All S4 EFI harnesses the same?
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All S4 EFI harnesses the same?
Need an EFI harness for 88 N/A coupe. Are all S4 EFI harnesses the same? any diff between N/A and turbo harnesses? Couldn't see two different ones shown in the FSM.
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Same answer here as from 88 T-66 above.
You probably could use a post June 87 non turbo harness though, since that is when the Solenoid Resistor Package was eliminated and high impedence injectors were introduced.
JUST FYI: If you look at the CONTROL UNIT pages out of the Fuel and Emissions section of the ECU, and compare Turbo and Non turbo pinouts you'll see approx three or four differences there also. Plus you have to consider the interface plugs b/t the EM and the Front harness, which consists of two ORNAGE colored plugs.
The pinouts b/t the Turbo orange plugs and the non turbo orange plugs is quite a bit different. See attached jpgs.
You probably could use a post June 87 non turbo harness though, since that is when the Solenoid Resistor Package was eliminated and high impedence injectors were introduced.
JUST FYI: If you look at the CONTROL UNIT pages out of the Fuel and Emissions section of the ECU, and compare Turbo and Non turbo pinouts you'll see approx three or four differences there also. Plus you have to consider the interface plugs b/t the EM and the Front harness, which consists of two ORNAGE colored plugs.
The pinouts b/t the Turbo orange plugs and the non turbo orange plugs is quite a bit different. See attached jpgs.
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09-16-15 01:25 PM