Af cam wiring?

redws6rocket

redws6rocket

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Hey guys been searching, we put a socal 9100af in a lly. What's the easiest way to swap injector wiring. Can it be done at the ficm? Thanks for any help guys!
 
duratothemax

duratothemax

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Mark, do you have to change the actual "injector output" wires/pins at the FICM, or can you alternatively change the "injector trigger/signal" wires/pins at the ECM??? Have you tried doing that instead?
 
catman3126

catman3126

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Some tuners can change the firing order in your tune also. Idk what they charge but theres a few that can do this if you send them your tune.
 
DPC

DPC

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MarkBroviak said:
Has to be done at the ficm or it will set codes. Tried at the ecm first cause it was easier but the ficm is only way to do it without issues.
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Will this set codes like P1223 and P1232 Fuel injector open circuit? Causes a rough idle. I have checket the entire harness from the ECM to the injectors with a DMM and no open circuits or shorts. I have switched out FICM, swapped injectors, checked valves, and compression and still have the same two codes. Balance rates for #1 and #4 are +15 and idle. When I do a cylinider cut out test it only makes a slight difference for #1 and #4 compared to the rest. Mine was swithed at the bale connector with a kit I bought. Thanks.
 
duratothemax

duratothemax

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MarkBroviak said:
Has to be done at the ficm or it will set codes. Tried at the ecm first cause it was easier but the ficm is only way to do it without issues.
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Interesting! Thanks for the info.

I wonder why it sets codes? Maybe the FICM has the stock firing order hard-coded into it, so if it sees the ECM sending "injector trigger" signals that are the wrong firing order and dont match up with what the FICM is getting from the CKP and CMP sensors (#1 TDC reference), it realizes something is wrong and limps/codes???

Do you happen to remember what codes were set?
 
duratothemax

duratothemax

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DPC said:
Will this set codes like P1223 and P1232 Fuel injector open circuit? Causes a rough idle.
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Doubt it. The codes that will be set with swapped firing order at the ECM are probably "injector control circuit" codes.

Still sounds like you have an intermittent wiring harness problem on the "output" side of the FICM.
 
duratothemax

duratothemax

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DPC said:
Mine was swithed at the bale connector with a kit I bought. Thanks.
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Wait...if it was switched at the bale connectors, then that would be changing the injector control circuit wires...which Mark said will set codes. Who did you buy the kit from? Did they know you have an LB7/LLY???
 
DPC

DPC

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duratothemax said:
Wait...if it was switched at the bale connectors, then that would be changing the injector control circuit wires...which Mark said will set codes. Who did you buy the kit from? Did they know you have an LB7/LLY???
Click to expand...

Bought it from So Cal and yes they know its a LB7.
 
JDub

JDub

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catman3126 said:
Some tuners can change the firing order in your tune also. Idk what they charge but theres a few that can do this if you send them your tune.
Click to expand...

I would think it would be safer to actually change the wiring though, if you retuned and the AF cam was forgotten to take into account, some serious/expensive issues would arise.
 
catman3126

catman3126

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JDub said:
I would think it would be safer to actually change the wiring though, if you retuned and the AF cam was forgotten to take into account, some serious/expensive issues would arise.
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Yep just saying it was an option but if you have it reqired and "forget" about the AF cam wouldn't that be the same? lol.
 
LBZ

LBZ

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catman3126 said:
Yep just saying it was an option but if you have it reqired and "forget" about the AF cam wouldn't that be the same? lol.
Click to expand...

Chances of rewiring as opposed to re-tuning are drastically different!
 
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