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  #1  
Old 12-16-2004, 03:10 AM
Jimmy Joe's Avatar
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Join Date: May 2004
Location: California central coast
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$2 Servo/Aux Pump Bypass Fix !

I had it! Enough! Too darn cold!
So I took out the aux pump, which did not seem to work, and the two lines that it connected to, via the Servo engine side, were both 3/4" (it is the stinkin servo that changes hose size).
The two remaining metal lines, running right on top of each other, were connected with a 2' looped piece of 3/4" heater hose ($2), and twisted slightly so it wouldn't collapse.
Now, I had full heat to defrost!
Then, I reconnected the vacuum lines to the pushbutton unit I had previously disconnected, and I even get the vents (but not the floor vents) to give some heat, and lower blower fan action.
I have no idea why those vents work now, but they do.
Perhaps something cc related still works.....?
Go figure.
All I know is now the heats a crankin, and I am smilin
I also dont have heat on all the time, I think, but if it is a problem when it gets warmer, a gate valve will stop that.
(unless I somehow figure out a different servo, mine leaks)


I will explain this better and take pics if another frusterated servo lightweight like me wants it.

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  #2  
Old 12-16-2004, 08:06 AM
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Thumbs up Vacuum Pods

Before I started on the CC unit, I would check my vacuum pods. The pods control where the blows out of. Could even be a loose or broken vacuum line going to the pod. Probrably will need a Mityvac to check them. Do a search on "center vents", "vacuum pods", or "floor vents". Good luck.
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  #3  
Old 12-18-2004, 10:02 PM
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update:

well, after bypassing the one line, and leaving the fender side line on the Servo, I noticed a leak from the unused Servo ports. Turns out the Servo is indeed cracked, and must leak internally...
So I just got another 2' piece of 3/4, and ran it right around the piece of junk, now she gives pleny o heat, with no leaks.
The heat does not seem to be present when the blower is off!
We don't need no stinkin servos!
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Old 12-18-2004, 10:52 PM
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I found that the gasket between the valve and the shaft that turns it goes bad and leaks coolant into the mechanical (top) side then flows out of the drain holes or out of a common crack. DON"T open these things unless you have something to reseal that gasket. Ask me how I know, its a PITA.
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Old 12-18-2004, 10:56 PM
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my case is cracked, do I have anything to lose, or gain, by tearing it apart?
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Old 12-19-2004, 01:07 AM
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yes, pictures, pictures, pictures.....
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  #7  
Old 12-19-2004, 01:55 AM
123c
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I'm glad to see that you got your servo bypassed. I'll try and post some pictures and make a parts list from what I did with my bypass.
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  #8  
Old 01-04-2006, 01:16 PM
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Dredged up from the grave, yes, but I have this problem and need any pics or tips guys have on this. Going to pull my servo today.

Thanks,
Dunl
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Old 01-05-2006, 03:26 PM
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Anyone got pics of their bypass?
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Old 01-05-2006, 03:43 PM
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I noticed before when I was in the glow plug cycle, my Aux water pump used to always run, which it doesnt anymore, and I only have heat sometimes...is this a dead Aux pump?
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Old 01-05-2006, 04:46 PM
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Need some help for a COMPLETE mechanical newbie here....is there anything I need to watch out for when I remove the servo? ie...air bubbles in the coolant system, etc. that I need to keep from happening?

Or is it just the opposite of "plug and play" - "remove and rejoice"?
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Old 01-05-2006, 05:15 PM
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Bumpity bump bump....

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