I have an 89 auto vert that every now and again (not to often) in neutral and low rpms going down the road the engine will idle up and down a little(it is very slight). Sry its kind of hard to explain what I mean if you guys need it I can see if I can get a vid if I can catch it.

Thanks

 

no one?

 

mabye you can take to a performance shop in your area, they might be able to help...