Originally posted by Reyhan335
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Originally posted by delamaize View PostWell there is your problem, Now the real question, Why.
Well my friend told me to get an eBay fuel pump. So now I ordered a real one. Hopefully that's it. But I doubt it would do anything since the injectors are only at 6v
Sent from my iPhone using Tapatalke30Ls1 Swap IG: 1dirty30
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Hook jumper cables up to the motor and then parts of the body to see if grounding is your problem before you go replace the ground strap.1989 325i LS Swap (Money Pit):https://www.r3vlimited.com/board/sho...d.php?t=244933
COTM Feb 2019: https://www.r3vlimited.com/board/sho...d.php?t=428404
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If you're measuring voltage from the injector +12V to the battery negative terminal, then your problem is not grounds. If you're not measuring it that way, measure it that way.
You have something messed up in the injector supply circuit.
Now, if you're measuring from injector +12V terminal to injector - terminal (which should go straight to the ECM), and it shows +6V, then that's a problem. In this case, check continuity from the injector - terminal to the battery negative terminal. If it reads other than open-circuit, then there's a problem in your ECM. You also might want to unplug the ECM and verify continuity and isolation of the injector signal wires.
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Originally posted by The Dark Side of Will View PostIf you're measuring voltage from the injector +12V to the battery negative terminal, then your problem is not grounds. If you're not measuring it that way, measure it that way.
You have something messed up in the injector supply circuit.
Now, if you're measuring from injector +12V terminal to injector - terminal (which should go straight to the ECM), and it shows +6V, then that's a problem. In this case, check continuity from the injector - terminal to the battery negative terminal. If it reads other than open-circuit, then there's a problem in your ECM. You also might want to unplug the ECM and verify continuity and isolation of the injector signal wires.
it's hard to explain.
when you pull the clip off, theres two ports. i put the volt meter to both of those.e30Ls1 Swap IG: 1dirty30
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Originally posted by Reyhan335 View Postwhat i did was turn the key on, used a volt meter to the plug on the harness. and it showed 6v
it's hard to explain.
when you pull the clip off, theres two ports. i put the volt meter to both of those.
I would check both pins to ground, if the ECU is pulsing one of the pins you might not see full voltage. One should have a steady 12v when checked to ground. The "ground" pin isn't really to ground, it's to the ECU...
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Is your OBD2 port functional? Ours would not start until the power and ground
wires were good.E30-LS1 aka. 357is
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Originally posted by garretvs View PostIs your OBD2 port functional? Ours would not start until the power and ground
wires were good.
it starts perfectly fine on starting fluid. but under it's own fuel it won't. i have a new fuel pump coming thursday. hopefully it's that.
also i'll try to individually check the injectors tonight to see if there's 12 or 6ve30Ls1 Swap IG: 1dirty30
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Originally posted by jon2681 View Postif your aftermarket wiring harness still uses a pink wire for one side of the injector wiring plugs that should be +12v key on 100% time , check to a known good ground not the other pin on the injector plug the other wire is signal wire from ecm and only gets grounded when pulsede30Ls1 Swap IG: 1dirty30
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