1994 SL2, automatic transmission with 75,000 miles; purchased with transmission banging issue. We have replaced the valve body with a remanufactured valve body, it has sonnax pressure valve update. We replaced the input shaft nut, which wasn’t loose and tighten the output shaft. We added Lucas Transmission Treatment and new filter and fluid. We replace the engine control temperature switch, which made the coolant fan actually work. We replaced the serpentine belt, the wires and plugs. We cleaned the grounds on the engine & fender well and found a vacuum line off. We are still having the same issue with the transmission banging between all gears. The engine runs smoothly & idles great and all other aspects seem fine. After driving a while, the “service engine soon” light comes on and the transmission works perfect. As long as the light is on, the transmission is fine but once we shut the car off & restart it the light goes off, the transmission bangs again. When you jump across the diagnostic terminals it does not throw any codes.
have the same problem?
Sunday, November 27th, 2011 AT 10:20 PM