 fuel pump not running, car starts but shuts off |
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| effutuo101 |
 Sep 24 2011, 02:55 PM
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#1
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Advanced Member  Group: Members Posts: 2,734 Joined: 10-April 05 From: Lemon Grove Member No.: 3,914 Region Association: Southern California  |
I am working on the 914 today.
When you turn the key on, I get about 1.5 seconds of fuel pump sound. I can then start the car. IF it stays running, the idle goes very high then cuts out. You can hear the fuel pump start again and the car revs high again. Today, the car starts, but as soon as it is running, the fuel pump does not stay running and the car shuts off. Any thoughts? |
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Replies(1 - 11)
| tod914 |
Sep 24 2011, 03:41 PM
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#2
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Advanced Member Group: Members Posts: 3,755 Joined: 19-January 03 From: Lincoln Park, NJ Member No.: 170 |
You can rule out a bad pump by running wires directly off the battery to it. Disconnect the battery, unplug the pump, then run the + and - wires to the pump and battery, and see if it runs without cutting out.
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| effutuo101 |
Sep 24 2011, 05:01 PM
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#3
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Advanced Member Group: Members Posts: 2,734 Joined: 10-April 05 From: Lemon Grove Member No.: 3,914 Region Association: Southern California |
Yep. Did that. New pump. So that is good.
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| messix |
Sep 24 2011, 05:02 PM
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#4
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AKA "CLUTCH KILLER"! Group: Members Posts: 6,995 Joined: 14-April 05 From: between shit kickers and pinky lifters/ puget sound wa.north of Seattle south of Canada Member No.: 3,931 Region Association: Pacific Northwest |
l or d jet?
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| tod914 |
Sep 24 2011, 05:11 PM
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#5
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Advanced Member Group: Members Posts: 3,755 Joined: 19-January 03 From: Lincoln Park, NJ Member No.: 170 |
The AAR on D-jet, not sure about L, shares the same fuze on the relay board. You can try disconnecting the AAR and cleaning the contact for the fuze. See if that makes a difference. Usually the fuze blows though. One more thing to rule out.
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| effutuo101 |
Sep 24 2011, 07:49 PM
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#6
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Advanced Member Group: Members Posts: 2,734 Joined: 10-April 05 From: Lemon Grove Member No.: 3,914 Region Association: Southern California |
Hi Troy! It is an early 2.0
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| messix |
Sep 24 2011, 07:55 PM
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#7
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AKA "CLUTCH KILLER"! Group: Members Posts: 6,995 Joined: 14-April 05 From: between shit kickers and pinky lifters/ puget sound wa.north of Seattle south of Canada Member No.: 3,931 Region Association: Pacific Northwest |
QUOTE(effutuo101 @ Sep 24 2011, 06:49 PM)  Hi Troy! It is an early 2.0 fuel harness connections or at the ecm. sounds like it's starting on cold enrichment and has nothing after that try dif ecm |
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| 70_914 |
Sep 25 2011, 12:34 AM
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#8
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Member Group: Members Posts: 395 Joined: 4-December 09 From: Roy, WA Member No.: 11,096 Region Association: Pacific Northwest |
Ignition switch intermittent? Is there power to your fuel pump when the car dies?
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| swl |
Sep 25 2011, 05:06 AM
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#9
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Senior Member Group: Members Posts: 1,409 Joined: 7-August 05 From: Kingston,On,Canada Member No.: 4,550 Region Association: Canada |
Chris do you know that the fuel pump is shutting off electrically? If it runs during the first 1.5 seconds of prime it is not likely that it will shut down once the car is running.
Could it be something as simple as a blocked fuel supply? Have you done any other work on the fuel plumbing that might have wound up changing the direction of fuel flow? What was the source of the new fuel pump. IIRC there is a chinese knock off of the three port out there that has the ports reversed. |
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| effutuo101 |
Sep 26 2011, 08:33 AM
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#10
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Advanced Member Group: Members Posts: 2,734 Joined: 10-April 05 From: Lemon Grove Member No.: 3,914 Region Association: Southern California |
Checked the fuel pump and routing. That is all good. I am going to try a new ECM today. I will report back in.
I did find that the car would start and run as long as I was pumping the gas. As soon as the car would die, the fuel pump would run. Almost like there is an ignition issue. |
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| effutuo101 |
Sep 26 2011, 03:41 PM
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#11
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Advanced Member Group: Members Posts: 2,734 Joined: 10-April 05 From: Lemon Grove Member No.: 3,914 Region Association: Southern California |
ok, swapped out the ECU and the car runs now. I just have to sort out why the idle is so high and I should be good.
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| tod914 |
Sep 26 2011, 03:44 PM
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#12
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Advanced Member Group: Members Posts: 3,755 Joined: 19-January 03 From: Lincoln Park, NJ Member No.: 170 |
Double check the wiring on the coil. The car will still run, but over time it will fry the ECU. Glad your up and running again.
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