transmission help
#1
transmission help
i have 1999 3500 automatic.the transmission will go from high down a gear at about 45 mph. somebody told me it was the ground wires,so i cleaned them and that helped for a while.It keeps doing this ever 3 days i can take the ground loose from the passenger side and clean it and it will help here again for 3 days.i have even run a ground from each battery to each other with no results. does anybody else have this problem can you please help me Thanks
#2
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Which grounds are you cleaning ?
There are a few of them , with this issue , if it is ground related , you need to know where the computer grounds are , the computer controls the lockup & some other shifting , but the computer needs to see a number of things in order for it to make the correct decisions , things like the brake pedal switch .
You need to do some diagnostics 1st before replacing anything , but finding all grounds , cleaning & putting something like dielectric grease on to keep in good condition , is always a good thing to start with .
There are a few of them , with this issue , if it is ground related , you need to know where the computer grounds are , the computer controls the lockup & some other shifting , but the computer needs to see a number of things in order for it to make the correct decisions , things like the brake pedal switch .
You need to do some diagnostics 1st before replacing anything , but finding all grounds , cleaning & putting something like dielectric grease on to keep in good condition , is always a good thing to start with .
#3
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Take a Ignition condenser and wire from alternator output terminal to ground. Or you can buy the $75.00 kit from some of the tranny suppliers. You may have a alternator with the slip rings dirty or weak condenser inside alternator. Ask me how I figured it out...
#4
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i have 1999 3500 automatic.the transmission will go from high down a gear at about 45 mph. somebody told me it was the ground wires,so i cleaned them and that helped for a while.It keeps doing this ever 3 days i can take the ground loose from the passenger side and clean it and it will help here again for 3 days.i have even run a ground from each battery to each other with no results. does anybody else have this problem can you please help me Thanks
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