The car has a vibration when I get to speed on the freeway and try to hold it at that speed. Even when I set cruise control. It also has rough idle. Things I have replaced are: fuel pump, fuel relay, fuel pressure regulator valve, plugs and wires. I have no idea why it is shaking only when trying to maintain speed, not while speeding up or slowing down.
Mar 27, 2009 at 1:24 AM
