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Gregs
March 12th, 2015, 02:14 AM
Guys,

I'm having some RFI issues with my oil pressure sending unit. I've put some snap on ferrite chokes next to the sensor and they help a little but not enough. I want to place some more chokes on the wires right before they go into the computer. I've looked online but I cant find the pinout for the three wires going into the PCM...they go to the PCM right?

Chevy366
March 12th, 2015, 05:39 AM
https://www.google.com/search?q=ls1+b+pcm+wiring+diagram&tbm=isch&imgil=vMq_si_H-GnV1M%253A%253BXrevgn7AQ8_NOM%253Bhttp%25253A%2525 2F%25252Fwww.rigidracing.com%25252F2013%25252F09%2 5252F02%25252Fair-conditioning-in-a-240sx-with-an-ls1-swap-the-complete-post%25252F&source=iu&pf=m&fir=vMq_si_H-GnV1M%253A%252CXrevgn7AQ8_NOM%252C_&usg=__oISk-2GULmGTTfjw19MBho4-EBo%3D&biw=1200&bih=674&ved=0CDwQyjc&ei=98ABVZGXJsj2yQS1zYDwAQ#tbm=isch&q=ls1b+pcm+wiring+diagram&spell=1&imgdii=_ try this.

Gregs
March 12th, 2015, 05:45 AM
https://www.google.com/search?q=ls1+b+pcm+wiring+diagram&tbm=isch&imgil=vMq_si_H-GnV1M%253A%253BXrevgn7AQ8_NOM%253Bhttp%25253A%2525 2F%25252Fwww.rigidracing.com%25252F2013%25252F09%2 5252F02%25252Fair-conditioning-in-a-240sx-with-an-ls1-swap-the-complete-post%25252F&source=iu&pf=m&fir=vMq_si_H-GnV1M%253A%252CXrevgn7AQ8_NOM%252C_&usg=__oISk-2GULmGTTfjw19MBho4-EBo%3D&biw=1200&bih=674&ved=0CDwQyjc&ei=98ABVZGXJsj2yQS1zYDwAQ#tbm=isch&q=ls1b+pcm+wiring+diagram&spell=1&imgdii=_ try this.

Thanks, but I looked through that this morning and didn't find it. A see Blue 70 is oil level switch but the oil level switch is different than the oil pressure sensor. Blue 70 is the only one that mentions oil at all, that's why I was wondering if the sensor goes somewhere else and not to the PMC.

Gregs
March 12th, 2015, 10:12 AM
Ok, so I was looking at an incomplete chart before. I found red 58 as the oil pressure signal pin. There are three wires going to this sensor. I'm sure the other two are +5v and ground. The pinout I have lists multiple +5v and grounds. Does anyone have a diagram that explicitly says which reference voltage is going to which sensor? I want to put a choke on all three wires at the PCM because I'm thinking that one of them is resonant on the RF frequency I'm having issues with.