Putting a 4R70W behind the 1991 5.0 TBird, using a 94/95 Mustang GT EEC.
95% of the pins are in the same place, the one's that are not used on the '91 EEC are the spots left open for the transmission controls for the 94/95 EEC. The problem is there are a few outputs from the 91 EEC that have no place to go on the 94/95 and there are a few outputs coming from the 94/95 EEC that I have no where to put for the 91 engine/setup. I'll explain this in detail:
Outputs/Inputs 1991 EEC has that 94/95 EEC does not:
Pin 30 - Circuit 32 (R/LB) - Neutral Drive Switch Input (NDS)
Pin 31 - Circuit 100 (W/R) - Thermactor Air Diverter (TAD) Output
Pin 32 - Circuit 836 (O/W) - Programmable Ride Control Output
Pin 34 - Circuit 305 (LB/PK) - Data Output Line (Fuel Flow)
Outputs/Inputs 1994/95 EEC has that 91 EEC does not (aside from trans functions):
Pin 31 - Circuit 190 (W/O) - Secondary Air Injection Bypass (AIRB) Solenoid
Pin 32 - Circuit 039 (LG/P) - High Fan Control (this isn't needed but not sure if it will throw a code if nothing is connected to this pin)
Pin 34 - Circuit 200 (BR) - Secondary Air Injection Diverter (AIRD) Solenoid
Pin 42 - Circuit 883 (PK/LB) - A/C High Pressure Switch
Pin 55 - Circuit 228 (DB) - Low Fan Control (again, this isn't needed but not sure if it will throw a code if nothing is connected to this pin)
Anyone have any ideas on some of this, if it's in the first list it's a bigger deal because I'm going to need something that tells or receives those functions (or maybe not) in the second case it's more an issue of throwing codes or it telling another part of the engine to function a certain way because it doesn't see the input it wants.
Any help is greatly appreciated.
Thanks,
J. Turmel
95% of the pins are in the same place, the one's that are not used on the '91 EEC are the spots left open for the transmission controls for the 94/95 EEC. The problem is there are a few outputs from the 91 EEC that have no place to go on the 94/95 and there are a few outputs coming from the 94/95 EEC that I have no where to put for the 91 engine/setup. I'll explain this in detail:
Outputs/Inputs 1991 EEC has that 94/95 EEC does not:
Pin 30 - Circuit 32 (R/LB) - Neutral Drive Switch Input (NDS)
Pin 31 - Circuit 100 (W/R) - Thermactor Air Diverter (TAD) Output
Pin 32 - Circuit 836 (O/W) - Programmable Ride Control Output
Pin 34 - Circuit 305 (LB/PK) - Data Output Line (Fuel Flow)
Outputs/Inputs 1994/95 EEC has that 91 EEC does not (aside from trans functions):
Pin 31 - Circuit 190 (W/O) - Secondary Air Injection Bypass (AIRB) Solenoid
Pin 32 - Circuit 039 (LG/P) - High Fan Control (this isn't needed but not sure if it will throw a code if nothing is connected to this pin)
Pin 34 - Circuit 200 (BR) - Secondary Air Injection Diverter (AIRD) Solenoid
Pin 42 - Circuit 883 (PK/LB) - A/C High Pressure Switch
Pin 55 - Circuit 228 (DB) - Low Fan Control (again, this isn't needed but not sure if it will throw a code if nothing is connected to this pin)
Anyone have any ideas on some of this, if it's in the first list it's a bigger deal because I'm going to need something that tells or receives those functions (or maybe not) in the second case it's more an issue of throwing codes or it telling another part of the engine to function a certain way because it doesn't see the input it wants.
Any help is greatly appreciated.
Thanks,
J. Turmel