My truck 99 f150 5.4 4r70w transmisdion was running great.....got in started to take off have loss of power and alot if trouble shifting thrn like it's stuck in gear o/d light flashes have changed transmission filter put a fuel pump in and fuel filter codes p01747 p0750 p0755 p0743 any ideas where to start... ..updated info it was a slow weekend watching my husband get a frustrated with the truck but I want to thank y'all for the help although I haven't got to try ur suggestions yet since I didn't see them until a min. Ago. We did get the mass airflow sensor replaced and the truck seems to run better but issue still isn't fixed i havent called our friend over to check the codes but will update when I get more info
SOURCE: 1st and o/d gear do not work and O/D light flashes
dealers are very rude and they will all ways charge you more money then needed. I got codes for my car from and personal owner (small business) they did a check engain scan and the codes came up and they were very nice after I had asked if they would please write down the meanings of the codes, When they did that there were some that they did not know but the parts store like schuck's will scan for free and again they will also write down what part you will need for the code and they should also know about those other codes as well. I do live in Vancouver, Wa and I'm not sure where you are located but the people that are helping you should like they really don"t want to help. Rude people every where.
Nikki2913
SOURCE: over drive light flashes
P0743 is Torque Converter Clutch solenoid circuit failure during self-test.
P0750 is SS1(shift solenoid) solenoid circuit failure.
P0755 is SS2 solenoid circuit failure.
Sounds like you are having an intermitant electrical failure to the tranny. Check the connector at the Tranny and make sure you don't have a loose connector and check it for corrosion.Trace these 3 wires back GN/WH, GN/Y, and GN/O. these go back to a splice then go into one wire GN/Y and then to the PCM relay in the engine compartment fuse panel. Make sure that this harness is not chaffing on metal somewhere or maybe the splice is going bad.You can try and overlay it from the relay to one of the 3 wires at the tranny connector and see if this solves the concern.
SOURCE: ford e250 2005 year wont shift out of second gear.
1st.. check fuse for clutch solenoid/relay. 2nd... replace clutch solenoid/relay. 3rd... check for damaged wiring to trransmission or connector to transmission. If all these are correct, see your Ford Dealer.
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