ENGINE PERFORMANCE – Ford Mustang GT 1998 – SYSTEM WIRING DIAGRAMS

ENGINE PERFORMANCE

3.8L

3.8L, Engine Performance Wiring Diagrams (1 of 3) for Ford Mustang GT 1998

List of elements for 3.8L, Engine Performance Wiring Diagrams (1 of 3) for Ford Mustang GT 1998:

• (behind
• (engine ctrl sensor harn, near grommet) s240
• (in trans cntrl harn) s126
• (on top of transaxle) digital transmission range sensor
• (right kick panel)
• 4r70w transmission
• A/c system
• Accs input
• Air pump
• Anti-theft system
• C250
• C251
• Ckp (+)
• Ckp (-)
• Ckp shield
• Cooling fans system
• Crankshaft position sensor (center front of engine)
• Cruise control, instrument cluster
• Dash, right of column)
• Data link connector (behind
• Dlc
• Dlc (bus +)
• Dlc (bus -)
• Dtr tr1
• Dtr tr2
• Dtr tr4
• Ect sensor
• Eec fuse 20a
• Egr vacuum
• Electronic pressure control (epc)
• Engine compartment fuse box (left side of engine compartment)
• Evap flow
• Fuel pump
• Fuel sender
• Fuse 10a
• Fuse 15a
• Fuse 20a
• G100 (left front of engine compt)
• G203 (behind dash, at right kick pnl)
• Ground
• Hot at all times
• Hot in run
• Hot in run or start
• I/p fuse panel (left of steering column)
• Iat sensor
• Idm
• Ign coil
• Ignition coil (top front of engine)
• Instrument cluster
• Low fan
• Maf sensor
• Malfunction indicator lamp
• Mil
• Nca
• Powertrain control module (pcm)
• Radio interference capacitor (top front of engine)
• Red
• Rr ho2s
• S108
• S204
• S219
• S228
• S229
• S235
• S250
• S252
• Shft sol #2
• Shift solenoids (ss)
• Sht sol 1
• Solenoid
• Spark plugs
• Tach
• Tcc sol
• Tcs input
• Tft sensor
• Torque converter clutch (tcc) solenoid
• Transmission control switch (right of gear selector)
• Transmission fluid temperature sensor
• Vehicle speed sensor (left rear of transmission)
• Vmv current
• Vss (+)
• Vss (-)

3.8L, Engine Performance Wiring Diagrams (2 of 3) for Ford Mustang GT 1998

List of elements for 3.8L, Engine Performance Wiring Diagrams (2 of 3) for Ford Mustang GT 1998:

• (engine ctrl harn, near grommet)
• (engine ctrl sensor harn, near breakout to inj #5) s123
• (left front of eng compt)
• Air injection reaction pump
• Air injection reaction relay
• Constant control relay module (inside right front fender, behind air filter housing)
• Cooling fans system
• Eec fuse 20a
• Engine compartment fuse box (left side of engine compartment)
• Evaporative emission canister purge valve (right side of engine compt)
• Evaporative emission purge flow valve (right side of engine compt)
• Fuel fuse 20a
• Fuel injectors
• Fuel pump module
• Fuel pump relay
• Fuel tank assembly
• Fuel tank pressure sensor
• G100
• G100 (left front of engine compt)
• G101 (right front of engine compt)
• G302 (below rear of center console)
• Hot at all times
• Inertia fuel shut-off switch (left rear of trunk)
• Mass air flow (maf) sensor (on air cleaner assembly)
• Pcm power relay
• Red
• Red/pnk
• S100
• S108
• S115
• S116 (engine ctrl harn, near breakout to right front brake sensor)
• S127
• S142
• S145 (engine ctrl sensor harn)
• S154 (engine ctrl sensor harn)
• S155
• S205
• S250
• Therm fuse 20a
• Vapor management valve (right side of engine compt)

3.8L, Engine Performance Wiring Diagrams (3 of 3) for Ford Mustang GT 1998

List of elements for 3.8L, Engine Performance Wiring Diagrams (3 of 3) for Ford Mustang GT 1998:

• (behind dash, at right kick panel) s129
• (engine ctrl sensor harn, near breakout to inj #2) s124
• (left front of engine compt) g100
• (main harn, near breakout to multifunction switch)
• (near breakout to fuel inj #6)
• (near breakout to tp sensor) s129
• (rear of eng) s138
• (right kick panel)
• A/c cutout
• A/c system
• Air mngmnt
• Bpp
• Brake pedal position switch (on pedal support)
• C250
• Camshaft position sensor (front of eng, near ign coil)
• Cmp sens
• Differential pressure feedback egr sensor (center rear of engine compt)
• Dpfe
• Dtr tr3a
• Egr vacuum regulator solenoid (rear of throttle body)
• Engine coolant temperature sensor (top front of engine)
• Epc sol
• Evap purge
• Fuel inj 1
• Fuel inj 2
• Fuel inj 3
• Fuel inj 4
• Fuel inj 5
• Fuel inj 6
• Fuel injectors
• Fuel press
• Fuel pump
• Fuse 10a
• Fuse 15a
• G100 (left front of engine s204 compt)
• G203 (behind dash, at right kick panel)
• Hot at all times
• Hot in run or start
• I/p fuse panel (left of steering column)
• Iac valve
• Idle air control valve (top rear of engine)
• Ign coil
• Instrument cluster
• Intake air temperature sensor (on air intake assembly)
• Left front heated oxygen sensor (in exhaust manifold, above flange inboard side)
• Left rear heated oxygen sensor (left rear side of engine, in exhaust manifold)
• Lf ho2s
• Lr ho2s
• Maf sens
• Nca
• Oss sens
• Output shaft speed sensor (left side of trans)
• Power
• Powertrain control module (pcm)
• Pwr gnd
• Red
• Red/pnk
• Ref volt
• Rf ho2s
• Right front heated oxygen sensor (in exhaust manifold, above flange inboard side)
• Right rear heated oxygen sensor (in exhaust, rear of catalytic converter)
• Rr ho2s
• S121 (engine ctrl harn, near grommet)
• S125 (in trans harn)
• S130
• S137
• S142
• S207
• S228
• S241
• S250
• Sig rtn
• Tan
• Tcil
• Throttle position sensor (on throttle body)
• Tp sens
• Transmission control indicator lamp

4.6L

4.6L DOHC, Engine Performance Wiring Diagrams (1 of 3) for Ford Mustang GT 1998

List of elements for 4.6L DOHC, Engine Performance Wiring Diagrams (1 of 3) for Ford Mustang GT 1998:

• (behind dash,
• (engine ctrl sensor harn, near grommet) s240
• (right kick panel)
• A/c system
• Accs input
• Air injection reaction pump
• Air injection reaction relay
• Air pump
• Anti-theft system
• C250
• C251
• Ckp (+)
• Ckp (-)
• Cooling fan
• Cooling fans system
• Crankshaft position sensor (center front of engine)
• Cruise control, instrument cluster
• Dash, right of column)
• Data link connector (behind
• Dlc
• Dlc (bus +)
• Dlc (bus -)
• Ect sensor
• Eec fuse 20a
• Egr vacuum
• Engine compartment fuse box (left side of engine compartment)
• Evap flow
• Fuel pump
• Fuel sender
• Fuse 10a
• Fuse 15a
• Fuse 20a
• G100 (left front of engine compt)
• G101 (right front of engine compt)
• G203 (behind dash, at right kick panel)
• Ground
• Hot at all times
• Hot in run
• Hot in run or start
• I/p fuse panel (left of steering column)
• Iat sensor
• Ign coil
• Ignition coil 1 & 2 (top front of engine)
• Imrc
• Imrc monitor
• Instrument cluster
• Intake manifold runner control (rear of engine)
• Interference capacitor (top front of engine)
• Knock sen 1
• Knock sen 2
• Left knock sensor (between inj 5 & 6)
• Maf sensor
• Malfunction indicator lamp
• Mil
• Nca
• Powertrain control module (pcm)
• Right knock
• Right of column)
• Right radio
• Rr ho2s
• S100
• S108
• S132
• S144
• S145 (engine ctrl sensor harn)
• S154 (engine ctrl sensor harn)
• S155
• S204
• S228
• S229
• S235
• S250
• S252
• S253 (behind
• Sensor (between inj 1 & 2)
• Tach
• Therm fuse 20a
• Vehicle speed sensor (left rear of transmission)
• Vmv current
• Vss (+)
• Vss (-)

4.6L DOHC, Engine Performance Wiring Diagrams (2 of 3) for Ford Mustang GT 1998

List of elements for 4.6L DOHC, Engine Performance Wiring Diagrams (2 of 3) for Ford Mustang GT 1998:

• (behind dash, at right kick panel)
• (engine ctrl sensor harn, near breakout to inj #8) s150
• (left front of eng compt)
• (near breakout to fuel pump resistor)
• (near pcm) fuel pump relay
• (rear of right front fender) fuel pump resistor
• Camshaft position sensor (front of engine)
• Constant control relay module (inside right front fender, behind air filter housing)
• Cooling fans system
• Eec fuse 20a
• Engine compartment fuse box (left side of engine compartment)
• Evaporative emission canister purge valve (right side of engine compt)
• Evaporative emission purge flow valve (right side of engine compt)
• Fuel fuse 20a
• Fuel injectors
• Fuel pump module
• Fuel pump relay
• Fuel tank assembly
• Fuel tank pressure sensor
• G100
• G100 (left front of engine compt)
• G203 (behind dash, at right kick panel)
• G302 (below rear of center console)
• Hot at all times
• Ignition coil 3 & 4 (top front of engine)
• Inertia fuel shut-off switch (left rear of trunk)
• Left radio interference capacitor (top front of engine)
• Mass air flow (maf) sensor (on air cleaner assembly)
• Nca
• Pcm power relay
• Red
• Red/pnk
• S108
• S115
• S116 (engine ctrl harn, near breakout to right front brake sensor)
• S127 (engine ctrl harn, near grommet)
• S142
• S143
• S144
• S153
• S205
• S250
• S251
• Tan/ red
• Tan/red
• Vapor management valve (right side of engine compt)

4.6L DOHC, Engine Performance Wiring Diagrams (3 of 3) for Ford Mustang GT 1998

List of elements for 4.6L DOHC, Engine Performance Wiring Diagrams (3 of 3) for Ford Mustang GT 1998:

• (behind dash, at right kick panel) s129
• (engine ctrl harn, near grommet) s121
• (engine ctrl sensor harn, near breakout to evr solenoid)
• (engine ctrl sensor harn, near breakout to injector #2) s152
• (front of eng) s168
• (in trans control harness)
• (in trans harn) s125
• (left front of engine compt) g100
• (near breakout to pcm)
• (near breakout to tp sensor) s129
• (right kick panel)
• A/c cutout
• A/c high
• A/c system
• Air bypass
• Cmp sens
• Differential pressure feedback egr sensor (center rear of engine compt)
• Dpfe
• Egr vacuum regulator solenoid (rear of throttle body)
• Engine coolant temperature sensor (top front of engine)
• Evap purge
• Fuel inj 1
• Fuel inj 2
• Fuel inj 3
• Fuel inj 4
• Fuel inj 5
• Fuel inj 6
• Fuel inj 7
• Fuel inj 8
• Fuel injectors
• Fuel press
• Fuel pump
• Iac valve
• Idle air control valve (top rear of engine)
• Ign coil
• Intake air temperature sensor (on air intake assembly)
• Left front heated oxygen sensor (in exhaust manifold, above flange inboard side)
• Left rear heated oxygen sensor (left rear side of engine, in exhaust manifold)
• Lf ho2s
• Lr ho2s
• Maf sens
• Nca
• Power
• Powertrain control module (pcm)
• Pwr gnd
• Red
• Red/pnk
• Ref volt
• Rf ho2s
• Right front heated oxygen sensor (in exhaust manifold, above flange inboard side)
• Right rear heated oxygen sensor (in exhaust, rear of catalytic converter)
• Rr ho2s
• S126
• S130 (near breakout to fuel inj #6)
• S139
• S151
• S244
• S250
• Sig rtn
• Tan
• Tan/red
• Throttle position sensor (on throttle body)
• Tp sens

4.6L SOHC, Engine Performance Wiring Diagrams (1 of 3) for Ford Mustang GT 1998

List of elements for 4.6L SOHC, Engine Performance Wiring Diagrams (1 of 3) for Ford Mustang GT 1998:

• (behind dash,
• (engine ctrl sensor harn, near grommet) s240
• (in trans control harness)
• (on top of transaxle) digital transmission range sensor
• (right kick panel)
• 4r70w transmission
• A/c system
• Accs input
• Anti-theft system
• C250
• C251
• Ckp (+)
• Ckp (-)
• Cooling fan
• Cooling fans system
• Crankshaft position sensor (center front of engine)
• Cruise control, instrument cluster
• Dash, right of column)
• Data link connector (behind
• Dlc
• Dlc (bus +)
• Dlc (bus -)
• Dtr tr1
• Dtr tr2
• Dtr tr4
• Ect sensor
• Eec fuse 20a
• Egr vacuum
• Electronic pressure control (epc)
• Engine compartment fuse box (left side of engine compartment)
• Evap flow
• Fuel pump
• Fuel relay
• Fuel sender
• Fuse 10a
• Fuse 15a
• Fuse 20a
• G100 (left front of engine compt)
• G203 (behind dash, at right kick panel)
• Ground
• Hot at all times
• Hot in run
• Hot in run or start
• I/p fuse panel (left of steering column)
• Iat sensor
• Ign coil
• Ignition coil 1 & 2 (top front of engine)
• Instrument cluster
• Interference capacitor (top front of engine)
• Maf sensor
• Malfunction indicator lamp
• Mil
• Nca
• Powertrain control module (pcm)
• Red
• Right of column)
• Right radio
• Rr ho2s
• S108
• S126
• S132
• S143
• S144
• S204
• S219
• S228
• S229
• S235
• S250
• S252
• Shft sol #2
• Shift solenoids (ss)
• Sht sol 1
• Solenoid
• Tach
• Tcc sol
• Tcs input
• Tft sensor
• Torque converter clutch (tcc) solenoid
• Transmission control switch (right of gear selector)
• Transmission fluid temperature sensor
• Vehicle speed sensor (left rear of transmission)
• Vmv current
• Vss (+)
• Vss (-)

4.6L SOHC, Engine Performance Wiring Diagrams (2 of 3) for Ford Mustang GT 1998

List of elements for 4.6L SOHC, Engine Performance Wiring Diagrams (2 of 3) for Ford Mustang GT 1998:

• (behind dash, at right kick panel)
• (engine control harn, near grommet)
• (engine ctrl sensor harn, near breakout to inj #5) s123
• (left front of eng compt)
• (near breakout to fuel pump resistor)
• (near pcm) fuel pump relay
• (rear of right front fender) fuel pump resistor
• Camshaft position sensor (front of engine)
• Constant control relay module (inside right front fender, behind air filter housing)
• Cooling fans system
• Eec fuse 20a
• Engine compartment fuse box (left side of engine compartment)
• Evaporative emission canister purge valve (right side of engine compt)
• Evaporative emission purge flow valve (right side of engine compt)
• Fuel fuse 20a
• Fuel injectors
• Fuel pump module
• Fuel pump relay
• Fuel tank assembly
• Fuel tank pressure sensor
• G100
• G100 (left front of engine compt)
• G203 (behind dash, at right kick panel)
• G302 (below rear of center console)
• Hot at all times
• Ignition coil 3 & 4 (top front of engine)
• Inertia fuel shut-off switch (left rear of trunk)
• Left radio interference capacitor (top front of engine)
• Mass air flow (maf) sensor (on air cleaner assembly)
• Nca
• Pcm power relay
• Red
• Red/pnk
• S108
• S115
• S116 (engine ctrl harn, near breakout to right front brake sensor)
• S127
• S142
• S143
• S144
• S153
• S205
• S250
• S251
• Vapor management valve (right side of engine compt)

4.6L SOHC, Engine Performance Wiring Diagrams (3 of 3) for Ford Mustang GT 1998

List of elements for 4.6L SOHC, Engine Performance Wiring Diagrams (3 of 3) for Ford Mustang GT 1998:

• (behind dash, at right kick panel) s129
• (engine ctrl sensor harn, near breakout to dpfe sensor) s162
• (engine ctrl sensor harn, near breakout to inj #6) s163
• (front of eng) s168
• (left front of engine compt) g100
• (main harn, near breakout to multifunction switch)
• (near breakout to fuel inj #6)
• (near breakout to pcm)
• (near breakout to tp sensor) s129
• (right kick panel)
• A/c cutout
• A/c high
• A/c system
• Bpp
• Brake pedal position switch (on pedal support)
• C250
• Cmp sens
• Differential pressure feedback egr sensor (center rear of engine compt)
• Dpfe
• Dtr tr3a
• Egr vacuum regulator solenoid (rear of throttle body)
• Engine coolant temperature sensor (top front of engine)
• Epc sol
• Evap purge
• Fuel inj 1
• Fuel inj 2
• Fuel inj 3
• Fuel inj 4
• Fuel inj 5
• Fuel inj 6
• Fuel inj 7
• Fuel inj 8
• Fuel injectors
• Fuel press
• Fuel pump
• Fuse 10a
• Fuse 15a
• Hot at all times
• Hot in run or start
• I/p fuse panel (left of steering column)
• Iac valve
• Idle air control valve (top rear of engine)
• Ign coil
• Instrument cluster
• Intake air temperature sensor (on air intake assembly)
• Left front heated oxygen sensor (in exhaust manifold, above flange inboard side)
• Left rear heated oxygen sensor (left rear side of engine, in exhaust manifold)
• Lf ho2s
• Lr ho2s
• Maf sens
• Nca
• Oss sens
• Output shaft speed sensor (left side of trans)
• Power
• Powertrain control module (pcm)
• Pwr gnd
• Red
• Red/pnk
• Ref volt
• Rf ho2s
• Right front heated oxygen sensor (in exhaust manifold, above flange inboard side)
• Right rear heated oxygen sensor (in exhaust, rear of catalytic converter)
• Rr ho2s
• S121 (engine ctrl harn, near grommet)
• S125 (in trans harn)
• S130
• S139
• S207
• S228
• S241
• S244
• S250
• Sig rtn
• Tan
• Tan/ red
• Tan/red
• Tcil
• Throttle position sensor (on throttle body)
• Tp sens
• Transmission control indicator lamp