I bought my second mustang, a 2001 GT with a 4R70W, the first is a base 3.8 with a 4R70W, so I am familiar with these trannies with high miles. My dilemma is figuring out what is wrong. Here are the symptoms of the GT tranny. I found out a little more about the problem bring it home. We bought the GT knowing the tranny needed to be replaced or so we were told.Its problem stems from a teenager coupled with a GT and an automatic transmission, I am sure you can imagine what was done to this transmission in the hands of a young adult.
Anyway we were towing it home to Death Valley from Pahrump NV, when we were outside of the boundary of the park, I had a bright idea of coasting into the valley, it drops almost 4000 feet in 12 miles by the time you reach Furnace Creek. We got the car ready to coast and I started it since it is easier to break and steer with the engine running. Once the car got rolling at about 10 mph, I figured "what the hell" and put into drive from neutral. Low and behold, the tranny has a little bit of life left in it. I could feel it shift gears, it was faint but it was shifting. When I pressed on the gas pedal it would actually go, I got it up to about 70 but I had to do it gracefully otherwise if I went above 2K RPMS the tranny would slip out of gear. I got all the way through Furnace Creek and was able to get the car over some small hills. Once we got to the big hill to the house I had to pull over and we had to finish towing it to the house.
Does anyone have a good idea is wrong with the tranny, does it need an entire rebuild or would it be something less, such as a the torque convertor or the valve body?
Thanks
JS
Anyway we were towing it home to Death Valley from Pahrump NV, when we were outside of the boundary of the park, I had a bright idea of coasting into the valley, it drops almost 4000 feet in 12 miles by the time you reach Furnace Creek. We got the car ready to coast and I started it since it is easier to break and steer with the engine running. Once the car got rolling at about 10 mph, I figured "what the hell" and put into drive from neutral. Low and behold, the tranny has a little bit of life left in it. I could feel it shift gears, it was faint but it was shifting. When I pressed on the gas pedal it would actually go, I got it up to about 70 but I had to do it gracefully otherwise if I went above 2K RPMS the tranny would slip out of gear. I got all the way through Furnace Creek and was able to get the car over some small hills. Once we got to the big hill to the house I had to pull over and we had to finish towing it to the house.
Does anyone have a good idea is wrong with the tranny, does it need an entire rebuild or would it be something less, such as a the torque convertor or the valve body?
Thanks
JS