Little black pump right side of engine bay??? - Ford Powerstroke Diesel Forum
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Old 01-23-2009, 07:51 AM
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Little black pump right side of engine bay???

What is this? It's like a vacuum pump or something, mine now stays on all the time. I't just started doing this recently?

Thanks
Hoss
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Old 01-23-2009, 07:55 AM
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Quote:
Originally Posted by Hoss350 View Post
What is this? It's like a vacuum pump or something, mine now stays on all the time. I't just started doing this recently?

Thanks
Hoss
?????....dunno....can you post a pix and a better description of where it is? I don't see one under my hood
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Old 01-23-2009, 08:00 AM
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Originally Posted by Hoss350 View Post
What is this? It's like a vacuum pump or something, mine now stays on all the time. I't just started doing this recently?

Thanks
Hoss
It's the motor that supplies vacuum to the Auto locking hubs
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Old 01-23-2009, 09:34 AM
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That's what I was thinking it is, so why would it be running constantly? I followed the vacuum lines down, and they all appeared to be hooked up.
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Old 01-23-2009, 09:58 AM
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Most likely they are rotted at the hubs. Very common....
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Old 01-23-2009, 09:01 PM
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Originally Posted by symbols View Post
Most likely they are rotted at the hubs. Very common....
didnt know that. I have used and owned Ford vehicles equiped with this feature since maybe 1987 and have never had a problem with them at all. Thanks for the info. I have heard of problems with this system before but didn't even know they were vacum operated.
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