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NOT SHIFTING on 1992 Dodge Grand Caravan

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SHIFTS SOMETIMES AND WONT OTHER TIMES VERY ERRATIC WHEN IT WORKS IT WORKS WELL.CHANGED SPEED CONTROL SENSORS. AND TRANSMISSION CONTROL MODULE. I ORDERED TRANSAXLE AND SHIFT RELAYS.MY CHILTONS MANUAL DOES NOT IDENTIFY THE LOCATION OF THESE RELAYS.FRUSTRATED!!!
(1) Answer
This approach to repairing a problem will almost always lead to frustration and a huge waste of time and money. The issue needs to be diagnosed BEFORE replacing parts. There's a good chance you need a new transmission, so throwing parts at it is futile. Sorry to be so harsh, but you need to get this looked at by a professional. People study and work for years to understand how these transmissions work so they can diagnose them, they are the ones who should look at this.