Spring cruisin'
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Cargo Master
Joined: Sep 2004
Posts: 2,757
Likes: 138
From: Alberta Canada
Spring cruisin'
Had a nice day Friday, so cruised in the '50 truck.
About the third time I've been out with it since winter. Truck purred along, it likes slightly cooler weather.
Got up Saturday to rain, as I walked past truck I noticed the sound of the electric fuel pump being on. Quickly disconnected battery cable and checked ignition key, but it was off. Pump is wired through ignition on, then through roll over switch.
Fault must be in ignition switch (original) or shorted to another hot all times wire.
Did not get a chance to trouble shoot , as it snowed all day Sunday ! I worked on the '59 Beetle all weekend and got it running this morning. Have a rattle" in the re-built motor, that I thought I cured by removing engine and replacing clutch pressure plate, Nope.
I love this hobby !
Tom
About the third time I've been out with it since winter. Truck purred along, it likes slightly cooler weather.
Got up Saturday to rain, as I walked past truck I noticed the sound of the electric fuel pump being on. Quickly disconnected battery cable and checked ignition key, but it was off. Pump is wired through ignition on, then through roll over switch.
Fault must be in ignition switch (original) or shorted to another hot all times wire.
Did not get a chance to trouble shoot , as it snowed all day Sunday ! I worked on the '59 Beetle all weekend and got it running this morning. Have a rattle" in the re-built motor, that I thought I cured by removing engine and replacing clutch pressure plate, Nope.
I love this hobby !
Tom
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Cargo Master
Joined: Sep 2004
Posts: 2,757
Likes: 138
From: Alberta Canada
Trouble shooting
Started looking for the issue with my fuel pump today, pulled relays, replace EEC and will buy new relays Monday, Took time to rewire the cab under dash. Measured contacts on both fuel pump relay and EEC relay. Both seem defective , as they have continuity across control contacts in de-energized state. hope replacing them solves problem, as weather is right for cruising.
Tom
Tom
Logistics Pro
Joined: May 2010
Posts: 3,793
Likes: 19
From: Austin
Hey Tom,
Hmmm... You know the thing that concerned me the most - It's still snowing
at the end of May! That's crazy & horrible all at the same time. You'll fix that
electric fuel problem - not sure what you can do about it snowing in the summer.
I hear South Florida is nice this time of year....
Hang in there & keep us posted on the electric problem & the snow...
Ben in Austin
1950 F1 (351W/AOD)
Hmmm... You know the thing that concerned me the most - It's still snowing
at the end of May! That's crazy & horrible all at the same time. You'll fix that
electric fuel problem - not sure what you can do about it snowing in the summer.
I hear South Florida is nice this time of year....
Hang in there & keep us posted on the electric problem & the snow...
Ben in Austin
1950 F1 (351W/AOD)
Fleet Owner
Joined: Jul 2004
Posts: 27,299
Likes: 1,059
From: NM
That's mighty suspicious that both relays went south at the same time?! Is it possible the contacts fused together because of too much current? Does your FP draw a lot more than stock Ford? Might be worth opening the relays to see how they failed.
Thread Starter
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Cargo Master
Joined: Sep 2004
Posts: 2,757
Likes: 138
From: Alberta Canada
current draw on fuel pump
Ross, not sure what the current draw is on the fuel pump. but fusing held. I read that the EEC might be the problem, if EEC relay picks up before ignition is on so I used my spare. I haven't checked the relay circuit power with key off. May go out and verify now. I think the fuel pump relay gets power from EEC relay when ignition is on.
Stay tuned
Stay tuned
Roast em' if you got 'em
Joined: Mar 2005
Posts: 22,017
Likes: 9,972
From: Rio Rancho, NM
Sorry to hear of your fuel pump woes.
How does the EEC control the fuel pump? Does it energize the circuit or ground the circuit. My guess would be that the computer controls the ground side......but, I've been wrong before (just ask my wife....LOL)
Good luck with it
Bobby
How does the EEC control the fuel pump? Does it energize the circuit or ground the circuit. My guess would be that the computer controls the ground side......but, I've been wrong before (just ask my wife....LOL)
Good luck with it
Bobby
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Cargo Master
Joined: Sep 2004
Posts: 2,757
Likes: 138
From: Alberta Canada
One problem solved
Had time to look into fuel pump relay gremlin yesterday; metered out circuit for EEC relay and Fuel pump relay.
Bobby, fuel pump relay gets power when EEC relay picks up; from ignition switch ON. The reading I did said the EEC relay gets ground from EEC but wiring diagram and tracing show the ground goes directly back to the battery.
So with battery disconnected, I started looking for ground issue in the EEC relay first, it would stay on after ignition turned off ?? I started fooling around with wires under dash, and inadvertently moved the signal assembly, relay turned off ! Pulled assembly apart and tried to clear the wiring to the light, it seems to be a hot wire being grounded in the assembly. That didn't work so disconnecedt light circuit for now, but still have signals.
Plugged fuel relay in with switch off and fuel pump started up ?? So tested relay and it seemed good, but noticed after some time, that the wiring harness was supplying hot to the out going wire to the pump?? Changed wire lead to appropriate spot on relay and voila. I replace the fuel pump relay, but there must be different configurations for different years.
Cruised for rest of the day ! Sorry for long post
Bobby, fuel pump relay gets power when EEC relay picks up; from ignition switch ON. The reading I did said the EEC relay gets ground from EEC but wiring diagram and tracing show the ground goes directly back to the battery.
So with battery disconnected, I started looking for ground issue in the EEC relay first, it would stay on after ignition turned off ?? I started fooling around with wires under dash, and inadvertently moved the signal assembly, relay turned off ! Pulled assembly apart and tried to clear the wiring to the light, it seems to be a hot wire being grounded in the assembly. That didn't work so disconnecedt light circuit for now, but still have signals.
Plugged fuel relay in with switch off and fuel pump started up ?? So tested relay and it seemed good, but noticed after some time, that the wiring harness was supplying hot to the out going wire to the pump?? Changed wire lead to appropriate spot on relay and voila. I replace the fuel pump relay, but there must be different configurations for different years.
Cruised for rest of the day ! Sorry for long post
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Thread Starter
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Cargo Master
Joined: Sep 2004
Posts: 2,757
Likes: 138
From: Alberta Canada
Wipers and speedo
Opted to ptu the electric wipers back in this weekend; couldn't get the vacuum pump working properly, so made some adjustments to the mounting bracket and put in the electric motor. Works for now, until the first rain storm, probably.
Also put the instrument cluster back in yet again, and now have speedometer working ! It reads about 5-10 mph too high but I can calibrate with the electronic sender.
Made a few miles in the truck, the last couple evenings; weather is perfect for it.
Changed oil and may have fixed slow leak in transmission plug, fingers crossed.
Tom
Also put the instrument cluster back in yet again, and now have speedometer working ! It reads about 5-10 mph too high but I can calibrate with the electronic sender.
Made a few miles in the truck, the last couple evenings; weather is perfect for it.
Changed oil and may have fixed slow leak in transmission plug, fingers crossed.
Tom
Fleet Owner
Joined: Jul 2004
Posts: 27,299
Likes: 1,059
From: NM
Laughing Gas
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From: Milford, Michigan
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