2000 ford f-250 diesel

Your best bet , take it to a qualified repair shop. The overdrive off light flashes is telling you that the transmission has a problem an code's are set in the transmission control module or PCM - engine computer . Speedometer an odometer not working could mean speed sensor is bad . Checking code's with a factory or professional scan tool is need . The heater fan not turning off is a seperate problem , relay stuck closed maybe . Is it running at high speed ?

It sound like the blower wheel of the blower motor is rubbing the inside of the housing (the smoke). Sounds like the blower wheel rubbing may have burned the inner plastic housing or has come off of the motor shaft inside. Take the blower motor and wheel back out and inspect everything closely I think you will find the problem.

SOUNDS LIKE YOU NEED A NEW GLOW PLUG CONTROLER

It is the fuel heater, All you have to do is unplug it.

this problem is caused by a part called the "temperature control blend door actuater motor" this litttle motor drive moves the door that diverts air over the heater core or AC evaporator core, when it fails it almost alwys fails in the AC only position, u will need to have the motor drive replaced

Could be a ciggerette lighter fuse, usually cause this when it blows.

Greetings..hopefully we can help or at least isolate the issue. You need to know that there was a few recalls with the cruise control system which is involved.. speedo and odometer is possibly in that circuit..but I am sure the ac had a separate fuse and relay...I do not have a book or schematics here. ,,I would disconect the wires to the ac compressor taking that out of the cause... I would also disconnect the cruise control wire to the unit and drive aroud for a day or so to see what happens. This is whats known as isolate and test . It may take some time but it will give you answers to what is the cause and then check that system out with us. At least you will have it narrowed down...ps ..do not forget at when it happens and what type of roadway ( bumpy, soft, wet, snow) as it all plays a part in diagnostics. I hope this helped.

Well, you have to let diesels warm up before you drive them so the engine gets warm and it may not sound right at first because if its not warm the compression gets off and doesnt fire right. If you try to give it too much gas before its warm, extra diesel will get in the cylinders and misfire. Then when it does fire, there is a lot of extra fuel in it so that causes the smoke and smell. You should always let it warm up for a bit before driving when you havent driven it for a while.

I had the same problem with my 2000 Windstar. It ended up being a brake fluid leak around a sensor on the master cylinder. The sensor is a known issue and has been redesigned. The brake fluid dripped onto some elctrical connections causing fuses to blow. The sensor turns off the cruise control when the brakes are pressed. On some vehicles it was known to cause fires and Ford had to provide a recall. At the time my Windstar was not covered in the recall but it may be now.

this sounds like electrical problem and can be as simple as a fuse. please check the appropriate fuses