Originally Posted by L84sky

The pump only needs three seconds to pressurize the front differential and engage the 4WD actuator. The pump automatically shuts off after ten seconds to protect the pump motor from burning out. The ten second run time is an indication there is a large leak at the pump, or the hose from the pump to the front diff, or inside the front diff. The 4WD indicator light does not illuminate until the pump pressure reaches 5 psi. Pull the rubber hose off the bottom of the front diff and plug it with a Phillips screwdriver. If the 4WD indicator illiminates after 3 seconds the leak is inside the diff. The pump only affects the front axles. Are you saying the car goes forward in 2WD and 4WD-LOW but not in 4WD-HIGH?

Originally Posted by Tate10

I ... found a little motor and looks like a pump jusy laying in the fender well.... could tjis little gagget i found be the pump for the 4x4 actuation

Originally Posted by L84sky

The pump only needs three seconds to pressurize the front differential and engage the 4WD actuator. The pump automatically shuts off after ten seconds to protect the pump motor from burning out. The ten second run time is an indication there is a large leak at the pump, or the hose from the pump to the front diff, or inside the front diff. The 4WD indicator light does not illuminate until the pump pressure reaches 5 psi. Pull the rubber hose off the bottom of the front diff and plug it with a Phillips screwdriver. If the 4WD indicator illiminates after 3 seconds the leak is inside the diff. The pump only affects the front axles. Are you saying the car goes forward in 2WD and 4WD-LOW but not in 4WD-HIGH?

Originally Posted by L84sky

Tate10,
Could you post a picture of the device?