Today's Message Index:
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1. 06:14 AM - Re: Fuel pump blowing a fuse? (flyv35b)
2. 08:25 AM - Re: Fuel pump blowing a fuse? (Peter H. Wei)
Message 1
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| Subject: | Re: Fuel pump blowing a fuse? |
> Testing the circuit with the battery disconnected shows good connectivity
> through the fuse. No short between the power source and the fuse body.
> Replace fuse, master on, stobes work. Strobes off, fuel pump on, blown
> fuse.
>
> Anyone had this experience before? Is is just a common fuel pump failure?
If turning on the fuel pump is what is blowing the fuse, then it sounds as
if there is a short to ground in the wire between the switch and the pump OR
possibly an internal failure inside the pump which is also a short to
ground. I'd look at where the wire goes through the firewall first. If the
pump just doesn't work but the fuse is OK then you need to check the voltage
at the pump. Cut the but splice connector at the pump and check the voltage
there. If voltage is OK then replace the pump. They are very durable but
they don't last forever.
Cliff A&P/IA
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Message 2
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| Subject: | Fuel pump blowing a fuse? |
I had the same problem about a month ago. I found the fuse was getting
blown after the strobe lights were turn on. This only happens
intermittently. I checked the wingtip strobe tubes and found the right
wing tube had turned black. I replaced the tube and the fuse has not
blown since. Hope this helps.
Peter Wei
N26986 Cheetah
-----Original Message-----
From: owner-teamgrumman-list-server@matronics.com
[mailto:owner-teamgrumman-list-server@matronics.com] On Behalf Of Peter
Langlois
Sent: Saturday, June 16, 2007 8:12 PM
Subject: TeamGrumman-List: Fuel pump blowing a fuse?
Sequence goes like this:
Master on, fuel pump on, silence (except for the gyros spinning up.)
Strobes, fuel pump, and starter are on the same fuse.
What about a fuel pump would cause this problem? Is is a wiring issue
inside the pump body, or more likely some short otherwise.
Testing the circuit with the battery disconnected shows good
connectivity
through the fuse. No short between the power source and the fuse body.
Replace fuse, master on, stobes work. Strobes off, fuel pump on, blown
fuse.
Anyone had this experience before? Is is just a common fuel pump
failure?
Thanks for the input.
PETE
Tiger N45319
Leesburg, VA
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