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1994.5 - 1997 7.3L Power Stroke Diesel  

SD Vacuum pump upgrade???

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Old Apr 3, 2018 | 05:18 PM
  #1  
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SD Vacuum pump upgrade???

Anyone done this?

Getting sick of replacing these things, figured I'd do the update while I got a spare vehicle and don't have to worry about my truck being up.

I am guessing install and power from underthehood fuse box?
 
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Old Apr 3, 2018 | 05:47 PM
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Interested as well
 
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Old Apr 3, 2018 | 06:20 PM
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Are you, or did you convert over to hydro boost brakes? I don't think the electric pump can develop enough vacuum to run the brake booster.
 
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Old Apr 3, 2018 | 06:23 PM
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Old Apr 3, 2018 | 08:52 PM
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I did the SD electric vacuum pump because I went Hydro brakes and did not want to run the factory pump. I had some vacuum leaks that made the pump run a lot and was loud. I picked up a Bosh pump from a volvo on ebay for less than I paid for the sd pump. It came with the mounting bracket and the power connector. The Bosh pump almost never has to run and when it does it is quiet.
 
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Old Apr 4, 2018 | 06:59 AM
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superduty pump will only work if you already converted to hydroboost brakes. if you still have the vacuum brake booster the sd pump will not work.
 
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Old Apr 4, 2018 | 10:01 AM
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Originally Posted by tjc transport
superduty pump will only work if you already converted to hydroboost brakes. if you still have the vacuum brake booster the sd pump will not work.
Ahh, so the SD pump is a climate controls only style thing. Gotcha.

Damn.
 
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Old Apr 4, 2018 | 12:59 PM
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^^^^^ Correct; and if Ford had not insisted on retaining such Cold War era HVAC technology for so long, we could completely eliminate anything vacuum-related with a hydroboost upgrade.
 
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Old Apr 6, 2018 | 04:53 PM
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vacpump delete
 
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Old Apr 15, 2018 | 08:01 PM
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Personally just removing the pump could change the belt dynamic I would think. Which might cause some untold strain on the accessories, even with a dual tensioner. Wasn't the consensus a bypass pulley would have to be fabricated somehow?
 
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