Re: 505 In tank pump replacement and fuel sender repair

steve leung (sleung123@juno.com)
Wed, 24 Jun 1998 07:32:34 -0700

Marco,

The 85 505 XN6 have an in tank pump. Check it by running a hose to the
pump outlet into a container, apply 12 volts to the pump for a minute.
Measure how much fuel came out and compare to the spec. You can replace
it with any pump provided it has the same output and can be mounted to
the existing pump bracket assembly. I'd guess you can find one in the
Netherlands.

Steve

On Wed, 24 Jun 1998 10:41:02 +0200 Marco <miljaar@xs4all.nl> writes:
>Does the 85 505 STI with XN6 have an in tank fuel pump??? Is there a
>way I
>can check if the pump is working and what happens if the pump is not
>working. What if the pump is dead, can i replace it with any pump???
>Is it
>probably to get a pump like that in the Netherlands???
>
>Greetz
>marco
>
>>I just replaced the in tank fuel pump (just the pump motor) and
>repaired
>>a bad low fuel warning switch of the fuel sender in my 84 XN6 sedan.
>>To get pump and sender out, access from rear deck (speakers) inside
>the
>>car is required. Pull rear seats, remove deck, peel back insulation
>and
>>you'll see access holes for pump and sender. From the trunk, undo
>the
>>lock rings on pump and sender then remove from inside the car.
>>The monting of the new pump motor is with a short length of fuel hose
>and
>>hose clamps. Since the pump motor is not an exact replacement
>physically
>>it does not have mounting holes as the OEM one. So the new pump
>motor is
>>just hanging from the fuel hose to the metal fuel pickup tube. The
>new
>>pump motor have threaded studs for +/- but did not come with
>hardware. I
>>scrounged around and luckily found the right size nuts. Crimped
>two
>>wires to ring spade lugs and soldered other ends to the terminals on
>the
>>pump bracket. Make sure you buzz out +/- and connect them properly.
>On
>>the sedan, negative ground is connected to the pump bracket so there
>is
>>only one wire (+) on the outside of the assembly after you are done.
>>Attach pickup screen, reinstall and that's it. Unfortunately the new
>>pump is very noisy. I thought maybe it was touching the tank so I
>raised
>>it a few inches but the noise is still there. I bought two of these
>pump
>>motors so I'll have to try the other one next, hopefully it'll be
>quiet.
>>
>>The fuel sender may be taken apart by using a dremel to cut the
>pushed on
>>internal star lock washer on the bottom of the unit. There was a
>layer
>>of crud on the circular contact ring of the low fuel level switch. I
>>used 600 grit wet dry paper to remove the crud and the switch is
>working
>>again. Since I destroyed the star washer by cutting it and did not
>have
>>a replacement, I crimped the tube after everything is assembled and
>>epoxied it to the phenolic bottom so it won't come apart in the tank.
>
>>
>>
>>Steve
>>
>>
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>
>

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