Tranny Problem
OK i have a 91 cummins 2500 4x4 and right now there is nothing rong withit butt the fact that it wont shift into 4th gear i dont know what it is and would love to get some good advise:argh:
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when ya shift into other gears does it slip out sometimes?
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sounds like a shift fork bind to me
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sounds like you have the same problem alot of us are having. bad top cover. read the thread getrag woes or shift tower all jacked up
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I merged both your threads into one here...
I'm gonna guess that its a auto... You didn't say but if it is... First try this... https://www.dieselbombers.com/1st-ge...ensor-tps.html Check the wires going into the side of the tranny, make sure they are connected. On is 12v and teh other is a ground. When the computer calls for OD it grounds the circuit. If the wires are hooked up with teh truck running use a test light to determine which wire is teh 12v hot wire, un hook the OTHER Next wire in a temporary swicth to the tranny that grounds when turned on. Go for a ride, get to 3rd gear and ground teh circuit, see if it hits OD. Also do you have cruise? Is it working? Is the alternator charging? I ask that because it will help tell if teh computer is shot. |
Originally Posted by 1st genny nut
(Post 469582)
when ya shift into other gears does it slip out sometimes?
---AutoMerged DoublePost---
Originally Posted by RSWORDS
(Post 469864)
I merged both your threads into one here...
I'm gonna guess that its a auto... You didn't say but if it is... First try this... https://www.dieselbombers.com/1st-ge...ensor-tps.html Check the wires going into the side of the tranny, make sure they are connected. On is 12v and teh other is a ground. When the computer calls for OD it grounds the circuit. If the wires are hooked up with teh truck running use a test light to determine which wire is teh 12v hot wire, un hook the OTHER Next wire in a temporary swicth to the tranny that grounds when turned on. Go for a ride, get to 3rd gear and ground teh circuit, see if it hits OD. Also do you have cruise? Is it working? Is the alternator charging? I ask that because it will help tell if teh computer is shot. |
if you cant even jump it your battery is most likely bad, and acts like sponge when you try and jump it
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All things considered, there's a big difference between slipping and not shifting at all. Does it pick up OD, but then freewheel? Or just not pick up OD at all? Elecrical probs won't make it slip, but will make it not shift. Your OD is spring apply and pressure release. A weak spring will cause OD to slip, and when bad enough, fail all together, which will also affect reverse. If all gears have failed, there's a chance enough clutch material has your VB plugged. armchair troubleshooting prety much stops there other than the battery of pressure tests you can run. The above applies only to your "slipping" condition however. If you have an electrical situation that is preventing OD from picking up entirely, then move to elctrical troubleshooting as some have stated. BUT, an electrical problem WILL NOT prevent the bottom 3 forward gears and reverse from working. It IS a hydraulic, mechanically governed transmission that requires no ECM input other than for OD, and in later years TC lock-up. Good luck, you'll get it figured.
Chris |
My truck doesnt go into od butt it does fo into reverse an all the other gears just fine could it be my shift solinoid or what thanks for the input:argh:
---AutoMerged DoublePost--- NAd i do have cruse and it isnt working butt my alternator is :ouch: |
Originally Posted by Levi Miller
(Post 484175)
My truck doesnt go into od butt it does fo into reverse an all the other gears just fine could it be my shift solinoid or what thanks for the input:argh:
---AutoMerged DoublePost--- NAd i do have cruse and it isnt working butt my alternator is :ouch: |
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