1987 740 In-tank fuel pump question

  • Thread starter Thread starter Jamie
  • Start date Start date
J

Jamie

I've been reading here and on the brickboard about the in-tank fuel
pump, the filter sock and the bellows hose.

Sometimes when I get to about 1/3 tank of gas and make a right turn,
the car sputters until I straighten out, then it goes back to normal.

I want to inspect the in-tank assembly to see if the joiner hose has
split and is allowing air in, or maybe the sock is plugged and needs
replacement. While I am there, I may just spend the $35 and replace the
in-tank pump.

After reading a lot about this, I can't determine what needs to be
disconnected under the car?

Can this entire procedure be done via the trunk access panel, or must
something (what?) be disconnected under the car?

Thanks,
JB
 
I don't know about the 740, but in my '89 240 wagon, the top of the fuel
tank is accessable from above, and I don't have to disconnect anything under
the car...
 
I've been reading here and on the brickboard about the in-tank fuel
pump, the filter sock and the bellows hose.

Sometimes when I get to about 1/3 tank of gas and make a right turn,
the car sputters until I straighten out, then it goes back to normal.

I want to inspect the in-tank assembly to see if the joiner hose has
split and is allowing air in, or maybe the sock is plugged and needs
replacement. While I am there, I may just spend the $35 and replace the
in-tank pump.

After reading a lot about this, I can't determine what needs to be
disconnected under the car?

Can this entire procedure be done via the trunk access panel, or must
something (what?) be disconnected under the car?

Thanks,
JB
Click to expand...
If you have access to a lift then remove the fuel fill frangible
coupling (rubber hose). With that out of the way everything else can be
serviced through the access hole. Otherwise bungee cord the filler hose
back out of the way, just makes the job more fiddly.

Bob
 
Thanks all. I was trying to figure out how in the world the filler hose
could affect the in tank sending unit.
 
It is easier to disconnect the hoses and wires from a 744 than from a
244.

That isn't going to be your problem.

Your problem will come in removing and reinserting the pump and gague
assembly.

It was a bear to remove and put in: had to tilt it "just so" in order
to finesse it out.

Be careful with the wiring to the pump: I accidentally detached mine
and had to solder it back on.
 
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