Car stalls in gear

[G Winter]

If I underestand you right you are saying that the wheels never stop turning in gear. Can you stop the wheels completely in gear without killing the engine. If not then your converter isn't unlocking. If it is like the front wheel drives there is a wire you can unhook so it don't lock.

 

[tntcorvette]

If I underestand you right you are saying that the wheels never stop turning in gear. Can you stop the wheels completely in gear without killing the engine. If not then your converter isn't unlocking. If it is like the front wheel drives there is a wire you can unhook so it don't lock.

Anyone know of a wire I can unhook so the converter will not lock up for sure? If it is the transmission this is going to be a real pita............

 

[Vettelt193]

can you brake torque (put your foot on the brake and gas at the same time) and keep it running?

If you can't stop the rear wheels when it is on jack stands, you either have tranny or brake problems. if the tranny turns out ok, check out the rear brakes

 

[tntcorvette]

I tried to put my foot on the brake and keep the car running but it did not work. Car shut off. FWIW, it shuts off alot quicker in reverse than in drive.

 

[Hrtbeat1]

It sounds like the lock up solenoid. If you drop the pan and pull the filter there should be one wire harness (two wires) that lead from a pressure switch around the valve body and toward the rear. The actual solenoid is held by two 10mm (?) screws and slides up in a bore. There is a wiring schematic for bypassing the lock-up but I don't have it here. Also check the pressure switch, I had a bad one. With the pressure switch disconnected use compressed air at 20lbs and blow it in the fitting where it was attached to the valve body, it should hold pressure @ 20 lbs. If it is bad you will know quickly, the air pressure will blow tranny fluid all over the place so take that as a warning.


I'll see if I can find the wiring diagram for bypassing the lock up when I get home.

Hope this helps

 

[tntcorvette]

thanks for the feedback! I appreciate it. I'll keep a lookout for the bypass instructions.

 

[Hrtbeat1]

thanks for the feedback! I appreciate it. I'll keep a lookout for the bypass instructions.

I don't know if I was correct in my last post. Im not sure about actually bypassing the lock up. I may have confused this http://www.sallee-chevrolet.com/ChevyTransmissions/4L60_Installation.html with the lock up bypass. At the bottom of the page it describes the simple wiring to convert the lock up to a non computer controlled vehicle.

The switch is a normally open and gets a signal from the ECM to close, thereby engaging or disengaging the lock up clutch. It takes 12VDC to throw the switch. I'm not sure which pin the lock up signal goes to. I would think if you disconnect the 4 pin connector it would totally disable the lock up for your testing purposes.

You may try swapping your ECM out. Since it gets the signal to lock or unlock from the ECM maybe that part of the ECM went out. I've heard of stranger things happening.

Sorry I couldn't be of more help. Hopefully you find this useful, and I hope you get things all worked out.