4x4

zspace 92 · Jun 3, 2012

hi
is the full time 4x4 light supposed to light up when in 4 lo i just bought the truck the light doesn't works but the 4x4 hi and low works fine i pulled the cluster put another bulb in (brand new ) still doesn't work
the part time 4x4 light works any ideas ?

xj-JEEPER · Jun 3, 2012

yes it is my jeep is the same way. correct me if im wrong

iSlacker816 · Jun 3, 2012

Part time 4x4?

Mopar1973Man · Jun 3, 2012

Cad axles?

If it is then the vacuum unit is not locking the hubs...

Bigtman07 · Jun 4, 2012

Or the CAD sensor is out. That does happen.

Also how did you test to check that 4wd is working?

zspace 92 · Jun 4, 2012

i think it works i got stuck in a snowbank 1 front wheel was spinning an both back wheels but what do you mean by cad axles how can i know if it is

Mopar1973Man · Jun 5, 2012

Here you go... I know its for a Cummins engine but the rest is the same.
Mopar1973Man's Dodge Cummins Articles - Central Axle Disconnect (CAD) System Troubleshooting

Bigtman07 · Jun 5, 2012

^^^Love that diagram!

Mopar1973Man · Jun 5, 2012

Bigtman07 said:
^^^Love that diagram!

Thanks to my second in command over on my side of the fence drew that up for the 2nd Gen trucks with CAD axles since its a popular problem.

zspace 92 · Jun 6, 2012

so how do i know if i have cad axles ?
the front axle is supposed to lock ?

Okiespaniel · Jun 6, 2012

If you have a 2nd gen Dodge, and if it is original you have a CAD system.

If your 4wd is engaging but your light isn't coming on it could either be a wiring issue or your switch on the axle assembly is bad.

Okiespaniel · Jun 6, 2012

Here's a couple pics of the CAD system...sometimes the indicator switch gets dirty and won't function. Your actuator also may not be engaging fully and tripping the switch if it's plugged with mud or dust. Or the wiring could have failed.

BTW all this is found on the passenger side of your axle right by the axle vent hose.

Mopar1973Man · Jun 6, 2012

zspace 92 said:
so how do i know if i have cad axles ?
the front axle is supposed to lock ?

Because you'll have a CAD (Center Axle Disconnect) Unit on the passenger side of the axle with vacuum line like this one...

As you can see if the unit doesn't move because of vacuum problems then the 4WD switch won't come on... It requires the fork to slide over to touch the switch.

zspace 92 · Jun 7, 2012

well thanks i will look this weekend

4x4

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