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Need and ACD expert

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Old May 30, 2021 | 02:00 PM
  #16  
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From: corpus christi, TX
Originally Posted by Biggiesacks
I'm no acd expert but I have done a lot of troubleshooting. Since you said this started after you serviced the t-case, have you looked in to what kind of troubleshooting you can do on the t-case? 3 different pumps same result..... I mean sure its possible but seems likely the problem is somewhere else. Being that the only other thing you touched was the acd... seems like things are pointing in that direction.
yeah all of this happened after I pulled out the tcase and broke the hydraulic line. The car didn’t have a motor in it for a few months so the or rings dried out. But I have bleed and bleed till zero bubbles come out and still have the 3 lights
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Old May 30, 2021 | 02:02 PM
  #17  
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From: corpus christi, TX
Originally Posted by kikiturbo
the ACD part in the transfer box is relatively simple. It is an aluminium piston with 2 O rings.. If the clutch pack wears down too much, or if one of the O rings fails, the ATF fluid that is coming from the ACD pump will start leaking into the transfer box.. eventually leaking out from the vent. That is the only ACD issue that I can see.

From what I have seen in the OP video, I would say that there is some sort of mechanical problem in the pump itself. He needs to take off the motor, see if the rotor turns over freely with the motor off. Check, the motor, if it turns over. I think the pump needs to get out of the car and get tested on the bench...
so I can bleed the tcase and see if the fluids have mixed that’s easy enough.
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Old May 30, 2021 | 10:53 PM
  #18  
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not bleed, but let the fluid out of the Tcase
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Old Jun 1, 2021 | 12:09 PM
  #19  
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From: corpus christi, TX
Originally Posted by kikiturbo
buddy's sounds great... yours doesnt..

plate orientation looks ok, but I will check.. it has been some time since I rebuilt one..
I need some verification on which way the plate abs housing go I know the groves need to follow each other with one is correct? Fatter part pointing up or down?

also I tested the gear with a flat object they spin Freely




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Old Jun 7, 2021 | 04:56 PM
  #20  
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From: corpus christi, TX
Originally Posted by kikiturbo
the ACD part in the transfer box is relatively simple. It is an aluminium piston with 2 O rings.. If the clutch pack wears down too much, or if one of the O rings fails, the ATF fluid that is coming from the ACD pump will start leaking into the transfer box.. eventually leaking out from the vent. That is the only ACD issue that I can see.

From what I have seen in the OP video, I would say that there is some sort of mechanical problem in the pump itself. He needs to take off the motor, see if the rotor turns over freely with the motor off. Check, the motor, if it turns over. I think the pump needs to get out of the car and get tested on the bench...
i bench tested both pumps. The louder noise pump built 155psi on the Bench test also tested the solenoid and saw it click also tested to make sure fluid came out the hole the hydraulic line goes into all that checks good . Tested 4 different pressure sensors for ohms two were at 4.7 one at 4.5 and one at 4.9.

put the 4.7 sensor on the pump. Still have the three lights after rigorous bleeding. So the pump is not the issue. Possibly a pressure sensor, or the tcase or electrical.
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Old Jun 7, 2021 | 06:05 PM
  #21  
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Edit: I didnt read the whole thread...

Last edited by V.8MR; Jun 9, 2021 at 04:01 PM.
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