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4x4 Issues on a 1994 V6 4Runner?

I have a 1994 4Runner 4x4 with a 5spd manual trans and the 3vze V6 engine, which bought recently. The vehicle has about 102,000k miles on it and is in very good condition. I tried to put the car in 4wd the other day and I noticed that the light on the instrument panel didn't come on. In the manual it says that you may have to stop the car completely or even drive in reverse to make the light come on. I tried these things and it still didnt work. I went ahead and checked the transmission and the t-case oil which looked fine but i changed it anyway. still no change in the problem though.

If the problem were just the indicator light (which I seriously doubt) I wouldn't care about fixing it, but because this vehicle has automatic locking hubs I'm not sure what I can do to troubleshoot the system. Does any one know how I can:

1) Check to make sure the Front propeller shaft is turning from the transfer case? 2) Verify that the locking hubs are engaging?

If the problem were just the indicator light (which I seriously doubt) I wouldn't care about fixing it.

Thanks, Anders

Reply to
Anders
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"Does any one know how I can:

1) Check to make sure the Front propeller shaft is turning from the transfer case? 2) Verify that the locking hubs are engaging?"

Drive through some sand.

Reply to
desert_taco

I don't think that year came with locking hubs. They all had the ADD system where the hubs are locked solid all the time and the front diff does this disconnect thing to remove power from the front.

Get under the truck and see if you can spin the CV joints by hand.Also check the front drive shaft when it is in 4x4 and 2x4. Or drive it around in 4x4 and see if it feels like it's in 4x4.

Get the factory survice manual. It goes over troubleshooting the system.

Reply to
Eddie

The VERY FIRST thing to do is to verify the wiring between the sensor (likely a simple switch in the transmission or transfer case) is OK and the light in bulb/LED in the dash is good. Get the wiring diagram & see if opening or closing the circuit with a jumper or just pulling a connector off a terminal lights up the dash light as it should. Then when you know what is going on in this area, you should think about mechanical issues. Electrical trouble shooting is much easier & cheaper than mechanical.

Jim

Reply to
jim

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