Fer se refiere con MAF al mass air flow y yo supongo que tu motor es 6 cil. 3.0L
si no es ese dime para buscar el 2.4.
aqui te pongo las especificaciones del 3.0
http://www.automecanico.net/05/9397N01.html
en esto se puede vasar tu mecanico para hacer pruebas.
CAMSHAFT POSITION SENSOR VOLTAGE TEST (1)
Application Wire Color (1-Degree Signal) Wire Color( 120/180-Degree Signal)
Quest (2) Red/Blue Red/White
(1) Measure voltage between indicated wire color terminals.
(2) Voltage should fluctuate between zero and 5 volts.
CLOSED THROTTLE POSITION SWITCH CONTINUITY (1)
Application Wire Colors
Quest Red/Yellow & Brown/Yellow
(1) Continuity should exist with throttle valve fully closed, and no continuity with throttle valve off idle position.
ENGINE (COOLANT) TEMPERATURE SENSOR RESISTANCE
Temperature - °F (°C) Ohms
68 (20) 2100-2900
122 (50) 680-1000
176 (80) 300-330
194 (90) 236-260
EXHAUST GAS TEMPERATURE SENSOR RESISTANCE
Temperature °F (°C) Ohms
212 (100) 76,770-93,830
INHIBITOR SWITCH CONTINUITY
Lever Position 8-Pin Connector Terminals No. 2-Pin Connector Terminals No.
"P" 3 & 4 1 & 2
"R" 3 & 5 N/A
"N" 3 & 6 1 & 2
"D" 3 & 7 N/A
"2" 3 & 8 N/A
"1" 3 & 9 N/A
KNOCK (DETONATION) SENSOR RESISTANCE @ 77°F (25°C)
Application Ohms
Quest Continuity To Ground
MASS AIRFLOW SENSOR VOLTAGE TEST (1)
Application Volts (2) With KOEO Volts At Idle
Quest Less Than 0.5 1.0-1.7
(1) Values are approximate and vary with engine RPM.
(2) Key On, Engine Off.
POWER STEERING OIL PRESSURE SWITCH
Condition Continuity
Steering Unloaded (Not Turning Steering Wheel) No
Steering Loaded (Turning Steering Wheel) Yes
THROTTLE POSITION SENSOR RESISTANCE TEST
Application Wire Colors k/Ohms
Quest White/Black & Red 1.0-9.0
VEHICLE SPEED SENSOR
Application (1) AC Voltage
Quest 0.5
(1) Measured while rotating sensor shaft by hand, check AC voltage across sensor connector terminals.