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How do I tell what type of automatic transmission I have on my 1993 F-150? I have the overdrive push button on the end of the gear shifter. I am having some weird things happen with it. Sometimes it shifts really hard going into second gear. Sometimes shifting in the higher gears, the engine RPMs go way up to about 4000 and then all of a sudden the tranny will catch. Other times it works great! Any ideas?
You could have an E4OD or 4R70W(AODE-W). Both use all-electonic controls, so normal automatic transmission diangosis may not find your problem. Get a code scanner or have someone read diagnostic codes for you. Based on my problems with an E4OD, your fluid pressure is being regulated high in an attempt by the computer to compensate for another weak component in the transmission. Sometimes, just loose or dirty electrical connectons are the problem.
Could be the neutral safety switch. This switch also tells the ECM what gear you are in. I haqd to replace the one on my Windstar because it quit shifting all together. My freind had to replace one on his Sable because you could be driving down the highway and it would throw itself into low gear for no reason. Replaced the switch(located on the tranny behind the shifter linkage) and both are fine to this day. It was about $25 at Auto-Zone.
this weekend I changed the transmission fluid. it just might be internal but all the gears that do work shifts in nice and smooth have not actually drove the vehicle on the road yet though just 10ft forward and backwards.
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Adrienc9 Replaced the mlps on my 94 5.0 4r70w because it would go to neutral between 3-4 after going down hill(no load) and start to pull again (load). It didn't do it all the time and you couldn't make it do it. Usually most often when hot and pulling load (boat). Takes 10min and cos t $70. Just do it! PM
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