20 Most Recent 2003 Ford F250 Super Duty Crew Cab Questions & Answers


Built in the wiper motor.. See the other post.

2003 Ford F250... | Answered on Mar 03, 2019


check owners manual ,nut it might be in the power distribution box under the hood ,or behind the right kick panel under dash

2003 Ford F250... | Answered on Mar 03, 2019


check your glow plug relay! located on the right side head

2003 Ford F250... | Answered on Jan 07, 2019


Could be an open fuse or defective speed sensor

2003 Ford F250... | Answered on Dec 30, 2017


yea fix those wires first

2003 Ford F250... | Answered on Dec 26, 2017


What large square fuse ? The 4X4 switch get's it's B+ voltage from the four - wheel drive control module . computer controlled ! Has two relay's - transfercase hi to low & low to high ,located in the Auxiliary relay box #3 . location left side of radiator core support . Your best bet ,take it to a qualified repair shop that has a diagnostic tool that can communicate with the 4X4 control module . Read code's ! Probably has a code like one of these
P1812 Transmission 4-Wheel Drive Mode Select Circuit Failure 4WD control module Go To Pinpoint Test D . P1815 Transmission 4-Wheel Drive Mode Select Short Circuit to Ground 4WD control module Go To Pinpoint Test A .
But code have a few others as well .
B2105 Throttle Position Input Out of Range Low 4WD control module Go To Pinpoint Test B . B2106 Throttle Position Input Out of Range High 4WD control module Go To Pinpoint Test B . C1728 Transfer Case Unable to Transition Between 2H and 4H. 4WD control module Go To Pinpoint Test C . C1729 Transfer Case Unable to Transition Between 4WD HIGH and 4WD LOW 4WD control module Go To Pinpoint Test D . C1979 IWE Solenoid Circuit Failure 4WD control module Go To Pinpoint Test F . C1980 IWE Solenoid Short to Battery 4WD control module Go To Pinpoint Test F . P1812 Transmission 4-Wheel Drive Mode Select Circuit Failure 4WD control module Go To Pinpoint Test D . P1815 Transmission 4-Wheel Drive Mode Select Short Circuit to Ground 4WD control module Go To Pinpoint Test A . P1824 Transmission 4-Wheel Drive Clutch Relay Circuit Failure 4WD control module Go To Pinpoint Test A . P1826 Transmission 4-Wheel Drive Low Clutch Relay Short Circuit to Battery 4WD control module Go To Pinpoint Test A . P1827 Transmission 4-Wheel Drive Low Clutch Relay Short Circuit to Ground 4WD control module Go To Pinpoint Test A . P1849 Transmission Transfer Case Contact Plate A Short Circuit to Ground 4WD control module Go To Pinpoint Test D . P1853 Transmission Transfer Case Contact Plate B Short Circuit to Ground 4WD control module Go To Pinpoint Test D . P1857 Transmission Transfer Case Contact Plate C Short Circuit to Ground 4WD control module Go To Pinpoint Test D . P1861 Transmission Transfer Case Contact Plate D Short Circuit to Ground 4WD control module Go To Pinpoint Test D . P1867 Transmission Transfer Case Contact Plate General Circuit Failure 4WD control module Go To Pinpoint Test D . P1891 Transmission Transfer Case Contact Plate Ground Return Open Circuit 4WD control module Go To Pinpoint Test D .

2003 Ford F250... | Answered on Nov 27, 2017


It is a Ford. Replace the fuel pump and check the fuel lines for leaks including any filters.

2003 Ford F250... | Answered on Nov 01, 2017


check the vacuum switch and lines...

2003 Ford F250... | Answered on Sep 05, 2017


This sounds like the idle control valve or stepper motor as it's sometimes called needing a good clean out or replacement. When faulty this would cause all the symptoms you are describing.

2003 Ford F250... | Answered on Aug 10, 2017


fix the plug,car or trailer, and check the wiring and bulb sockets in the trailer
bigger fuses are equal to burnt wiring harness or fires in either vehicle

2003 Ford F250... | Answered on May 27, 2017


replace your stop light switch its on the brake pedal

2003 Ford F250... | Answered on May 17, 2017


There is a glow plug timer that can fail.

2003 Ford F250... | Answered on Jul 14, 2016


Absolutely! There's a fuse that controls every light on your truck. Some share the same circuit, some don't. Consult your manual. If you don't have one, get one - you will need it repeatedly.

2003 Ford F250... | Answered on Jun 04, 2016


Hi Amy, The link below is a short youtube video on how to fix your transmission... I hope this helps.......CHEERS..

Fixing Transmission That Slips And Clunks

2003 Ford F250... | Answered on Apr 04, 2016


Apply power to the small "S" terminal.

2003 Ford F250... | Answered on Mar 20, 2016


The switches that control the lights for open doors are made right into the door latches and they have a history of sticking and causing problems like that.

Here is a technique that often works well and eliminates the problem at no cost.


Get a can of spray lube like WD40 or something like it and has a straw on the nozzle. Spray it generously up into the latch mechanism. Now open and close the door numerous times to work it in. Repeat this process several times. Since you don't really know which door is causing the problem, you should do all of them. It's usually caused by the most frequently used door but it's not guaranteed to be that one.

2003 Ford F250... | Answered on Mar 20, 2016


That sounds like a security system is activated. Somebody has probably disabled the siren.

2003 Ford F250... | Answered on Mar 20, 2016


The only ones that are actually codes are the "U" codes. The other designation is a communication protocol.
Those codes are network communication codes and indicate there is a problem with modules communicating with each other. This is a highly technical diagnosis that you will not be equipped for.

2003 Ford F250... | Answered on Mar 20, 2016

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