Transmission wont shift out of first

Check the sensors on the transmission. May just be corrosion on the sensors or it may be a faulty sensor. Also, the torque converter bearing may have went bad due to the running it on low transmission fluid.

let transmission shop do pressure test and diagnostic check.many things will cause transmission not to shift right.could have faulty over drive solenoid.faulty VSS sensor it controls shifts. could have faulty TPS sensor or TCM.the first and second shift valves or solenoids bad your transmission is electronically control many things will cause problems the transmission shop use scanner to check out all shift solenoids.the older transmissions use modulator valve and governor valve control transmission shifts but the newer transmissions shifts control by TCM and ECM.

You have valves inside the transmission and electronic controls inside the transmission. When cold, valves do not work because the fluid is too thick. Once warm the fluid thins out and allows tranny to shift OK. You can burn your tranny up by not letting it warm up.

any codes in diagnostics? was pump checked for proper pressure?

Greetings Idpeters:
Please check your transmission fluid level. After the engine is warm pull the transmission stick and make sure the level is close to the full line and that the transmission fluid is red and not brown. You may have to change your transmission fluid and screen. If you plan to do it yourself I can advise you on how to change it step by step or you can take it to a transmission shop or dealership for a transmission tune-up. Good Luck

Ford Explorers are nice, but are commonly known for the trannsmssion to fail, I know becuase I know of people who also went through this tranny problem, Get it fixed and install a new tranny cool, heat is the number one cause for failure. I personally wouldn't get a Explorer from other peoples experiences.

change fluid an filter, if thats not yer problem ya got tranny problems ya need to get checked out by a tranny shop

try some transmedic .put a little in tranny .try to take out some fluid add it in dont over fill transmission .put about a half of bottle in it. it wiil loosen those stuck shift valves.

it could be your torque converter or transmission shift linkage or even your transmission ecu check it following troubleshooting section in repair manual ex:haynes or chiltons

did you drop the pan replace the filter and add four to five quarts,If still a problem try doing a full transmission flush at a quick lube.
A transmission flush with Lucas trans tune up will probably fix your non shift issue, try this first before looking into a new tranny !