 3.2l conversion died on a ride, appears I have an electrical problem, success! |
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| jim912928 |
 Sep 10 2023, 01:39 PM
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Senior Member  Group: Members Posts: 1,487 Joined: 8-January 04 From: Granger, IN Member No.: 1,536 Region Association: Upper MidWest  |
Took out the 914 and it just stopped cold during the drive. It appears the fuel pump is not running. I did tow it back and ran some rudimentary electrical tests (I'm not good at wiring). I get no power to the fuel pump. I then pulled the dme relay and I do get 12v on 30, 12v on 86, no voltage on 87 or 87b.
This is an 84 3.2l thoughts? |
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| jim912928 |
Sep 12 2023, 09:52 PM
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Senior Member Group: Members Posts: 1,487 Joined: 8-January 04 From: Granger, IN Member No.: 1,536 Region Association: Upper MidWest |
I was testing if my fuel pump was any good (only 2 years old) and if the dme relay was passing on voltage.. The dme relay is original and probably should be replaced anyhow. I have the dme pinout so I have a feel for which ones are from the speed sensors….anybody know what I could test with my ohm meter while cranking at the sensor pins to see if they are working?
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| Steve |
Sep 13 2023, 09:04 AM
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#3
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914 Guru Group: Members Posts: 5,857 Joined: 14-June 03 From: Laguna Niguel, CA Member No.: 822 Region Association: Southern California 
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QUOTE(jim912928 @ Sep 12 2023, 08:52 PM)  I was testing if my fuel pump was any good (only 2 years old) and if the dme relay was passing on voltage.. The dme relay is original and probably should be replaced anyhow. I have the dme pinout so I have a feel for which ones are from the speed sensors….anybody know what I could test with my ohm meter while cranking at the sensor pins to see if they are working? The Bentley manual has all the test points for the sensors as well as readings on the DME computer and info on how to test the fuel pressure. I also bought an aftermarket fuel pressure gauge. I connected it with a hose to the special port on the fuel rail to check the pressure on the fuel injection. You have to take out the metal ball when you test it. When I first installed my 3.2 it would not start and the fuel pressure was twice as high as it should of been. It was a pinched fuel line under the tank. |
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Posts in this topic
jim912928 3.2l conversion died on a ride Sep 10 2023, 01:39 PM
worn
Took out the 914 and it just stopped cold during ... Sep 10 2023, 05:14 PM
porschetub
Took out the 914 and it just stopped cold during... Sep 11 2023, 10:59 PM r_towle Two things I did after towing home my 84 911
I bou... Sep 10 2023, 07:24 PM jim912928 Thanks all….looked up the relay pinouts and will... Sep 11 2023, 11:38 AM SirAndy +1 for the DME relay.
I always carry a spare wit... Sep 11 2023, 11:47 AM ClayPerrine DME relays have suckdilliuckucked since their inve... Sep 11 2023, 12:59 PM worn
DME relays have suckdilliuckucked since their inv... Sep 11 2023, 05:56 PM Steve I read there are two sensors on the flywheel. One... Sep 11 2023, 09:09 PM davehg
I read there are two sensors on the flywheel. On... Sep 11 2023, 10:56 PM ClayPerrine For those of you that want to get rid of the probl... Sep 12 2023, 07:10 AM Justinp71 Why I stick with carbs... :). No in all seriousnes... Sep 12 2023, 08:04 AM Steve
Why I stick with carbs... :). No in all seriousne... Sep 12 2023, 08:23 AM ConeDodger
Why I stick with carbs... :). No in all seriousne... Oct 10 2023, 10:31 AM jim912928 Ok, I jumpered 30 (always hot), to 87 and 87b and ... Sep 12 2023, 04:33 PM arbitrary
Ok, I jumpered 30 (always hot), to 87 and 87b and... Sep 12 2023, 08:25 PM r_towle
Ok, I jumpered 30 (always hot), to 87 and 87b an... Sep 12 2023, 09:16 PM ClayPerrine
[quote name='arbitrary' post='3101554' date='Sep ... Sep 14 2023, 05:42 AM jim912928 Thanks Clay for the diagrams. Sep 12 2023, 04:54 PM Root_Werks Would think if you could do the "Y" jump... Sep 13 2023, 08:38 AM jim912928 Root…when I did the Y jumper the fuel pump did r... Sep 13 2023, 04:32 PM jim912928 Finally got back to this. Found reference video o... Sep 18 2023, 04:43 PM ClayPerrine
Finally got back to this. Found reference video ... Sep 18 2023, 05:25 PM jim912928 Thanks Clay! Sep 18 2023, 07:59 PM porschetub
Thanks Clay!
:agree: I had the speed sensor... Sep 19 2023, 07:22 PM porschetub Sorry 2 x post Sep 20 2023, 01:37 PM jim912928 Success! I replaced both reference sensors an... Oct 9 2023, 03:48 PM |
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