Re: Possible speed sensor or transmission issue.
Originally Posted by paidduz
Sounds like you got a lot of good advice already. New to site because I came upon this very page when I typed in my same issues with my 2004 Grand Cherokee 4.7 yesterday. I investigated the speed sensor issue on line and asked a few engineers that I work because the one worked at Chrysler on this trans. He wasn't as formative as the other engineer that worked for Eaton. He told me that there is no doubt that it is the speed sensor, when he worked for Eaton they were trying to design a new one for Chrysler. They refused to recall the vehicle and decided to fix the issue as the customer comes in with the problem. Well I won't bore you with the details of why its the sensors. But I took his advice and my jeep is perfect. The cost of the speed sensor at Autozone was around $20 for each. The trans fluid look like tomato soup with milk in it. So we decided to drain that and change both filters as well. Jeep was lunging forward for a while...didn't think much of it, as it's up there with the mileage 160K. Until after being in traffic...I went to take off with the rpms going up to 3,000 and with no movement from the vehicle. It eventually did go into gear then I managed to make it to my work with only 3 miles after it started. And from there we had it towed home. After the sensors were installed we test drove it and I was in freak'n shock. It's like it glides when it goes into gear. I feel stupid not looking into this earlier I love my jeep. It's been very good to me I drive a lot a miles everyday to work, and these Michigan winters can be a &itch to drive in. Good luck to you there easy to change...you may even find a You Tube video showing you how to do it. I read on another site the stealerships are charging over $300...$100 of that to put the code reader on it. Oh forgot to mention...NO CHECK ENG LIGHT CAME ON, and NO CODES.
Thank you so much, sounds like my problem but less extreme. Tons of clunking/ rough up and down shifts. I think I'm going to order a speed in and out sensor
2001 Silverstone Jeep Grand Cherokee Ltd.
3 percent tint (5 percent over factory 20), 3 Inch Kolak Exhaust (DMH electric cutouts, Magnaflow Cat, Flowmaster 50 series, and Magnaflow tip), K&N FIPK, Yellowtop Optima, Shorty Antenna, 2 12' Type R @ 2000 watts, Bypassed Alpine D106, Upgraded tweeters, Black 3rd Gen Halo Projectors and Fogs, 6000K HIDs, Quad Taillight Mod, Overland Whiteface Cluster, Overland Woodgrain Steering Wheel, Fully Debadged, Roofrack Delete, DRL Disabled, Parking Light LED (in process...),
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