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GLeidy
Dodge Dakota
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11/11/2003
21:48:48

Subject: 1989 Dakota 4WD indicator light
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I have just purchased an 89 dakota 4x4, auto trans. I noticed that the 4WD indicator light on the floor is always on even when I am in 2WD.

Is the 4WD indicator light always supposed to be on or is there a sensor (tranfer case?) that is bad?



jd
Dodge Dakota
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11/11/2003
22:47:11

RE: 1989 Dakota 4WD indicator light
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hey i have a 90 4x4 that used to do the same there is a switch with 2 wires mounted on the front diff towards the right hand side you will see a box right in the pass side axle tube this is where a vaccum actuator slides a coupler for transfering power to the front wheels and when the coupler slides to engage it pushes up on the switch turning on the light
now there could be 2 problems either the shift collar isnt moving or the switch isnt moving farr enough to open the contacts
my problem was luckly the later and to fix i removed the switch (unscrews) and ground down the effective length of the pin allowing it to move farther down to open the contacts
now if the collar isnt moving its a whole can of worms you need to check for vaccum leaks or binding or broken parts inside the shift box in the axle tube dont be afraid to take the cover off the box to see whats goin on in there
good luck
hope that helps
jd



GLeidy
Dodge Dakota
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11/16/2003
23:00:12

RE: 1989 Dakota 4WD indicator light
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Thanks for your input.

For some reason the previous owner unplugged the vacuum plug just above the transfer case. Basically, the hubs were always in even in 2WD.

From previous posts I gather that the vacuum should change from one line to the other on the actuator on the front axle when 4WD is engaged.

When I engage 4WD both vacuum lines on the front axle do not have any vacuum so I surmise that I may have a leaky vacuum hose.

I did replace the vacuum switch in the transfer case recently so I do not think it is that.





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