Re: pushbutton transmission

Posted by Mr.Pushbutton  On 2007/4/9 22:35:25

Bob, what you had happening was a new one for me. I put the motor back on the actuator to see what was wrong. I, like you had shifting in L,H & D, nothing in P,R,N on my test board, just like we talked about on the phone. I poked around with my test light and found that there was power going to the (+12V) bus on the console-keys (through your harness, just like we talked about on the phone) but no action. This had me puzzled for a moment. I checked each finger and when the corresponding button was pushed, I got power @ that finger, like there should be, but no action. I pushed on the finger with my test light probe and got action, it jumped to life. I tried the other two non-operational fingers and they too jumped into action. I removed the finger bridge and inspected it and found two things:
1)The left hand threaded hole that is meant to keep the fastener holding the bridge firmly in place was stripped, you could wiggle the bridge up and down at that end--this isn't supposed to be like this.

2) the fingers for P,R,N were badly distempered and not exerting forcce against the (moving) contact segment. At some time in the past a condition exsisted where those fingers came into contact with ground. When this happens they will glow orange, like a stove element and distemper.

The photos tell the rest of the story.

One thing I should mention is that when a unit is in this kind of condition, it's in everyone's best interest to take it off of the car, send it to either Kanter, Sandy Chirco or me, whomever you like best and get the full work up. I can service one on the car and make it as reliable as one I bench-service, but I can't give 25 years of experience over the phone.
After this full go through the car will never leave you stranded at Dairy Queen in Reverse.

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