Foretravel Owners' Forum For owners and Fans of Foretravel Motorcoaches September 08, 2025 ...

vacuum pump

August 13, 2010, 04:05:14 pm

Our front vacuum pump; which controls the air flow from the front heater and air conditioning will not accept a fuse.  Stopped working yesterday, changed fuse and immediately blows a new one....Checked all wiring that I could see.  Could I have a short in the pump itself?  Or where else can I be looking?  Many thanks, again.

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Re: vacuum pump

Reply #1 – August 13, 2010, 04:35:40 pm

I had a water pump fail in a mode that blew fuses. I tried a larger fuse and it still blew immediately. I assumed there was a short in the motor and had the pump replaced. Installing a the new pump fixed the problem. I expect the same kind of failure might occur in a 12V vacuum pump.

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Re: vacuum pump

Reply #2 – August 13, 2010, 09:21:04 pm

Thanks J.D.  exactly th problem...of course, found this out Friday nite at 95 degrees...glad I just serviced the Genny, for it will get a work out the next couple days as we head home. 

Motor is toast, may replace vacuum while I have everything torn apart.

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Re: vacuum pump

Reply #3 – August 13, 2010, 10:02:29 pm

Yup! You will need to get it fixed so your coach will pass the PDI for the new owner. I think I read that someone in your household is ready to upgrade to a bigger coach. I think she may really prefer driving a bigger coach. ;-)

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Re: vacuum pump

Reply #4 – August 13, 2010, 10:19:10 pm

Will this help?  http://www.evanstempcon.com/serviceparts.php?  They have a really good troubleshooting section!  And parts section with what I think is your vacuum motor.

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Re: vacuum pump

Reply #5 – August 14, 2010, 01:12:59 am

Most diesels, including diesel pickups have 12 VDC vacuum pumps.  Start by checking at a NAPA for one for a Ford diesel PU.

Brett

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