 Fuel Pump Power Question |
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| lsintampa |
 Aug 1 2013, 12:05 PM
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Senior Member  Group: Members Posts: 520 Joined: 28-January 13 From: Tampa, FL Member No.: 15,441 Region Association: South East States  |
75 914/4 2.0 FI
I pulled out my fuel pump and hooked it up to 12V supply and it just doesn't spin like I'd expect. SO, I assume it's dead. In any event, I hook up a voltmeter to where the fuel pump connects and when I turn the ignition to the on position, all I get is about .50 volts. Shouldn't I be getting a reading near 12 volts? The wire I'm thinking is the fuel pump power is black / red - it's the only wire near where the fuel pump mounts, so I assume that at least is correct. Thanks, Len |
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| SirAndy |
Aug 1 2013, 12:19 PM
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Resident German Group: Admin Posts: 41,669 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California |
QUOTE(lsintampa @ Aug 1 2013, 11:05 AM)  Shouldn't I be getting a reading near 12 volts? The fuel pump is powered by the FI brain. Just turning on the ignition without cranking the starter will only run the pump for a very short time to build up pressure. The pump will not see 12V until you start cranking or the engine is running. Again, power to the pump is controlled by the FI brain ... (IMG:style_emoticons/default/popcorn[1].gif) |
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Posts in this topic
lsintampa Fuel Pump Power Question Aug 1 2013, 12:05 PM
lsintampa
Shouldn't I be getting a reading near 12 volt... Aug 1 2013, 12:33 PM
76-914 That piece is just a 4 prong spade fitting that is... Aug 1 2013, 12:41 PM The Cabinetmaker NAPA has a replacement Bosch pump for under a hund... Aug 1 2013, 01:14 PM lsintampa
NAPA has a replacement Bosch pump for under a hun... Aug 2 2013, 07:03 AM Jeff Bowlsby The three FI harness grounds have 3 lugs...looks l... Aug 1 2013, 05:07 PM lsintampa
The three FI harness grounds have 3 lugs...looks ... Aug 1 2013, 06:54 PM lsintampa
The three FI harness grounds have 3 lugs...looks ... Aug 4 2013, 02:47 PM stugray When I bought my last 914, the PO gave me a bunch ... Aug 2 2013, 08:39 AM The Cabinetmaker napa #N69133. In stock in tulsa 92.95 Aug 2 2013, 10:38 AM lsintampa
napa #N69133. In stock in tulsa 92.95
Got it -... Aug 2 2013, 10:48 AM jim_hoyland Is that FI part # just for 2 liter systems ? Could... Aug 3 2013, 07:10 AM The Cabinetmaker Yes. Its the same as the 75/76 1.8L Aug 3 2013, 07:30 AM Jeff Bowlsby Hey Len, I have an extra 3 prong ground lug I can... Aug 4 2013, 03:29 PM |
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