Runs but doesn't move
I have a 87 ford 150 4 speed straight 6 I was
driving down the road then all of a sudden my
speed was dropping and when I gave it gas it
would just rev up and won't drive bUT it starts no
I take it you have an automatic transmission? Check the fluid level but it is probably shot. If it has a manual transmission then the clutch may be slipping.
You didn't say what trans. you have however it's probably the Transmission or the Clutch. Its is vaguely possible to be a differential or the drive line. There is usually a lot of noise if that's the case. Good luck and let us know what it is.
It's a manual
Looking for a Used F-150 in your area?
CarGurus has 208,465 nationwide F-150 listings starting at $1,499.
Search Ford F-150 Questions
Ford F-150 Experts