Can a 740 run without in-tank pump?

12-10-2008, 11:45 AM

TIA

Before I go pick it up at the shop...

Can a 740 run without an in-tank fuel pump?

I had my mechanic try to fix fuel gage. Despite me telling him to go
in through the trunk floor access panel to check the pump connection
he reached up from beneath car and broke cable to pump clean off
<sic>.

His comment "well it started and I moved it out of the shop" "it's
only for when the tank gets low"

He mentioned that the flange bolts on the pump were un-usable so I
guess I'm not replacing the pump <easily>.

I have never seen a pump in situ but I believe harness is part of the
pump looking at one at FCP Groton.

grrrrr

jimB

12-10-2008, 03:32 PM

see...

http://www.swedishbricks.net/700900F...ePump_Problems

12-10-2008, 05:32 PM

jimb wrote:
> TIA
>
> Before I go pick it up at the shop...
>
> Can a 740 run without an in-tank fuel pump?
>
> I had my mechanic try to fix fuel gage. Despite me telling him to go
> in through the trunk floor access panel to check the pump connection
> he reached up from beneath car and broke cable to pump clean off
> <sic>.
>
> His comment "well it started and I moved it out of the shop" "it's
> only for when the tank gets low"
>
> He mentioned that the flange bolts on the pump were un-usable so I
> guess I'm not replacing the pump <easily>.
>
> I have never seen a pump in situ but I believe harness is part of the
> pump looking at one at FCP Groton.
>
> grrrrr
>
> jimB

It will start and run, but it will not run well when the tank gets down
to about half. On top of that, the main pump will fail much sooner
without the pre-pump. He broke it, he should fix it. If he won't, find a
new mechanic. I would do that anyway once this mess is over. I'm not
sure what flange bolts he's talking about, the pump clips into a bracket
on the pickup tube in the tank bung.

12-11-2008, 02:38 AM

On 12/10/2008 7:36 AM, jimb wrote:
> TIA
>
> Before I go pick it up at the shop...
>
> Can a 740 run without an in-tank fuel pump?
>
> I had my mechanic try to fix fuel gage. Despite me telling him to go
> in through the trunk floor access panel to check the pump connection
> he reached up from beneath car and broke cable to pump clean off
> <sic>.
>
> His comment "well it started and I moved it out of the shop" "it's
> only for when the tank gets low"
>
> He mentioned that the flange bolts on the pump were un-usable so I
> guess I'm not replacing the pump <easily>.
>
> I have never seen a pump in situ but I believe harness is part of the
> pump looking at one at FCP Groton.
>
> grrrrr
>
> jimB
Is your fuel system Bosch or Regina the Bosch system has 2 pumps 1 in
the tank & 1 under the car the Regina system has 1 pump in the tank
Glenn K

12-11-2008, 03:35 PM

On Wed, 10 Dec 2008 09:42:02 -0800, James Sweet
<jamessweet1@trashmail.net> wrote:

>jimb wrote:
>> TIA
>>
>> Before I go pick it up at the shop...
>>
>> Can a 740 run without an in-tank fuel pump?
>>
>> I had my mechanic try to fix fuel gage. Despite me telling him to go
>> in through the trunk floor access panel to check the pump connection
>> he reached up from beneath car and broke cable to pump clean off
>> <sic>.
>>
>> His comment "well it started and I moved it out of the shop" "it's
>> only for when the tank gets low"
>>
>> He mentioned that the flange bolts on the pump were un-usable so I
>> guess I'm not replacing the pump <easily>.
>>
>> I have never seen a pump in situ but I believe harness is part of the
>> pump looking at one at FCP Groton.
>>
>> grrrrr
>>
>> jimB
>
>
>It will start and run, but it will not run well when the tank gets down
>to about half. On top of that, the main pump will fail much sooner
>without the pre-pump. He broke it, he should fix it. If he won't, find a
>new mechanic. I would do that anyway once this mess is over. I'm not
>sure what flange bolts he's talking about, the pump clips into a bracket
>on the pickup tube in the tank bung.

Mechanic is side issue, he generally works out OK. Long history with
him. He always makes good. Sometimes he does some strange things
though.

Incredulous, I drove around a long block apparently with the residual
fuel before I paid him. Went to start again and OOPS...

I have seen the top of the pump in the Haynes manual as the mechanic
saw underneath car. The tank not plastic (different fitting) as some.

Unless I am mistaken, there are stud's coming out of the top of the
fuel tank. The "bung" as you call it is the float sending unit with
the fuel lines and the cable.

The bung has a circular flange that fits over the studs and is
retained by nuts.

I have looked at some threads on brickboard and I do not believe it is
the bunk nut variety. It is 1985 but may be early 1985.

The pump does seem to be clipped to the pickup tube.

If this is not the case, please advise. I am using someone else's eyes
and hands so I have not seen it in person.

Question is...

Is there a separable connection to the unit or do the wires just pass
through a bushing?

I think our old usenet friend Jamie might have done this fuel pump
wiring repair on his beloved 740.

All this and my 740T is still screwed (see previous thread).

I own 5 POS vehicles and they're dropping like flies and winter is
coming. Well, 740T is NOT a POS.

TIA

jimB

12-11-2008, 03:35 PM

On Wed, 10 Dec 2008 09:42:02 -0800, James Sweet
<jamessweet1@trashmail.net> wrote:

>jimb wrote:
>> TIA
>>
>> Before I go pick it up at the shop...
>>
>> Can a 740 run without an in-tank fuel pump?
>>
>> I had my mechanic try to fix fuel gage. Despite me telling him to go
>> in through the trunk floor access panel to check the pump connection
>> he reached up from beneath car and broke cable to pump clean off
>> <sic>.
>>
>> His comment "well it started and I moved it out of the shop" "it's
>> only for when the tank gets low"
>>
>> He mentioned that the flange bolts on the pump were un-usable so I
>> guess I'm not replacing the pump <easily>.
>>
>> I have never seen a pump in situ but I believe harness is part of the
>> pump looking at one at FCP Groton.
>
>
>It will start and run, but it will not run well when the tank gets down
>to about half. On top of that, the main pump will fail much sooner
>without the pre-pump. He broke it, he should fix it. If he won't, find a
>new mechanic. I would do that anyway once this mess is over. I'm not
>sure what flange bolts he's talking about, the pump clips into a bracket
>on the pickup tube in the tank bung.

Mechanic is side issue, he generally works out OK. Long history with
him. He always makes good. Sometimes he does some strange things
though.

Incredulous, I drove around a long block apparently with the residual
fuel before I paid him. Went to start again and OOPS...

I have seen the top of the pump in the Haynes manual as the mechanic
saw underneath car. The tank not plastic (different fitting) as some.

Unless I am mistaken, there are stud's coming out of the top of the
fuel tank. The "bung" as you call it is the float sending unit with
the fuel lines and the cable.

The bung has a circular flange that fits over the studs and is
retained by nuts.

I have looked at some threads on brickboard and I do not believe it is
the bunk nut variety. It is 1985 but may be early 1985.

http://www.geocities.com/magicbus1974/volvo/tank2.htm

The pump does seem to be clipped to the pickup tube.

If this is not the case, please advise. I am using someone else's eyes
and hands so I have not seen it in person.

Question is...

Is there a separable connection to the unit or do the wires just pass
through a bushing?

I think our old usenet friend Jamie might have done this fuel pump
wiring repair on his beloved 740.

All this and my 740T is still screwed (see previous thread).

I own 5 POS vehicles and they're dropping like flies and winter is
coming. Well, 740T is NOT a POS.

TIA

jimB