1998 Dodge Ram 1500 5.9L 4WD Vacuum Lines
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Electrical plug
I have a 1998 Dodge ram 1500 4x4 with the automatic transmission I'm trying to figure out what the electrical plug is on the end of my transfer case and where the wires run to and I can't figure get out there's nothing even in the Chilton or Haynes and repair manual repeat the plug is at the end of the transfer case I think it's like a three-pong plug and it's oval shape Mario and whatever it plugged into on bolts from the transfer case
Champion
Joined: Sep 2012
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From: Central VA
I have a 1998 Dodge ram 1500 4x4 with the automatic transmission I'm trying to figure out what the electrical plug is on the end of my transfer case and where the wires run to and I can't figure get out there's nothing even in the Chilton or Haynes and repair manual repeat the plug is at the end of the transfer case I think it's like a three-pong plug and it's oval shape Mario and whatever it plugged into on bolts from the transfer case
The information you're looking for will definitely be in there.
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Hey
treat the vacuum lines like water. if the result is not correct at the end point (cad), then either start at the source and follow it forward step by step, or start and the end (cad) and follow it backwards.
prove you have vac at the engine.
prove you have vac at the t-case.
remove the vac switch from the t-case and test it. note the 4 ports and the keyed connector. it can only go one way. one line is input, one is vent. one is 2wd output (inside button not depressed). other is 4wd (button pressed). bench test it. reinstall switch and move to the cad.
as said the steel vac lines along the transmission cross member get torn up. you can replace with anything. brake line, fuel line, copper line, aluminum, rubber hose.
prove you have vac at the engine.
prove you have vac at the t-case.
remove the vac switch from the t-case and test it. note the 4 ports and the keyed connector. it can only go one way. one line is input, one is vent. one is 2wd output (inside button not depressed). other is 4wd (button pressed). bench test it. reinstall switch and move to the cad.
as said the steel vac lines along the transmission cross member get torn up. you can replace with anything. brake line, fuel line, copper line, aluminum, rubber hose.
How do I know which one to hook the vent vacuum line to the two-wheel drive to do I run them all the same to the ones that's going to the front axle I run all five lines together to the two? I'm so confused
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From: Clayton MI
The red and black go to the front axle. The outboard port on the cad diaphragm gets vacuum in 2wd, inboard port in 4wd. Green line is a vent line. It terminates up behind the engine somewhere. Whatever is left, should be source vacuum from the engine.
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So where does vent line run? And the check valve?
I got two free lines coming off the rear actuator where they're transfer case is and then one free one on top of the where the vent is does it matter where the two of the actuator goes. On the diagram the circle things to rear actuator right?
I got two free lines coming off the rear actuator where they're transfer case is and then one free one on top of the where the vent is does it matter where the two of the actuator goes. On the diagram the circle things to rear actuator right?
Last edited by 98dodgeramjames; Oct 15, 2024 at 11:44 AM.
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All right I know where the other lines go in my index and thumb where does that line go to from the switch on the transfer case