1996 FORD AEROSTAR clutch

185
Driving Your Aerostar
[DR00300(ALL)08/95]
Automatic Transmission
Operation (4R44E/4R55E)
*
[DR00350(ALL)08/95]
The 4R44E and 4R55E transmissions are
electronically controlled four speed overdrive
automatic transmissions with lockup torque
converter. Transmission operation is controlled
by the Powertrain Control Module (PCM).
*
[DR00425(ALL)08/95]
The PCM will automatically adjust transmission
operation to make up for varying conditions.
Several sensors located on the engine and
transmission such as throttle position, engine
speed, vehicle speed and transmission
temperature are used by the PCM to shift the
transmission into a higher or lower gear when
required for the best performance and fuel
economy. For example, you may notice that the
transmission will upshift to a higher gear more
quickly when the vehicle has not reached normal
operating temperature.
*
[DR00475(ALL)08/95]
The PCM also controls the transmission's Torque
Converter Clutch (TCC) to further raise vehicle
performance and fuel economy. The TCC will
engage when the transmission operating
temperature and other conditions determined by
the PCM have been met. Engagement of the
clutch may be noted as a decrease in engine
speed.
[DR00500(ALL)08/95]
To help in troubleshooting, the PCM continually
performs self-tests on the electronic control
system and, if any faults are detected, stores
them in memory. The Overdrive Off Indicator
Light (O/D OFF), which is located on the
File:10cpdra.ex
Update:Tue Aug 29 17:45:28 1995

Index 363
Cleaning your vehicle (continued)
rustproofing.............. 9
safety belts............... 23
tail lamps.............. 102
upholstery and interior trim...... 142
washing................ 8
waxing................ 8
wheels................ 303
windows............... 100
Climate control system.......... 91
air conditioning............ 92
heating only system........... 95
Clock...............155, 171
Clutch, specifications.......... 338
Cold engine starting............ 65
Combination lap and shoulder belts . . 11, 13
Compact disc player
(see Electronic sound system)..... 156
Compact disc radio
(see Electronic sound system)..... 150
Console, description........... 145
Controls
instrument panel............ 89
mirrors............... 144
steering column........... 109
Coolant (see Engine coolant)....... 284
checking and adding......... 284
drain and flush............ 289
preparing for storage......... 344
proper solution............ 286
refill capacities..........289, 335
specifications............. 338
temperature gauge........... 85
warnings............... 284
Cruise control (see Speed control).... 115
File:cpixa.ex
Update:Tue Aug 29 17:47:05 1995