[T3] Ground for Fuel Pump Plug

[SCS Crewcab]

Is that the line that returns unused gas from the engine? How do you 
blow it out backwards?


On 7/12/2011 4:42 PM, Mike Fisher wrote:
> Be sure and blow out your fuel Return Line backwards!  They cause big
> trouble if they get plugged up.  BTDT
>
> On Tue, Jul 12, 2011 at 1:32 PM, SCS Crewcab<scscrewcab at bellsouth.net>  wrote:
>> I guess you're right. That way, I can check all the lines when I take it
>> out.
>>
>> On 7/12/2011 4:26 PM, Mike Fisher wrote:
>>> You could, but that is the hard way I'm thinking.
>>>
>>> On Tue, Jul 12, 2011 at 1:21 PM, SCS Crewcab<scscrewcab at bellsouth.net>
>>>   wrote:
>>>> Can I run it forward and back with it still in the car if I disconnect
>>>> the
>>>> supply lines coming from the tank and put them in a bucket of diesel?
>>>>
>>>> On 7/12/2011 4:10 PM, Mike Fisher wrote:
>>>>> You can run them both forwards/backwards in a bucket of diesel oil to
>>>>> clean them out.
>>>>>
>>>>> On Tue, Jul 12, 2011 at 1:03 PM, SCS Crewcab<scscrewcab at bellsouth.net>
>>>>>   wrote:
>>>>>> My prob wasn't the ground at the fuel pump plug after all. It was the
>>>>>> ground
>>>>>> coming from lead 19 from the ECU. At the firewall in the engine
>>>>>> compartment,
>>>>>> just to the left of center, there is a single wire connector that joins
>>>>>> 2
>>>>>> single white wires. One of the wires has continuity with terminal 85 on
>>>>>> the
>>>>>> fuel pump relay. The other wire is broken off. I'm pretty sure it
>>>>>> should
>>>>>> connect to terminal 19 on the ECU but, I do not see any place on the
>>>>>> harness
>>>>>> around this connector where this wire could have broken. It must have
>>>>>> broke
>>>>>> off just barely inside the harness. If anybody has a picture online
>>>>>> that
>>>>>> can
>>>>>> point to where, on the harness, to look, it would help a lot.
>>>>>>
>>>>>> When I ground the broken white wire at the firewall, the relay does
>>>>>> energize
>>>>>> and I get power to the fuel pump but, the pump doesn't spin. This car
>>>>>> has
>>>>>> sat for 3 years with an empty gas tank and the pump was working when I
>>>>>> parked it. I priced a new pump online and, it's a real bargain at
>>>>>> $547.00.
>>>>>> I'm hoping the gas that was left it has the pump mechanism gummed up.
>>>>>> Is
>>>>>> there a link somewhere online that gives instructions on cleaning or
>>>>>> repairing them?
>>>>>>
>>>>>>
>>>>>>
>>>>>> On 7/12/2011 3:05 PM, Jim Adney wrote:
>>>>>>> On 12 Jul 2011 at 14:43, SCS Crewcab wrote:
>>>>>>>
>>>>>>>> I'm trying to diag a prob with my fuel pump on a '71 FI Squareback.
>>>>>>>> I'm
>>>>>>>> not getting a ground on the neg side of the plug that connects to the
>>>>>>>> pump. Where does this terminal connect to ground?
>>>>>>> Both wires come thru a grommet in the firewall, under the left side
>>>>>>> fo the dash. The red one goes to the fuel pump relay and the brown
>>>>>>> one goes to a ground connection. They are easy to follow once you
>>>>>>> find that grommet and the 2 wires.
>>>>>>>
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>>>>>>
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>>>
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