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Old 08-26-2010, 07:04 AM   #1
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97 TJ problem..cant move!

OK so 1997 TJ, 2.5" Rancho susp lift, 33x1250 BF Mud Terrain on 15x9 MT Classic II rims. 120k miles. Ok here is the issue. Last winter it gets COLD as hell here in NH. I go outside it was -6, warm my Jeep up, (auto trans) put it in drive, push the gas pedal, engine revs, Jeep doesnt move! Moved maybe an inch or two but then rocked right back into starting postion. Yes i checked to see if there was ice on my brakes. none. So, I put it in 4wd, same thing it moves 1 to 3 inches, when I let off the gas it rolls back to start point. Finally after about 10 min of this I gas it hard, hear a loud POP, and I am off and running. No issues, ran fine, went through gears fine etc. A couple days later, cold as hell again and the same thing happened AGAIN. In total it happened 5 times. ANY IDEAS?? Im lost!

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Old 08-26-2010, 07:50 AM   #2
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Don't know what exactly the problem is but mine does or did something similar, so hopefully someone else with more experience will respond.

When it got cold here, and when I say cold, I mean around 30 to 40 F, and I started it for the first time in the morning, it would not go. It was like it was in neutral or something. When it was REALLY cold, like snow or ice, once it wouldn't shift out of 1rst until it really warmed up. I had to drive it back into the yard until it got really warm.

I had my transmission fluid and filter changed last year to see if that would help, first easy/cheap thing for me to do since I am no mechanic and definitely do not know anything about transmissions

This past winter, I didn't really notice it or it wasn't as bad but we did have some snow and colder than usual weather and it did not do it or if it did not as bad. January and February are worse months and I only had it part of January and didn't get it back until spring.

I don't know if there is a switch or cylinder or soliniod that acts up when cold, but I have read others having this problem also.

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Old 08-26-2010, 10:02 AM   #3
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sounds like the fluid in the transmission might be getting too cold to flow as it needs to. but this is pure speculation, as it doesn't get that cold here and I have no experience with cold weathers effect on vehicles. might try either parking in a heated garage or some sort of heating device on the transmission, if that does it, then you'll know.

might be as simple as swapping the fluid out for fresh?
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Old 08-28-2010, 12:09 AM   #4
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It sounds like the E-brake was frozen. I live in Iceland for three years and it was hard and firm rule never use the E-brake for that very reason. Even if you have rear disk there is a small drum type break inside the rear disk. Just a posibility.
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Old 08-28-2010, 12:22 AM   #5
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It sounds like the E-brake was frozen. I live in Iceland for three years and it was hard and firm rule never use the E-brake for that very reason. Even if you have rear disk there is a small drum type break inside the rear disk. Just a posibility.
Got it in one. It's the same reason you never set the brakes on the trailer of a semi in winter. They freeze up and your out there beating on them with a 3# sledge to free them up.
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Old 08-28-2010, 12:25 AM   #6
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Something else that could be the problem...I think I read about it happening before...and if this is it, you're going to end up with a very expensive repair if you don't resolve it.

Water in your differentials...or possibly transmission. Which is then freezing. Causing the gears to jam instead of turn...until you send enough power through the gears to crush the ice. This could break something. If it's not a frozen e-brake or something simple like that... I would change your transmission fluid and the fluid in both differentials.

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