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#1 | |
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Registered User
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Changed diff fluid, now jerking!
Ok, just a half hour ago I sucked out the old diff fluid in the front and back of my GC (going to pop off the diff covers and change completely this summer). I put 80w90 in the front, and 85w140 in the back. Now I took it for a drive around a couple blocks and it was all good for 2 or 3 blocks. It then started jerking when taking off from stop signs. Then on the hill on the way back there was alot of jerking and the engine killed. I got it started again and brought her home, jerking at the 2 or the stops signs on the way back. What did I do?
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2000 Grand Cherokee Laredo 4.7L V8 Quadra-Drive 1987 Wrangler 4.2L |
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#2 |
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4.0 Piston Skirt Victim
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Its hard to say exactly but if I had to guess something just happened to fail at the time after you did the change. I really have no clue what it is, can you give a more specific description of whats going on, maybe some sounds, feelings, etc.
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WALTER |
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#3 |
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It doesn't seem to be making any sound. Just when leaving stop signs it will jerk and vibrate. Then going down the hill it killed the engine.
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2000 Grand Cherokee Laredo 4.7L V8 Quadra-Drive 1987 Wrangler 4.2L |
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#4 |
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4.0 Piston Skirt Victim
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Does it feel like the brakes are being applied on and off?
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WALTER |
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#5 |
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Registered User
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No, it's not the brakes. It feels like gears slipping.
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2000 Grand Cherokee Laredo 4.7L V8 Quadra-Drive 1987 Wrangler 4.2L |
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#6 |
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Registered User
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It has nothing to do with the diff oil change but must be something else. How is the transfer case atf level ?
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Cheers Steve Trained Professional Crack-pot Go RU & WVU Football Teams 94 Black Laredo 4-Liter with QuadraTrac (42RE trans & NP249 TC) 200,000 + miles purchased new 03 4Runner V8 (my wife's car) 94 Volvo 850 (my 16-yr old daughter's car) Five cylinder 88 Cherokee 2-door with 5speed manual 139K miles(deceased) purchased new |
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#7 |
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Registered User
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I bought ATF+4 to put in the transfer case but I don't have a big enough wrench to get the drain and fill plugs off. (Gonna borrow one from a friend).
Would lack of friction modifier in the rear diff cause jerking?
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2000 Grand Cherokee Laredo 4.7L V8 Quadra-Drive 1987 Wrangler 4.2L |
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#8 | |
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4.0 Piston Skirt Victim
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Quote:
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WALTER |
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#9 |
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Registered User
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It's just a vibration feeling until I get up to speed. No harsh bang.
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2000 Grand Cherokee Laredo 4.7L V8 Quadra-Drive 1987 Wrangler 4.2L |
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#10 |
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Registered User
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Ok, went to move it into the garage and it took a long time to start. Like 20+ seconds. What the hell is going on?
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2000 Grand Cherokee Laredo 4.7L V8 Quadra-Drive 1987 Wrangler 4.2L |
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#11 |
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Registered User
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check to see if any engine codes were stored.. like a misfire or something.
Mess with anything else while you were under there?
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- Joe - '95 Jeep Grand Cherokee Laredo I6 4.0L 242TC - Extreme Engineering 2" Front Lift/1.75" Rear Lift - ES9000 Shocks + JKS BPEs Moog Cargo Control Springs Magnaflow Converter - Dynomax Muffler 235/75/15 AT Uniroyal Liberator Tires |
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#12 | |
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Registered User
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Quote:
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2000 Grand Cherokee Laredo 4.7L V8 Quadra-Drive 1987 Wrangler 4.2L |
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#13 |
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Registered User
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Anybody? Would the lack of friction modifier cause the vibration? Would the vibration cause the engine to kill?
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2000 Grand Cherokee Laredo 4.7L V8 Quadra-Drive 1987 Wrangler 4.2L |
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#14 |
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Registered User
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humor us and check the codes..
jerking when accelerating sounds engine related not driveline related unless you making sharp turns
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- Joe - '95 Jeep Grand Cherokee Laredo I6 4.0L 242TC - Extreme Engineering 2" Front Lift/1.75" Rear Lift - ES9000 Shocks + JKS BPEs Moog Cargo Control Springs Magnaflow Converter - Dynomax Muffler 235/75/15 AT Uniroyal Liberator Tires |
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#15 |
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Registered User
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I bought friction modifier from the dealership. Do I put the whole 4oz bottle in the rear diff?
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2000 Grand Cherokee Laredo 4.7L V8 Quadra-Drive 1987 Wrangler 4.2L |
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