Question about 1999 Dodge Ram

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I have a 1999 Dodge Ram 1500, 5.2L automatic. After a few minutes of driving the OD lites comes on and it downshifts and a couple minutes after the Trans Temp lite comes on. I have checked the transmission cooler and the transmission with a digital thermometer and the temp is never over 120 degrees. This happened after installing a used transmission. No other problems, no hard shifting, no slipping. I have driven on some long trips with no problems. Any chance of it being TCM/ECM.

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I had the same trouble with my 1999 4x4 and it ended up being the governor pressure switch inside the tranny. Just drop the pan and its only a couple of bolts and unplug the wires just above the pan so dont bother to take it to a shop if you can change the fluid yourself you can change this with no problem and dont have to pay someone to do it for you. It should only be about 140.00 or so for the part at the dealer.

Posted on May 15, 2010

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It still sounds like you have a restricted cooler. Does it have just one in the radiator or does it have a secondary one in front of the condenser. Have you checked the cooler flow? At least one quart in 20 seconds. Also 46re transmissions only flow in drive unless you update the valvebody.

Posted on May 15, 2010

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