Well, manually shifting to LOW doesn't always override the problem. You still could have a transmission problem, BUT. You feel a vibration. This could be a shudder from the transmission or, what you said, the rear end failing. I would tend to think if the rear end was failing, it wouldn't straighten up. So, I'm still leaning towards the transmission. Can you drive a standard? Have you ever tried to start off in too high a gear? Or shift to a high gear too soon and lug the engine? You feel a little shudder/shake/jerk. Similar(but not exactly the same) things happen when you do an automatic that way. It's trying hard to go but the gear ratio is too high so you lose torque. The engine lugs, and the transmission starts slipping/shuddering/shaking trying to stay engaged under the tremendous load from the engine. I've also seen them try to go into 2 gears at the same time causing similar results. I really think you need to get it to a transmission shop unless you're pretty snappy with automatic trannys.
Monday, October 20th, 2008 AT 9:57 PM