Originally Posted by 345hpss
:think: These cars are perfectly capable of cruising around town all day at 1000 rpm, and you know what, the amount of gas that saves is phenomenal. The point I was making is that under those conditions of high load, low engine speed, a driveability problem will be exagerated and may show up before you see it in a
"more normal" low load situation.
Obviously I am NOT crazy as Need4Speed's problem is getting worse. I stand by my statements. The car should be smooth, just not very responsive under those conditions.
Could be spark, could be fuel, could be exhaust. All of those things would cause his problems. A dead cylinder will definitely give him the vibration he is talking about. Plugs, wires, coil packs should all be checked. A plugged up cat would definitely cause these problems too, and I point that out only because he mentioned bottoming out the car just before this happened.