Tranny question

Like I said before: I don't think you have the option of not looking at the engine and tranny mounts. At the age/mileage of your car they often need replaced. There is not much to the mounts (at least, not much to the rubber part) and so by ~120,000 KM they are usually shot. If you are ambitious you can get a set of scrap mounts from a junkyard and fill them with polyurethane (there is a different thread on this editboard about how to do that). In addition, I suspect the other thing here is an issue with wear-and-tear on components that won't show up as computer codes - there is no code for a bad tranny mount for instance. There also is no code for a bad crank sensor (not your problem IMHO, car won't run at all if the crank sensor quits) either. And her eis a hint for you - sometimes if you disconnect hte battery for an hour or two, the computer re-sets itself to the original (default) curves for engine and transmission management. It could be that over time your car 'learned' bad habits from (you or the) previous owner - can't tell remotely.

Albertj

albertj wrote:

Like I said before: I don't think you have the option of not looking at the engine and tranny mounts. At the age/mileage of your car they often need replaced. There is not much to the mounts (at least, not much to the rubber part) and so by ~120,000 KM they are usually shot. If you are ambitious you can get a set of scrap mounts from a junkyard and fill them with polyurethane (there is a different thread on this editboard about how to do that). In addition, I suspect the other thing here is an issue with wear-and-tear on components that won't show up as computer codes - there is no code for a bad tranny mount for instance. There also is no code for a bad crank sensor (not your problem IMHO, car won't run at all if the crank sensor quits) either. And her eis a hint for you - sometimes if you disconnect hte battery for an hour or two, the computer re-sets itself to the original (default) curves for engine and transmission management. It could be that over time your car 'learned' bad habits from (you or the) previous owner - can't tell remotely.

Albertj

Thank you, I'm going to keep these things in mind and have the mounts checked out, will try the battery idea as well.

good point on the computer re-flash there albertj I've heard of this helping recently on a shift slip problem for a 06 Rendezvous with the same 4t65e tranny...doesnt cost anything to try!

Its funny that you guys mentioned the computer thing, as I'd been thinking before that my shift points seemed to have changed. I was wondering if the computer would configure itself given the opportunity, or if I was simply mistaken.

Ok, well, I've changed the speed sensor and left the battery unhooked overnight. I couldn't get the engine light to come on, meaning the speed sensor must work now, but now the car won't move at all.

Previously the car would only drive when the engine light came on.

Jamie- what was the original code that indicated speed sensor?
If you rev the engine for a minute or two while in drive will it eventually thump into gear?