Question about 1997 Dodge Ram 2500 Club Cab

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97 dodge 2500 4x4 will not engage

Had trans done last year and the 4 wheel drive worked before the new trans went in. checked vac lines and linkage. also the light on dash for the 4x4 does not come on.

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  • sgtgenman Dec 15, 2008

    i have the same problem with mine. where is the switch that engages the vacuum ??

  • Anonymous Dec 18, 2008

    My light to indicate 4x4 on or not also won't come on and my 4x4 was working fine until I brought it in to the dealership last winter. They deny anything to do with the situation, but Ijust want it to work!

  • jessyprx7 Jan 01, 2009

    Yeah me too. I just bought this truck and found that my vaccum lines had melted on the exhuast manifold so I had to fix that first. I am tryin to figure out whether both the lines comin from the engine to the trans are both supposed to be manifold vaccum or if one is supposed to be a vent line. I put a new diaphram on the hub lock so I know it is good.

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On the axle there is a vacuum Actuator that engages a collar on the axle that engages the four wheel drive if the axel splines are worn or havent been lined up they will get burred and won't allow the collar to line up. You can remove the actuator and see the splines and determine if they need to be fixed.

Posted on Dec 02, 2008

  • porter1260 Dec 03, 2008

    Before tearing anything apart make sure that your vacuum lines are actually working. It might be just the switch that engages the vacuum lines.

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