I just put a 4r70w transmission out of salvage yard in and when I drove it after install my speedometer goes an hits a 100 mph and I am only doing about 30. I believe it is tripping the governor because it shuts down until needle drops below 99 mph. I have replaced speed sensor in differential and rear of transmission. It never did this with old transmission.
have the same problem?
Friday, September 8th, 2017 AT 7:32 AM