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| BCinSC |
May 29 2011, 08:42 AM
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Nothing but Trouble ![]() ![]() Group: Members Posts: 138 Joined: 8-June 03 From: Wakefield, MA Member No.: 800 Region Association: North East States |
So Blanche ('73 White 914-4 1.7L) was running great last summer until she simply stopped on I-95 in Burlington, MA. Simply no spark anymore. Having no time to deal with it, she sat until today. I figured out the spark problem, but now the fuel pump, won't. Familiar with this type of issue, I open the relay board and check the fuse and the relay. I've got 12V where I'm suppose to - both sides of fuse, pin85 of FP relay when key on (FI Brain energizes to close circuit to join pin30 and pin87 I believe). PIN13 of connector closest to firewall, which diagram says goes out to FP itself, shows continuity to ground, so I'm guessing broken wire somewhere. Sounds reasonable/plausible? Fuel Pump was functional before I put her away.
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| Tom |
May 29 2011, 09:12 AM
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#2
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Advanced Member ![]() ![]() ![]() ![]() Group: Members Posts: 2,139 Joined: 21-August 05 From: Port Orchard, WA 98367 Member No.: 4,626 Region Association: None |
Bruce,
Just went thru this yesterday with another member. 1- with the fuel pump relay removed, jump pin 13 and 14 of the 14 pin connector. Pin 14 is always hot, so you don't need the key on. If the pump runs, the pump and wiring are good, and the problem is in the relay board somewhere - most likely ( I can never be 100% sure with these cars). If pump does not run, check with voltmeter to ensure 12 Volts at pin 14. This comes from the batt +, one of the 4 large red wires attached at the batt. If the voltage is present, then you have a wiring or fuel pump problem. Let me know what you find and we can go from there to find the problem. Tom PS; you will continuity thru the pump brushes to ground, don't let that throw ya. |
BCinSC Fuel Pump will not run May 29 2011, 08:42 AM
SLITS Pumps do gum up or fail.
Run hot wire to + termin... May 29 2011, 09:05 AM
Elliot Cannon
Pumps do gum up or fail.
Run hot wire to + termi... May 29 2011, 09:13 AM
SLITS
Pumps do gum up or fail.
Run hot wire to + term... May 29 2011, 09:37 AM
Elliot Cannon
[quote name='Elliot Cannon' post='1485200' date='... May 29 2011, 01:38 PM
BCinSC Is that Gumby with a Blunt? Anyway, I think you a... May 29 2011, 09:12 AM
BCinSC Argh. Swapped pumps and same deal. Could FI Brai... May 29 2011, 10:11 AM
SLITS
Argh. Swapped pumps and same deal. Could FI Bra... May 29 2011, 10:16 AM
BCinSC I don't get it. I have 12V at Pin30 of Relay.... May 29 2011, 10:26 AM
BCinSC Mess with it long enough, and miraculously, it wil... May 29 2011, 10:34 AM
Tom The relays sometimes don't fit tight in the so... May 29 2011, 10:51 AM
BCinSC Not quite the contortionist I used to be. Can... May 29 2011, 12:09 PM
BCinSC Hooked up known good spark plug to wire #1 and cra... May 29 2011, 12:17 PM
benalishhero No spark? Are you running points and condensor? May 29 2011, 01:03 PM
BCinSC Yes. Both relatively new (couple thousand miles a... May 29 2011, 01:34 PM
BCinSC I reiterate that I was doing 60+ on the highway wh... May 29 2011, 01:36 PM
Elliot Cannon I just had a crap load of electrical problems with... May 29 2011, 01:42 PM
BCinSC Checked points more closely and found that the met... May 29 2011, 02:59 PM
djm914-6 Sounds like you're having fun. WHo's watch... May 29 2011, 03:08 PM
BCinSC Kids in Maine. 3 dogs in kennel. Other 4 milling... May 29 2011, 06:36 PM
djm914-6 That's odd.... was the registry open today? May 29 2011, 06:57 PM![]() ![]() |
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