chevyman98
Registered User
i have recently aquired a 1991 f350 2wd 7.3 idi with an auto trans. i need to get it up and going for my father to drive back and forth to work. we put new fuel and fluid in the trans with a filter and oil and oil filter. the problem we have is that it shift s fine through all gears but will not lock into overdrive. if there are any suggestions woul be great. also the oil presure guage works off and on and was wondering if maybe the sending unit is bad and could yall tell me where its at. the last question i have is the tact starts to work at around 1300 rpm but if it drops below that it sits at 0. if yall could help us out that would be great. thanks in advance.