flipping back and forth between the feel of those two instances. I'll check this out.

Is there a good guide to overhauling the dizzy, plates, trigger points, etc?