1988 Toyota Landcruiser Front wheel drive train

JIM BATCH

MEMBER
1988 TOYOTA LANDCRUISER
6 CYL
4WD
AUTOMATIC
140,000 MILES

My 4wd light came on, and I checked it you can spin the rear drive shaft and the front on moves also. With the hubs unlocked it is in 2wd but the shaft still turns. How does the 4wd drive switch engage the transfer case to the 4wd and where on the case does that happen.
Thank you, Jim Batch

3 Replies

MHPAUTOS

MECHANIC
31,937 POSTS

HI there,

The transfer is in High ratio 4 WD the switch that turns on the light is on the side of the transfer box, is yours a manual select or rush button type selector for 4X4?

Mark (mhpautos)

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Thursday, July 16th, 2009 AT 8:18 AM

JIM BATCH

MEMBER
2 POSTS

My shifts with a push button, I found the switch that turns the 4wd light on the dash I tested it it works fine I just don't know how or what the push button swith operates.
Thank you and I will donate to your service.

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Thursday, July 16th, 2009 AT 8:26 AM

MHPAUTOS

MECHANIC
31,937 POSTS

HI there,

There are 2 VSV (vacuum switching Valves ) on the fire wall, they are what controls the selection of the 4 wheel drive actuator, I would think that it has selected 4X4 and a vacuum line has come off this is fairly common, check this out next.

Mark (mhpautos)

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