1992 jeep Cherokee 4x4 4L I6 transmission will not downshift out of overdrive while running in 4th gear at highway speeds when accelerator is depressed It will however downshift into third if you pr?

Answer 1

i have a 1992 jeep Cherokee with shifting problems and read this online . I replaced the Throttle poition sensor tonight and now mine is working normal also .Read thisI have a 1992 Jeep Cherokee with the 4 liter engine and the 2WD AW4 transmission. I bought it used. After driving it for a couple months, the transmission began to shift only after getting the engine up to 4,500 RPM. I could get it from first to second, and from second to third, but getting it to fourth was impossible.I took it to a local transmission shop and they checked it out. They called to say they needed to open it up. They arranged for us to get a rental car, which they would reimburse after the car was done. They called two days later and wanted $1,900.00 to rebuild the transmission. The mechanic said he checked for recalls and service bulletins and found none.I decided not to have it repaired, and brought it home, after paying $400.00 plus $300.00 in car rentals. I parked the Jeep in the driveway. After a while, I got curious and started doing research on the web.I discovered a service bulletin on my Jeep on "Alldata.com", which indicated "A/T - Throttle Position Sensor". I don't subscribe to the site, so I could only see this header. I then did a search on Throttle Position Sensor and found a number of sites that described numerous transmission problems attributed to this sensor.I took the Jeep to a Chrysler dealer near me, and purchased the part for $69.00. I installed it myself, and the Jeep shifts beautifully, better than when I bought it. I called the shop back, because they told me they took photos of the transmission and I was anxious to see them, and to show them to another mechanic to see if they had been honest.