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Old 06-20-2018, 04:41 PM   #1
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Boxster without fuel injector pulse on #6

I have a quick question.........I have a miss on Cylinder 6. Noid light shows no fuel pulse signal on #6. There is power, but not getting the ground signal to the injector. Can anyone tell me where the signal ground comes from? Looked for the pinout for the DME, but no clear answer. Any info would be helpful. Thanks.

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Old 06-20-2018, 11:08 PM   #2
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what year is your car?
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Old 06-21-2018, 05:08 AM   #3
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Itís a 1997
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Old 06-25-2018, 11:46 AM   #4
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bump

anythought?
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Old 06-25-2018, 12:52 PM   #5
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Can anyone tell me where the signal ground comes from? Looked for the pinout for the DME, but no clear answer. Any info would be helpful. Thanks.
A quick look at a '97 diagram I found online shows that the ground for the pulse comes from pin 33 on the DME.

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Old 06-25-2018, 03:31 PM   #6
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Thank you

I will try to chase that down, I was able to find the Positive side being number 16. Thanks
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Old 06-28-2018, 10:38 AM   #7
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Dead injector ground

I ordered a used engine wiring harness for the Boxster. I am hoping it is in better shape, but who knows. I tried removing the sheathing on the current harness and it quickly became clear that there is more going on in there than I am equipped to deal with. Even if I found the broken wire wrapping it all back up together in some kind of orderly fashion seems impossible. I will report what happens when I get the new harness.

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