Where do you put starting fluid in 1989 ford f150

SOURCE: truck runs rough

Sounds like one of your chambers isn't firing. Run your car for a few minutes, shut it off then pull your plugs one at a time and see if one of them is wet. Might just need a new plug.

SOURCE: fuel pump advice

If it is an old electronic fuel pump then it should work fine.

SOURCE: 1989 Ford F150 power window

you have to disconnect the negative side of the battery so you won't kill it then remove the door panel look for hidden screws behind the arm rest and behind what looks like little doors that you have to use a screw driver to open once that is removed you will find a plastic sheet just cut and peel this back (you can use duct tape to replace it when you are done) also put on gloves because inside the doors there is sharp edges, you then can see the motor and you will need to break off the rivets but you can put the new one on with just a small bolt and nut and use lock tight

SOURCE: 1989 ford f150 w/ 5.0 liter..... engine light on

I would check the oil pressure of the engine. The reason is the timing chain tensioners are run with oil pressrue. I think your timing chain tensioners are leaking down when engine is getting to operating tempature . The oil is thinning down as warms up , as it should to lubercate . I would check compression and do a cylinder leak down test on all the cylinders. Then if the compression is good and the cylinder leak down is good. I would change all the timing components, ( chain, timing gears, timing chain tensioners )

Good Luck , I hope this helps.

SOURCE: 1990 Ford F150 won't start/Sometimes will start

We are having similar problems. My husband replaced the fuel pump, fuel regulator and now it cranks but dies when you give it a lot of gas. He thinks the fuel injectors are stopped up. I read where one guy replaced the computer and fixed it and another one replaced the EEC. Check the relay contact and clean and check all grounding wires.