20 Most Recent 1990 Ford F150 - Page 4 Questions & Answers

Check relay

Been too long. Do you lock them at the wheels? Then no, you don't have the vacuum actuator. If you have the vacuum, the part that dies most is under the battery front passenger side. Vacuum valve/s.

It is in the inlet tube to the AC evaporator core at passenger side rear of engine compartment.

sound like to me that u are getting air from somewhere one of your lines may be cracked or not tighttend all of the way or you may have overtightghted one of them

check fuel filter and fuel pump pressure

Here's a link Daniel on your system,join Autozone site,it's free,then you can use all of their repair guides like me. SAVE 20 ON ONLINE SHIP TO HOME ORDERS OF 100 OR MORE

Starting it is one thing... unlocking the steering column to drive it is another. The best fix s to buy a new lock tumbler and install it so that you can start it and steer it too!

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.

Windshield Washer Pump

1990 Ford Truck F150 1/2 ton P/U 2WD 5.0L FI 8cyl

The Windshield Washer Pump is located: Under hood, driver side front side of wheelwell, mounted inside washer bottle.here's the part. TAAP Windshield Washer Pump 7 664 1990 Ford F150 1 2 ton 2WD 8...

Hi,try putting the live on first then the earth.

How about corroded battery cables (internal)Fusible Link wiring corroded & open circuit,doeseverything electrical work except the starting circuit?Turn key & have power to starter solenoid ?Neutral Switch !Ignition Switch !Tough to guess without wiring diagrams,to see where to start testingCan't fix what you don't know you have

First, we need to know if the truck has an automatic or manual transmission.

Check fuel pump fuse, remember fuse send power to relay and relay sends power to pump, Check power wires to pump and make sure FUEL PUMP FUSE IS GOOD if not replace and take care of this problem. Good luck and thanks for using FIX YA.

The trans should be in neutral , if you look down inside the shifter tower the shift fork lands should look like this [ ] not like [ ].

Does the fuel pump relay come on?

the electric fuel pump is defective in the rear tank, each tank has its own pump

Engine mounts could be problematic, trans should line up just fine. Get a tape and measure from the end of the trans mount where it mount to the engine as in the side that faces engine.. Measure to engine mounts, then check and compare the distances and see if they match.. Auto trans or Manuel??

Check out your wiring for the lights, it sounds as if you have a short between the low and main beam circuit. If you have a relay in your system that could well be suspect. Check the ground as a poor ground can create this problem as well. One of the problems with this type of fault is the cause can be anywhere in the electrical circuit and without having the motor in front of you is can be rather difficult to track down.

Those older fords you have to put the 4x4 selector into 2H or 2 High on the floor shifter. Then go to the front tires and in the very center of the tire there will be a knob that say Locked and Unlocked. Turn the knob to unlocked on both sides. Then you will not have front wheel dragging on the drive train and only the rear wheels will be the drive tire. TO put it back in 4x4. Turn the knob back to locked on each front tire and put the truck in 4H or 4 High to get 4x4. Only use 4L or 4Low when your stuck to prevent spinning your tires with full power. Now if your has the automatic locking hubs I would switch them out with manual ones because the automatic ones were problematic where they get stuck or not work at all. It requires replacing the locking hub assembly which isn't that hard to do.