carmike692000
New member
Ok, in the last week my XJ's developed some kind of a problem somewhere in the drivetrain. It's a '95 XJ with 147,7xx miles on it, and I have to sheepishly admit that though it's been a DD, paved surface-only car, I've DOGGED it hard a LOT.
So, anyway, sometime last week I experienced my Jeep doing SOMEthing that I would assume is the transmission slipping. Thurs/Fri is when it first did it. It was slight and subtle, and I can't really remember exactly what it felt like. However, I did also notice when I had my window down that during heavy acceleration, I could hear this dull popping, thumping sound like something was constantly going through the binding/freeing itself cycle coming from under me from the drivetrain.
Then I didn't feel a THING in it driving it twice for about 40 minutes each that Saturday.
Fastforward to yesterday and today. You know how when you're in 4hi or just have it strung out in the RPM range and you let off the gas, there's a jerk as the slack is taken out of the drivetrain and then compression braking commences? Well, Monday, just cruising down the highway very sedately at a constant 65mph, I experienced THAT feeling. Only a bit worse. And sometimes it would do it once. Sometimes about 4 - 7 times in a row, back to back, all within about 10 - 12 seconds.
It did the same thing on the way to school today. Fearing it was the transmission slipping, it suddenly dawned on me that it MIGHT be the torque converter slipping or locking/unlocking erratically. However, it then proceeded to do it in the city going a constant 40mph. During that ~25min commute it probably did it 27 - 33 times.
So, to recap, since this is a rather long post:
I had this binding sound under acceleration ONE day that I've not heard since (though I don't think I've had my window down since then).
Then it's gotten so it jerks at a constant speed, and it's done it from 40mph to 65mph, and the vehicle's temperature has no influence on it.
Dad just drove it tonight and says it's not the transmission, really doesn't think it's the engine, but suspects it's the transfer case. The transmission has never given trouble before, still shifts just fine, and, while being worn from my constant aggressive driving style, the engine uses hardly any oil and runs good.
Oh, and the transmission fluid is up to level, clean, and smells just fine.
Thank you SO MUCH for reading through such a long post.
What do you think it could be?
So, anyway, sometime last week I experienced my Jeep doing SOMEthing that I would assume is the transmission slipping. Thurs/Fri is when it first did it. It was slight and subtle, and I can't really remember exactly what it felt like. However, I did also notice when I had my window down that during heavy acceleration, I could hear this dull popping, thumping sound like something was constantly going through the binding/freeing itself cycle coming from under me from the drivetrain.
Then I didn't feel a THING in it driving it twice for about 40 minutes each that Saturday.
Fastforward to yesterday and today. You know how when you're in 4hi or just have it strung out in the RPM range and you let off the gas, there's a jerk as the slack is taken out of the drivetrain and then compression braking commences? Well, Monday, just cruising down the highway very sedately at a constant 65mph, I experienced THAT feeling. Only a bit worse. And sometimes it would do it once. Sometimes about 4 - 7 times in a row, back to back, all within about 10 - 12 seconds.
It did the same thing on the way to school today. Fearing it was the transmission slipping, it suddenly dawned on me that it MIGHT be the torque converter slipping or locking/unlocking erratically. However, it then proceeded to do it in the city going a constant 40mph. During that ~25min commute it probably did it 27 - 33 times.
So, to recap, since this is a rather long post:
I had this binding sound under acceleration ONE day that I've not heard since (though I don't think I've had my window down since then).
Then it's gotten so it jerks at a constant speed, and it's done it from 40mph to 65mph, and the vehicle's temperature has no influence on it.
Dad just drove it tonight and says it's not the transmission, really doesn't think it's the engine, but suspects it's the transfer case. The transmission has never given trouble before, still shifts just fine, and, while being worn from my constant aggressive driving style, the engine uses hardly any oil and runs good.
Oh, and the transmission fluid is up to level, clean, and smells just fine.
Thank you SO MUCH for reading through such a long post.
What do you think it could be?
