 Fuel pump stopped working a couple of days ago, could it be the relay board |
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| JimN73 |
 Sep 24 2017, 11:50 AM
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Senior Member  Group: Members Posts: 535 Joined: 6-October 07 From: Gig Harbor Member No.: 8,192 Region Association: Pacific Northwest  |
I have no power at the pump.
I have 12.4 volts at pin #13 on the relay board. No power at pin #5 or 7, old eyes can't see the stripe colors very well. Fuses are good. Am I missing something? Thanks in advance. |
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| injunmort |
Oct 7 2017, 11:23 AM
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Senior Member Group: Members Posts: 1,024 Joined: 12-April 10 From: sugarloaf ny Member No.: 11,604 Region Association: North East States |
here is a simple test, fast, effective and isolates the issue: run your hot wire directly from the fuel pump to the positive post of the coil. assuming you have power at the coil in the ignition position. i am suspect of your diagnostics. fuel pumps fail, relay boards are old. if you power up the ignition, your pump will run continuously. if it does, your problem is in the wiring. if the pump does not run, your pump failed. pretty simple really. if the car wont start but the pump runs, it aint the fuel delivery or a wiring issue to power the pump problem. not injected, no need for volt meters and adding questions as to where next.
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Posts in this topic
JimN73 Fuel pump stopped working a couple of days ago Sep 24 2017, 11:50 AM
JimN73 and:
3.5 psi pump for carbs, and
the relays are ... Sep 24 2017, 12:35 PM
Dave_Darling
and:
3.5 psi pump for carbs, and
the relays are... Sep 24 2017, 03:00 PM JimN73
and:
3.5 psi pump for carbs, and
the relays ar... Sep 24 2017, 03:32 PM Elliot Cannon Mine stopped working about a month ago. I tapped ... Sep 24 2017, 01:49 PM JimN73
Mine stopped working about a month ago. I tapped... Sep 24 2017, 02:25 PM JimN73 After cleaning some corrosion around pin13 and 14,... Sep 29 2017, 07:24 PM Spoke Power to the fuel pump relay is provided by the po... Sep 30 2017, 09:37 PM euro911 When you turn the key to the 'on' position... Oct 1 2017, 12:55 AM Olympic 914 try this troubleshooting sequence. it worked for m... Oct 1 2017, 09:45 AM cary Here's what I finally did on Matt's car. H... Oct 1 2017, 09:51 AM JimN73 Thanks, all. More troubleshooting and maybe some ... Oct 1 2017, 05:10 PM JimN73 Well, here is the final answer - I think.
Thanks ... Oct 6 2017, 01:22 PM euro911 You can probe the wire outbound of the connector t... Oct 6 2017, 08:08 PM JimN73
You can probe the wire outbound of the connector ... Oct 7 2017, 10:57 AM euro911
You can probe the wire outbound of the connector... Oct 7 2017, 01:26 PM Spoke I'm a bit confused on what you have found so f... Oct 7 2017, 11:43 AM euro911 ... As an aside, I've found when working in th... Oct 7 2017, 01:16 PM JimN73 Here's what I have done. I think I covered eve... Oct 9 2017, 10:04 AM |
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