:(( i need to know whats wrong with my 1986 f150

redneckboy1988 · Dec 29, 2009

i had a 1986 ford f150 with a inline 6, and i was driving down the road in it one day, and all of a sudden i heard a hard slapping noise coming from about my gas tank.. surely enough it was the rear driveshaft beating up against the plastic part of the gas tank.. i changed the universal joints, front and back, but whenever i pulled back out to see if it would quit slapping it didnt, so i was wondering if it would be a rear end problem or a transmission problem.. please help me if you have any information about it.. its greatly appreciated because i want that truck back soo bad.. thank yall for reading

bronc76 · Dec 29, 2009

When you said that it did not quit slapping, did the shaft break again? The shaft maybe out-of-balance. If its 4wd, you can run without the rear shaft to see if the problem is still the rear end without the shaft.

redneckboy1988 · Dec 29, 2009

bronc76 said:
When you said that it did not quit slapping, did the shaft break again? The shaft maybe out-of-balance. If its 4wd, you can run without the rear shaft to see if the problem is still the rear end without the shaft.

nosir, the driveshaft never did break. it could possibly be warped. but i cant find a driveshaft in a junkyard nowheres! and wouldnt that ruin your transfer case if you ran it in 4wd all the time?

johnnyr · Dec 29, 2009

redneckboy1988 said:
nosir, the driveshaft never did break. it could possibly be warped. but i cant find a driveshaft in a junkyard nowheres! and wouldnt that ruin your transfer case if you ran it in 4wd all the time?

Could be your gas tank, have you checked your straps?
I had mine fall off while i was riding down the road. Just put 3/4 of a tank in her. was soo lucky i didn't blow up.

Also, you can run it in four wheel drive w/o your rear driveshaft as long as your front u joints are good.
essentially, the transfer case is always running when it's in 2wheel high.

redneckboy1988 · Dec 29, 2009

johnnyr said:
Could be your gas tank, have you checked your straps?
I had mine fall off while i was riding down the road. Just put 3/4 of a tank in her. was soo lucky i didn't blow up.

Also, you can run it in four wheel drive w/o your rear driveshaft as long as your front u joints are good.
essentially, the transfer case is always running when it's in 2wheel high.

hmm i didnt know that. well they guy i traded it to wants 600 dollars back for it.. and it also needs the 4wd assembly in the left drivers side wheel.. =( idk where to get one of those

lostin90s · Dec 29, 2009

Want adds wrecking yards. The front axles for F150 been same since 80 so any should work . I get my parts from your area so I know there are back woods wrecking yards in the area . They have the older stuff. If no find let me know . I got several in my favorite yard .

redneckboy1988 · Dec 30, 2009

lostin90s said:
Want adds wrecking yards. The front axles for F150 been same since 80 so any should work . I get my parts from your area so I know there are back woods wrecking yards in the area . They have the older stuff. If no find let me know . I got several in my favorite yard .

i appreciate ya.. u dont know where i can find me a good truck for around the 5 to 6 hundred dollar range do ya?