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F-250 Super Duty

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Question
Transfer case will not lock front drive line in for 4 wheel drive.
Hi there. Sounds like the chain in the transfer case has broken. If your transfer case has gears, then the gears may have broke off or ground down the teeth. Also, the syncronizer slider in the transfer case could have...
Question
What could be the problem?
Hi there. After the high pressure oil line came apart, the lack of lubrication caused the oil pump to crack. For the bumping, shaking, or misfiring symptom that you are experiencing, there could be an issue with the engine as...
Question
What is the "98H" modification consist of?
Hi and thanks for contacting Your Mechanic. The engine will burn the ultra-low, Low, and High sulfur content diesel at any time. The thing about the High sulfur diesel is that the lubricity of the fuel drops making the engine...
Question
Fair price for oil & filter changes
Hi there. The best way to get pricing for an oil change service, and fuel filter replacement is to click those links and request a quote; as we need to gather information from you to determine if you live in...
Question
Getting a p138b code - should I just replace the GPCM? I think a nearby lightning strike may be the culprit.
Hi there. If the codes for the engine are coming up with the glow plug control module failure, then check the module to see if there is any wiring burned or broken. If there is nothing wrong with the harness...
Question
What mileage should rotors be replaced on an F250 that doesn't tow?
There is no set mileage that the rotors should last. You may need to replace them if they get warped or you let the brake pads wear down till the metal pad backing grinds in to the rotor. Your rotors...
Question
How do I tell the difference between an alternator issue and a starter issue?
If the starter motor is turning the engine over at adequate RPM, then you definitely do not have a starter motor issue. Even if you had a bad alternator (and the alternator should absolutely be tested, certainly when you install...
Question
Motor swap
Hi there. The best resource for you is a service and repair manual for the 2001 Ford F-250. Even though there are multiple electrical sensors and connectors, these service manuals are still a great resource to give casual mechanics the...
Question
cold start issues and would not start in 28 degree weather.
Hi there. Check the glow plug circuits and the timer circuit to the glow plugs. The block heater should be plugged in during cold weather if the vehicle is left outside. The glow plugs are to heat up the cylinders...
Question
Why would all my gears go forward including neutral and reverse.
Hi there. The intermediate shaft in the transmission broke or stripped out the teeth and the input shaft seals are leaking. I recommend seeking out a professional, such as one from Your Mechanic, to help you diagnose your transmission issues....
Question
A/C blowing out of defrost and vents
The mode door has an actuator that may not be moving the mode door when you are changing position where you want the air to blow. You will need to have the mode door actuator wiring checked and verified it...
Question
Tow haul feature
The tow haul function is supposed to be used at all times when the vehicle is towing something behind the vehicle or the bed is loaded with a lot of weight. This is so you do not damage the transmission...
Question
Coolant leak somewhere bad
If the leak is large, simply leaving the engine off and flowing water through the system will pinpoint it. Based on the location you are describing, it could be a heater hose that has rotted and burst. It should be...
Question
My 2000 F-250 completely stalls randomly
The most common cause of random stalling on this vehicle is a failure in the camshaft position sensor or in the connection at the sensor. This causes the computer to lose the signal and stall. If there are other electrical...
Question
Starts fine then after a minute or so starts to misfire.
Hi there. Check the oil pressure to the fuel injectors and see if the pressure is dropping. The injectors require the oil pressure to make them work and if the pressure is dropping, then the injectors will not fire. If...
Question
f250 5.4 v8 automatic 4x4. It spit a spark plug in a cylinder and still runs just misses. Shop is asking 4500. What damage can it cause and how much to fix it?
If the spark plug is spitting out, then the threads in the cylinder head or on the spark plug have been stripped out. Check the spark plug if you still have it and see if its stripped. If the plug...
Question
Platinum model, does it have daytime running lights and how to turn them on.
You would know if your vehicle has daytime running lights if your headlights were on even if you headlight switch was off and you would see the DRL indicator on in the dash. You do not and cannot turn the...
Question
I have excessive smoke coming from exhaust when I tow my trailer.
The cloud of smoke is the engine running colder than normal or having too much fuel in the engine. Check the fuel injection system and see if the fuel injectors are firing correctly. If the fuel system is working properly,...
Question
Why truck will not go when cold
If you have had the fuel injection control module (FICM) replaced recently then you may have a bad FICM caused by repeated low voltage conditions causing the FICM to not produce the high 42 volts to open the injectors when...
Question
My 2011 truck does not start all lights on dashboard turn on like normal but it will not start and it started showing a advancetra
Hi there. If you are able to turn the key and the engine cranks over; but won't ignite, the issue will be caused by an ignition or fuel system component failure. If you are unable to crank the engine over,...

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