Lost vacuum
Post Fiend
Joined: Nov 2005
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From: Charles Town, W bygod Va
or you could go with this one for 1/6 the price.
Ford Diesel HVAC 4WD Electric Vacuum Pump New | eBay
Ford Diesel HVAC 4WD Electric Vacuum Pump New | eBay
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Posting Guru
Joined: Sep 2008
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If anything, having no vacuum to the FPR will cause a rich condition at idle or low throttle, but it won't be the end of the world. Do you have AFPR installed and set to what works best for your tune and injectors? Pulse width is the main controlling factor in how much fuel gets into the engine anyways.
Last edited by RIKIL; Mar 8, 2013 at 09:51 AM. Reason: cuz
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I am not sure what is up with the FPR yet, I think my gauge might be bad.
But as for the loss of vacuum...I was wrong. My brake booster was bad but I thought it wasn't working right due to lack of vacuum.
I also was able to verify another vacuum is present in a blown motor, I connected a PCV to my intake and I can feel and see (if I use a match) flow going in the valve cover on the other side. I've seen a few posts around and had questions myself how useful this will be if I have the blower. For whatever range it works in, it might help a little.
But as for the loss of vacuum...I was wrong. My brake booster was bad but I thought it wasn't working right due to lack of vacuum.
I also was able to verify another vacuum is present in a blown motor, I connected a PCV to my intake and I can feel and see (if I use a match) flow going in the valve cover on the other side. I've seen a few posts around and had questions myself how useful this will be if I have the blower. For whatever range it works in, it might help a little.
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