greatwhite
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- Mar 2, 2012
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OK same as many on here, I'm a bit mechanically inclined. My truck is a 2001. Out this past week and went to engage the 4x4 light just flashing indicating it hasn't engaged if I wait awhile it goes back to 2wd. It will do this in auto, 4Hi, 4Lo. When this happened on my 1999 it was just a loose plug going into the front diff.
I also unplugged the computer and checked the connections there is no corrosion.
I have checked the vac actuator it seems to work I removed the battery (hooked it back using cables) I can see the actuator move. I can here the same light clunk from the transfer case as if it is moving and also the sound of the encoder motor (I think).
I found the vacuum lines from the actuator to a solenoid??? on the back firewall then there are two line going to a T on the drivers firewall one line goes into the firewall, but I cant figure out where it goes.
Where are the vac line I have to check.
Where is this switch on the front Front Diff can I test it?
What is the Vac switch on TC where do I find it?
Cable is not broken
Thanks all
I also unplugged the computer and checked the connections there is no corrosion.
I have checked the vac actuator it seems to work I removed the battery (hooked it back using cables) I can see the actuator move. I can here the same light clunk from the transfer case as if it is moving and also the sound of the encoder motor (I think).
I found the vacuum lines from the actuator to a solenoid??? on the back firewall then there are two line going to a T on the drivers firewall one line goes into the firewall, but I cant figure out where it goes.
Where are the vac line I have to check.
Where is this switch on the front Front Diff can I test it?
What is the Vac switch on TC where do I find it?
Cable is not broken
Thanks all