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Need a Wiring Diagram for 96 502 efi system

622 Views 14 Replies 3 Participants Last post by  MarkyMark
I'm thinking I may have crossed 2 injector wires on my motor. Does anyone have a diagram for the efi system ?

How would a motor act it 2 injector wires were switched ??
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Is this it???

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thanks Rick. I found that on BAM's site, but can't really make anything out pretaining to injector wiring colors, etc.
Resolution is to poor to blow up. I'll look some more.
MarkyMark said:
thanks Rick !!
Your Welcome Mark. I hope you can read it. It's the best I can do here at work.
The injection system is a bank to bank system, so as long as the 2 injectors are on the same bank then it doesn't matter what order they are in, they are tied together anyway. If you have one from the left bank tied into the right bank, then you could overload the injector driver and cause a problem. but if 2 were swaped, you would not notice a difference in the way it runs.

Frank
Did you mean you have the + and - swaped? or the injector wired to another injector?
Frank....

I mean the injector plug may be on the wrong injector. I was unsure about #'s 2 and 4.

Someone told me what you said about being a banked firing system......but that diagram shows a different color wires for the same bank of injectors. It's almost like when the bank fires, 2 from one side will fire, and 2 from the other. Correct me if I'm wrong ?

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that pic sucked. the one in the link above is more clear and readable.
MarkyMark said:
that pic sucked. the one in the link above is more clear and readable.
heres the pic in the other link
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#1 - Pink/Green......#2 - Pink/Blue
#3 - Pink/Blue.........#4 - Pink/Green
#5 - Pink/Blue.........#6 - Pink/Green
#7 - Pink/Green.......#8 - Pink/Blue

If I'm reading it right, it seems like if 2 & 4 were swapped it would be a problem....but if 4 & 6 were swapped it would be ok. ????????
Cyl. 2 and 4 are on separate banks. Merc is trying to stay close to the firing order with the bank system.
1-8-7-2-6-5-4-3 The first 4 are banked then the last 4. I don't think you will notice any performance difference if they were swaped, especially at higher rpm. It may idle a little goofy though.

Frank
yep.....that's my issue...."goofy idle" when it warms up. runs fine at rpm.
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