1984 Manual fuel pump

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Oct 6, 2013 | 02:27 PM

jseremba

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Drifting

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1984 Manual fuel pump

So I tried to use the ALDL to run the fuel pump and it did not work. I then checked the fuse. It is good. According to the flow chart I should disconnect the relay and probe terminal E got a light. Then I should proble E to B should get a light no light open ground. So i decided that I should run a wire from Terminal B to the neg of the battery. Then probe E to B. did that still no light. Tried probing terminal E key on to ground. Lost my light. The fuse is still good. I found two fuseable links just off the battery. The flow chart says that something is wrong with circuit 340. According to the charts there is a fuseable link in CKT 340 does does anyone know where it is.
Oh and one question if I ran a hot wire and switch to the fuel pump for startup, would I be doing damage to the car.
Actually I REALLY want to fix this the correct way. Please help thank you

Oct 6, 2013 | 03:29 PM

ccrazor

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From: Whitefish Falls Ontario

St. Jude Donor '08-'09

If you have the FSM, fig.8A-9 shows C341 left of the battery, this is the battery side of the fusible link feeding C340..It s/b with another link that feeds the cooling fan..

Oct 6, 2013 | 05:32 PM

vetteoz

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Quote:

Originally Posted by jseremba

I tried to use the ALDL to run the fuel pump and it did not work. if I ran a hot wire and switch to the fuel pump for startup, would I be doing damage to the car.

No
Have you done that to confirm the pump works?

Quote:

Originally Posted by jseremba

According to the charts there is a fuseable link in CKT 340 does does anyone know where it is.

On early cars ,many power feeds and their fusible links come straight of the starter Pos+ terminal , not the Batt+

Oct 6, 2013 | 05:34 PM

Bridges77

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Are you sure the fuel pump works? Just sayin.

Oct 6, 2013 | 07:37 PM

jseremba

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Drifting

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Oddly enough I thought of that. So I started the car. I did not prime it with start fluid. I cranked the starter and when it said 12 lbs the car started. I just hate riding the starter.
so yes the fuel pump works. ��

Oct 6, 2013 | 07:43 PM

jseremba

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Drifting

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Actually I did the G terminal thong just to run through the decision tree. I know the pump works or the car would not run at all correct.

Oct 6, 2013 | 11:27 PM

vetteoz

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Quote:

Originally Posted by jseremba

I cranked the starter and when it said 12 lbs the car started. ��

So to clarify what you are saying
The pump works.
The pump runs of the OP switch ( so the power supply to the relay through the fusible link is good )
The pump won't run off the relay because the relay ground (B) is bad

Jumper E to A on the connector to see if the pump runs and the relay wiring is good

Oct 6, 2013 | 11:38 PM

Cliff Harris

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From: Anaheim CA

When you do the ALDL G terminal thing the fuel pump relay has to OFF to run the fuel pump (the relay also has to be plugged in -- the connection goes through the normally CLOSED contacts of the relay to the pump).

Oops. vetteoz posted between the time I started reading and the time I posted...

You can see from the diagram that the ALDL G terminal connects to pin D of the relay (the diagram shows the relay in the off position) and then goes through the wiper arm to terminal A of the relay and on to the fuel pump.

Last edited by Cliff Harris; Oct 6, 2013 at 11:41 PM. Reason: Added reference to diagram.