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Spring cruisin'

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Old 05-23-2016, 02:11 PM
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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
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Old 05-23-2016, 03:02 PM
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I hope the fuel pump didn't pump your engine full of fuel!
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Old 06-05-2016, 01:45 AM
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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
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Old 06-05-2016, 08:22 AM
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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)
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Old 06-05-2016, 12:24 PM
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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.
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Old 06-05-2016, 09:23 PM
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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
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Old 06-05-2016, 09:54 PM
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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
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Old 06-18-2016, 09:32 PM
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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
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Old 06-19-2016, 08:28 PM
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Excellent!
I'm glad you were able to work it out


Happy motoring
Bobby
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Old 06-20-2016, 11:15 PM
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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
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Old 06-21-2016, 01:23 PM
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Quote:
Originally Posted by tip49 View Post
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.

...
Tom
Exactly what happened to me on the drive back from Truckstock '13! The other wiper fell off too and was run over by a semi......


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Old 06-21-2016, 11:19 PM
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Quote:
Originally Posted by ALBUQ F-1 View Post
Exactly what happened to me on the drive back from Truckstock '13! The other wiper fell off too and was run over by a semi......


Ross, I'm sure that wasn't funny then but made me laugh when I read it. And I thought these type of things only happened to me . . .
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