2003 Ford F150 Regular Cab - Answered Questions & Fixed issues
2003 ford f 150 4.6 v8 and the idle went from
have the vehicle scanned for error codes at autozone, its free. Post codes for more help....These engines have issues with the COPs (ignition coils-over-plugs) failing prior to 80k miles. When they fail typical problems are: Sputtering under load/acceleration, rough idle, random misfires, random stalling, light or heavy jerking under load (usually at 15-35mph and 45-65mph)..hopefully this helps!!
2002 f150 4wd drive not not working,
Transfer Case - Electronic Shift on the Fly (ESOF) Features
A rotary switch allows the vehicle operator to choose between 2WD, 4H, and 4L modes of 4x4 operation.
The generic electronic module (GEM) controls the operation of the 4x4 system.
The output shaft speed (OSS), mounted in the rear of the transfer case, informs the GEM of the vehicle speed.
The shift motor sense plate, an integral part of the electronic shift motor, informs the GEM to the positions of the transfer case (go to Table 4).
The transmission range sensor is located on the LH side of the transmission; this sensor informs the GEM when the transmission is in the NEUTRAL position.
The electronic shift motor, mounted externally at the rear of the transfer case, drives a rotary cam which moves the mode fork and range fork within the transfer case to select between the 2WD, 4H, and 4L positions.
The 4x4/4x2 vacuum solenoids are attached to the upper RH side of the engine compartment, and alternately route vacuum to the vacuum motor which engages/disengages the center axle disconnect collar in the front axle assembly.
The 4x4 shift motor relay is a module containing two relays. Under the control of the GEM, the 4x4 shift motor relay shifts the transfer case shift motor between the 2WD, 4H, and 4L modes.
The transfer case clutch relay is an electromechanical relay used to activate the transfer case clutch within the transfer case.
Your best bet , take it to a qualified repair shop !
P1804
Transmission 4-Wheel Drive High Indicator Circuit Failure
GEM
REFER to Section 413-01A .
P1806
Transmission 4-Wheel Drive High Indicator Short Circuit to Battery
GEM
REFER to Section 413-01A .
P1812
Transmission 4-Wheel Drive Mode Select Circuit Failure
GEM
REFER to the Symptom Chart.
P1815
Transmission 4-Wheel Drive Mode Select Short Circuit to Ground
GEM
REFER to the Symptom Chart.
P1820
Transmission Transfer Case Clockwise Shift Relay Coil Circuit Failure
GEM
GO to Pinpoint Test A .
P1822
Transmission Transfer Case Clockwise Shift Relay Coil Short Circuit to Battery
GEM
GO to Pinpoint Test A .
P1824
Transmission 4-Wheel Drive Clutch Relay Circuit Failure
GEM
GO to Pinpoint Test E .
P1826
Transmission 4-Wheel Drive Low Clutch Relay Short Circuit to Battery
GEM
GO to Pinpoint Test E .
P1828
Transmission Transfer Case Counter Clockwise Shift Relay Coil Circuit Failure
GEM
GO to Pinpoint Test A .
P1830
Transmission Transfer Case Counter Clockwise Shift Relay Coil Short Circuit to Battery
GEM
GO to Pinpoint Test A .
P1832
Transmission Transfer Case Differential Lock-Up Solenoid Circuit Failure
GEM
GO to Pinpoint Test C .
P1834
Transmission Transfer Case Differential Lock-Up Solenoid Short Circuit to Battery
GEM
GO to Pinpoint Test C .
P1838
Transmission Transfer Case Shift Motor Circuit Failure
GEM
REFER to the Symptom Chart.
P1846
Transmission Transfer Case Contact Plate 'A' Circuit Failure
GEM
REFER to the Symptom Chart.
P1850
Transmission Transfer Case Contact Plate 'B' Circuit Failure
GEM
REFER to the Symptom Chart.
P1854
Transmission Transfer Case Contact Plate 'C' Circuit Failure
GEM
REFER to the Symptom Chart.
P1858
Transmission Transfer Case Contact Plate 'D' Circuit Failure
GEM
REFER to the Symptom Chart.
P1866
Transmission Transfer Case System Concern - Servicing Required
GEM
REFER to the Symptom Chart.
P1867
Transmission Transfer Case Contact Plate General Circuit Failure
GEM
REFER to the Symptom Chart.
P1876
Transmission Transfer Case 2-Wheel Drive Solenoid Circuit Failure
GEM
GO to Pinpoint Test C .
P1877
Transmission Transfer Case 2-Wheel Drive Solenoid Circuit Short to Battery
GEM
GO to Pinpoint Test C .
P1891
Transmission Transfer Case Contact Plate Ground Return Open Circuit
GEM
REFER to the Symptom Chart.
My truck has kind of shutter to it upon
it could be the coil pack, its one of the symptoms that can happen when they fail, if it has a crack or seal broken damp can get inside and cause it to not work properly.
2003 Ford F-150 service engine light
You can go to any autoparts chain store and have them try but if it is not corrected or corrected itself in 3 start cycles, it will come back on.
My transfer case goes into gear but doesn't turn the wheels.
The lights can come on wihtout the transfer case really working..the lights are actvated by a simple switch and only indicate the switch has been depressed.
It's sounds as if you have a problem with the lickage, or maybe damage inside the transfer case itslef
Truck starts to shake at 40 mph gets to 45 mph then the shaking stops after 45 mph
Many possibilities. I would start with wheels, and take it to a well equipped tire dealer. Have them check that the wheels and rims are clean, properly torqued. Spin the wheels up to speed and check for dynamic wheel balance. Check for broken radial belts. Check for recalls on your tires. Check for driveshaft and universal joint damage/ balance.
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