car stalling when coming to stop but starts up until put in gear?

Question

auto trans

Answer 1

There is a part in the transmission that locks the engine to the wheels when you get to 45 mph (or so, depending on make model etc). It is a fuel saving feature to eliminate slip in the transmission at highway speeds.

It can hang up and stay engaged. As you slow down, it is supposed to withdraw and let the transmission slip again. If it doesn't, the engine has to stall as you come to a stop. You can restart it in neutral but, if the part stays engaged, when you shift to Drive, it will stall again because there no slip. Kinda like starting a stick shift by popping the clutch real fast without lots of gas.

I guess you fix it by tracking it down but sometimes it is inside the transmission and you have to pull the transmission.

Maybe you can find the wire from the computer that controls it and remove it so if won't engage (I'm assuming the computer is telling it the right thing but it doesn't respond to the disengage order. This is a common failure mode.) Your highway mileage will be poorer but it'll save the transmission repair.

Talk to an expert (garage or home mechanic) or research your car to see what it takes to repair that problem.

In the mean time, do what I did until I pulled the transmission. Get the car moving up to enough speed that it won't stall. Do this by starting it, popping into Drive, let it stall but coast (don't stop it), start in Neutral, then Drive again, stall, keep coasting, Neutral, start, Drive, etc until it has enough speed so it doesn't stall. This is not a good way to do things. It is hard on the starter, the transmission, the CV joints, whatever. But it will get you home. Also, try not to stop. If the light is red, slow way down ahead of time. Keep the speed just high enough that you don't stall.

Wish I was more help.

PeteC

Answer 2

you have a malfunctioning or failed torque converter snatch. The torque converter is the link between the engine and the transmission. The torque converter snatch completely locks the torque converter whilst the engine is as much as complete working temperature and you're at highway velocity. The torque converter snatch is controlled with the aid of the engine administration computer. If it is malfunctioning, there will be a topic code. regrettably it is expensive to repair a torque converter snatch. maximum possibly extra advantageous than this previous motor vehicle is well worth. there is the thank you to disable the torque converter snatch. i do no longer comprehend precisely how. there's a connector with 4 wires linked to the front of the transmission. a sort of wires controls the torque converter snatch. regrettably, i can't show you how to comprehend which cord it is. notwithstanding with a splash learn you will desire to be waiting to discover and clip the spectacular cord. With the torque converter snatch disabled you will no longer get particularly as stable gasoline mileage on the line. notwithstanding it relatively is going to likely be lots extra low-priced than spending $2000 on transmission maintenance. See the link below for an marvelous article pertaining to to the GM torque converter snatch.

Answer 3

It could be any number of things, like a vacuum leak, or tranny is casuing the problem, or you need a fuel filter replaced, or even a tuneup. Hope these help some. Good luck.

Answer 4

most of the time the egr is blocked depends on what the vehicle is

Answer 5

carb. could need ajusted up to idel a little higher are timing could be off

Answer 6

One word: computer! My sister's car did that and a sensor/processor had died.

Answer 7

probably something with your vacuum hose (leak or crimped, maybe)