1990 Ford F150 wont stay running, replce ECT and ICM ... still wont run. Water coming out of exhaust after trying to run. 5.0 w/5-speed.

unscrew the cable from the transmission. if you can`t unscrew it,unbolt the lock bolt that holds the little bar which keeps the speedometer cable in place and remove the speedometer driven gear assembly from the transmission. the gear is plastic and is what the cable is driven by.

Bad ignition switch.Here's a link.Here's the part.

By the oil filter is the oil pressure switch,screwed into block.If you have a oil pressure gauge,it won't work.

check fuel filter and fuel pump pressure

Hey i recently bought a 1990 ford 5.0L 5 speed. Clutch safety switch was not working proper, bypassed the safety switch, truck was running rough but when you take the wire off of the small top post of the solenoid and apply it to the positive terminal of the solinoid it runs well. After tracing the wire i found that by applying that wire to the positive termina i get power to what i believe is the "run" wire in the TFI plug which is plugged into the distributor. it is the third wire from the right side of the plug when your looking at it with it unplugged facing yourself. Still trying to track down where this wire runs to but if i find out ill let you know sounds like we may have the same problem

clean the idle air control valve and pcv valve with spray carb cleaner. The IAC controls idle speed but gets gummed up. The pcv valve may cause a vacuum leak as well so clean or replace. And lastly clean the throttle bore and butterfly valve using an old toothbrush and some towels. Check the electrical connection at the IAC for security and corrosion and clean as needed.

You either have a bad MAP sensor or a bad fuel pressure regulator.

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.

yes checked fuel pressure and replaced the fuel filter, checked the mapp sensor,tested throttle position sensor, has strong spark, 50psi fuel pressure, fresh tune up, runs real rich and rough idle but wont rev up like fuel injectors arent speeding up, also checked exhaust. thanks julius

First try to step on gas about one quarter throttle then try to start.If it starts like that I would change the Idle Air Control valve.