2001 Blazer- 4WD Vacuum

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#11

03-02-2014, 05:27 PM

smithmr

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Join Date: Jun 2011

Posts: 5

Quote:

Originally Posted by LannyL81

Are you saying that you have vacuum at the T where the red line connects, but then when you connect the red line you do not have vacuum at the other end...which would connect to the solenoid....is this correct?

If so, simple fix....replace the vacuum (red) line between the T and the solenoid.

Of course the next test will be if the solenoid switches and provides a vacuum to the cable actuator under the battery tray.....

Lanny, that is what I am saying. I have been trying to follow the vacuum line from that T to the solenoid, to see what is between those two points that could be the reason for no vacuum or if the line is broken. I have had a difficult time following that hose so far... I have considered just running a jumper line from the T direct to the solenoid to see what happens. As for the solenoid itself, I have installed a new one already... so I am hoping/assuming it's good once vacuum is supplied to it.

Quote:

Originally Posted by Captain Hook

The feed for the switch is fused, (everything is fused except the starter). There are two terminals in the switch, one fore positive, one for negative. If it pops a fuse, the switch, or your connections to it, are bad.

Captain, the fuses are good, and I have checked the switch plug with meter to insure it is getting curent and working. So I think I have eliminated this possibility.
Thanks to everyone for replying... all input has been helpful in working through this.

#12

03-04-2014, 03:20 PM

darwin-t

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Join Date: Jan 2014

Posts: 18

I tried it without the fuse and it works perfectly now.

I had hooked it up to the 4WD fuse, adding the load of it to the load the fuse was already handling. I'll put an inline fuse in later.

I checked the solenoid with an ohm meter - 72 ohms. No measurable amperage even when it was engaged.