Fuel Pump Relay

[Rodney Fulk]

This also happens when the wire gauge is not sufficient enough for the
current carried. The copper slowly burns up and gets more and more resistant
along the way. This is what happens in the '94 caprices in relation to their
cooling fans. They put in larger fan motors then the wire can handle. Over
time the wire its self gets burnt and is black in color if you strip back
the casing. Then the current relay socket will not handle the power needed
to get through this now burnt wire. GM's fix is to use a bigger relay and a
different socket.
Still use the same wires but apparently they don't get hot enough to catch
anything on fire....

In some cases rewiring the whole system is the only option if the wire gets
too bad. And if you do that you should use one gauge higher then you did...


-----Original Message-----
From: owner-diy_efi at diy-efi.org [mailto:owner-diy_efi at diy-efi.org]On
Behalf Of Kris Sundell
Sent: Friday, January 18, 2002 11:14 AM
To: diy_efi at diy-efi.org
Subject: RE: Fuel Pump Relay


I was having a similar problem with the fuel pump relay in my boat.  It
turned out that one of the terminal connections at the relay was bad and was
creating a lot of resistance.  The resistance generated heat and started
melting connections on the relay.  Once I redid the connections with a high
dollar crimping tool, the problem was solved.

-----Original Message-----
From: owner-diy_efi at diy-efi.org [mailto:owner-diy_efi at diy-efi.org]On Behalf
Of Tedscj at aol.com
Sent: Friday, January 18, 2002 4:30 AM
To: diy_efi at diy-efi.org
Subject: Re: Fuel Pump Relay

<<Are you blowing Fuses or Relays?>>

I am blowing the relay.  It's a DIY installation, and I did not install a
fuse between the relay and the fuel pump.  I pulled the harness from a GM
car, and I don't think it originally had a fuse in that circuit.
Tom
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