 1972 1.7 - Fuel pump not starting when key is turned, Problem with fuel pump |
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| itsmagic |
 Aug 8 2014, 10:46 AM
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#1
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Newbie  Group: Members Posts: 10 Joined: 3-June 05 From: Hyde Park, NY Member No.: 4,193  |
My 1972 1.7 914 recently decided to not start. I quickly noticed that the fuel pump is not running briefly like it should after the ignition key is turned. I verified that the relays on the relay board (Master, Fuel Pump, Blower) are all good by trying them on the headlight motors. I then verified that the two fuses on the relay board are good. Next, I popped the cap on the fuel pump relay and pressed it... the fuel pump runs when I do this. (The car will then start and run for a few seconds if I start it). Sooooo, I am at a loss... The fuel pump is fine, relay board is fine, relays are fine... what could be causing the fuel pump to not activate? Thank you for any advice. Wayne
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| Cap'n Krusty |
Sep 16 2014, 11:01 PM
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#2
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Cap'n Krusty Group: Members Posts: 10,794 Joined: 24-June 04 From: Santa Maria, CA Member No.: 2,246 Region Association: Central California |
Remember what I said earlier. The main relay powers up the ECU, the ECU powers up the relay. Check the main relay first. The one just forward of the pump relay. Use the heater relay as a test unit, assuming it works. The board could be bad, too.
The Cap'n |
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Posts in this topic
itsmagic 1972 1.7 - Fuel pump not starting when key is turned Aug 8 2014, 10:46 AM
silverbullet75 It's been a while since I've seen this, bu... Aug 8 2014, 11:01 AM
itsmagic Where/what is 'the flapper' ? Thanks. Aug 8 2014, 11:05 AM Cap'n Krusty Your car doesn't have one. 914 with L-jet onl... Aug 8 2014, 11:09 AM sfrenck There is a nice flowchart for troubleshooting fuel... Aug 8 2014, 11:43 AM Tom To give a little more help, here is a more detaile... Aug 8 2014, 11:58 AM pt_700 my d-jet was one of those rare computer failures.
... Aug 8 2014, 12:05 PM silverbullet75 Sorry for the wrong/misleading info! Aug 8 2014, 12:10 PM rhodyguy so it dies when you stop pressing on the relay? sw... Aug 9 2014, 11:30 AM itsmagic Follow up: Thanks for everyones advice. I carefull... Aug 24 2014, 11:43 AM The Cabinetmaker Great job Wayne. And thanks for checking back and ... Aug 24 2014, 12:55 PM Chris Pincetich I AM GOING THROUGH THE EXACT SAME THING as Wayne, ... Sep 14 2014, 09:01 PM jcd914
The "exposed relay test" does not mean ... Sep 16 2014, 10:37 PM Chris Pincetich :bump:
:confused:
:headbang: Sep 16 2014, 01:26 PM Chris Pincetich thanks for helping! :beer2:
I know my curren... Sep 17 2014, 10:14 AM Chris Pincetich OK, did some testing and ready to do more once I g... Sep 20 2014, 07:46 PM Tom You can narrow down the search some by doing the f... Sep 21 2014, 01:39 AM Chris Pincetich There was no ground signal at the #3 connection of... Sep 22 2014, 11:24 AM Tom Chris,
Yes, If the wires and connections are go... Sep 22 2014, 12:38 PM Chris Pincetich Thanks for confirming, Tom. :beer2:
My 914 needs... Sep 22 2014, 01:38 PM Chris Pincetich Installed an ECU brain - mine was an early one wit... Oct 5 2014, 10:49 PM |
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