I have a 96 F150 5.0L. I have a P0385 code (crankshaft position sensor b circuit malfunction) My engine however has never had a problem starting and it runs really well. the only symptoms i have are really poor fuel millage and when i take my foot off the gas my transmission downshifts instantly. odd enough it shifts fine up and down when the MAF sensor is disconnected. Has anyone run into something like this?