Question about 2000 Jeep Grand Cherokee
Transmission will not shift to higher gear till engine warms up.had codes checked at parts store,( front right and left and right rear wheel speed signal malfunction , electronic control unit internal malfunction ,under voltage ,and multiple misfire cylinder 5 and 6
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Posted on Jan 02, 2017
the output spped sensor is on the drivers side rear of the transmission case..its a 2 wire connector..the wires are dark bluewith a black tracer and light green with a white tracer
Posted on Oct 01, 2008
The Transmission Control Module also turns on the check engine light. However the parts store won't be able to read these codes since all they read are the Engine DTC's. More then likely your codes will come back to a Governor Pressure Sensor and/or Switch. If they do then remove the pan and replace both of those. Simple fix, should be able to be done in about an hour or so. Might as well go ahead and slap a speed sensor in while you're under there. Should be able to do it yourself for less then $200.
Posted on Dec 20, 2009
check all the fuses before you do anything else. After all a fuse provides power to the electronic box that controls the transmission. Other than that I would not advice on a more complicated troubleshooting since there is no way for you to test a bad transmission computer, even mechanic shops don't know how to test them. The only thing they would do is slap a known good one and see what happens.
Posted on Dec 27, 2009
You always check transmission fluid with it running and in park,If your dip stick has a place on it for cold use it cold,Other wise it should be on the full mark,you might want to look under your jeep for any new leaks!
Posted on Dec 29, 2009
Testimonial: "thanks alot, thats what I thought, no leaks that I can see, I guess they didn't fill it all the way back up"
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The engine and automatic transmission in this vehicles drive train are fully electronically controlled by a computer called the PCM (Power Train Control Module). Whenever a problem like this occurs the computer stores a record of the problem (there are of course some exceptions to this, like the fuel pump, engine coolant temperature sensor and MAF sensor for instance) in the form of a fault code in its memory, to read these fault codes you must have the systems memory scanned with a special tool. Once the fault code(s) are read you then must perform the appropriate diagnostic testing to find and resolve the problem(s) DO NOT REPLACE ANY PARTS UNTIL A TRAINED TECHNICAIN HAS DIAGNOSED THE PROBLEM TO AVOID SPENDING YOUR HARD EARNED MONEY ON PARTS THAT MAY NOT CORRECT THE PROBLEM
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