89 4L-6cyl AW4 203500 mi. Well maintained, gets 18-21mpg normally.
A couple of months ago I noticed the lockup was kicking in and out too much in the 35mph-45mph range while driving at a constant speed on very flat roads.
I took the Jeep to two former Chrysler, Jeep, Dodge transmission techs. We replaced the lock-up solonoid with an "after market" one. Every thing worked great for a week (couple of hundred miles.) Then one morning after warming up the torque converter no longer locked at all -- in any gear, at any speed.
There was no problem with the other gears and there was plenty of power delivered to the wheels.
This business of working until warm (10-20 miles) repeated every day. The Jeep had to THROUGHLY cool down (usually over night) before the lock-up would work.
The transmission tech used a scanner while I drove and said the scanner showed a signal was being sent to the lockup relay -- at least to where the scanner was connected. We replaced the solonoid with another one from the same supplier. (They have used this supplier for years and have not had problems with their stuff.)
This one worked perfectly for about a month (1200 miles) and then also begin to cease functioning after warm-up.
The tech does not think it is the solonoids but is not at all interested tracing problems.
Please help.
A couple of months ago I noticed the lockup was kicking in and out too much in the 35mph-45mph range while driving at a constant speed on very flat roads.
I took the Jeep to two former Chrysler, Jeep, Dodge transmission techs. We replaced the lock-up solonoid with an "after market" one. Every thing worked great for a week (couple of hundred miles.) Then one morning after warming up the torque converter no longer locked at all -- in any gear, at any speed.
There was no problem with the other gears and there was plenty of power delivered to the wheels.
This business of working until warm (10-20 miles) repeated every day. The Jeep had to THROUGHLY cool down (usually over night) before the lock-up would work.
The transmission tech used a scanner while I drove and said the scanner showed a signal was being sent to the lockup relay -- at least to where the scanner was connected. We replaced the solonoid with another one from the same supplier. (They have used this supplier for years and have not had problems with their stuff.)
This one worked perfectly for about a month (1200 miles) and then also begin to cease functioning after warm-up.
The tech does not think it is the solonoids but is not at all interested tracing problems.
Please help.