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Yes, the speed sensor is really easy to get to after you jack the car up. The trans. computer is detecting something is wrong and puts the car into "limp in" mode. I've seen alot of these speed sensors go out on the Chrysler products.
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You don't give me much information to work with. However, 1st, look at the engine mounts. You may have a broken mount. This will make it feel like the transmission is shifting hard. Other than that, there is only a few things that will cause this. The speed sensor tells the computer when to shift the shift solenoids. It may not be "seeing" a quality signal. If this is the case, the speedometer will be bouncing too. Last idea is that it is skipping a gear. Starts in 1st, should go to 2nd at about 10 MPH. 3rd at 25 to 30 MPH. And, if you have a Overdrive transmission, it should go into overdrive at around 45 to 55 MPH. If it is skipping 2nd, it will engage 3rd at a high engine speed, and will feel like a sudden slam into gear. If this is true, your transmission needs some work. Hope this all helps. Good Luck.
Run the fault codes to see if the TCM ( transmission control module) is faulty or servos have failed . have a pressure test done on the box to check operating pressures for the clutch packs and bands.
Hello there, One of the problems Jeeps do have is Transmissions. It is very typical of the sensors and solonoid packs to go bad, Also Jeeps as well have well know problems with the computer causing transmission issues as well.
I suggest taking it to a shop other than a parts store they are great for basic info but a repair shop can actually look at what each sensor is doing in real time.
You are on the right track and I would most definetly address this asap rather than causing internal transmission problems.
this code is a transmission code and has a few different tranny sensors that is reads. you could just be low on tranny fluid or is could be the tranny axle speed sensor. odds are if its running fine now it is just low fluid but you could look into the sensor after that. the sensor is what tells the truck when to shift so thats could be why it went up in rpms if the sensor went out bacause then it would know exactly how to shift.
Take your car to a Chrysler dealer shop and have them update the transmission program.As your tranny wears it loses it shift point and stutters between 40 - 45 mph looking for the right gear to change to..Had same problem in 94 Concorde and 94 T&C minivan.Reprogramming tranny fixed both cars.
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