20 Most Recent 1990 Ford F150 - Page 6 Questions & Answers

Make sure the cooling system is not plugged up, poor coolant flow can make your engine run hot, and a plugged heater core will not allow heat in the cabin in the winter.

Should be under the glove compartment or in the kick panel near the passenger door.

Please ask an actual question that can be answered.

DO NOT omit the 10 gauge ground wire

There is a plastic shield around the front gas tank. Guess what? Dirt gets in between it and the steel gas tank, add a little vibration and viola! Rust through!! Another "Better Idea"???

ok how is the fuel pressure ,what about the timing,do you have a clean air filter,while it is running move the plug wire to find were the miss is,is your egr valve working good,check your injectors to see if they are clog if you have a miss check that cylinder compression

It can be for many things,so first let's do the one that you can do! are you male or female? I ask so that i know i can talk about specific tools! First of anything you should go and check the fuse! I do not know if you still have the maintenance guide but there you will find the fuse's picture and the position of each fuse. if you have no idea of what i am talking about then go on internet and google your car's brand,year and model specifying about fuses panel' s picture. let me know! Cris,The best on FixYa

you need to get a test light to test each wire to see what wires are hot and what wires are ground {gen/ red / yellow/blue/purple/ you need to be very careful on these things some are for power locks and up and down for reversing the volts

Positives are red,black for negative and green/ yellow for ground! hope it was helpful! please contact me in reply for further info! thanks, Cris,the best you can find on FIXYA

go to http://www.youtube.com/watch?v=3fxpQmGpeqM. This is video and a diagram on repolacing the belt.

Look into the speedometer issue. The pcm won't shift the transmission right without the speed input. Check the vehicle speed sensor. Is it 2 or 4 wheel drive?

First, we need to know if it's a manual to automatic!

You need to inspect the feed line if the return line is squezed or kinked in any place it will impede return and the cylinder will seem stuck. If the lines are servicable remove the cylinder and bench test and bleed. it might be a burr left in the cylinder. Also check travel of the pedal without the system in place. Finally When I replace one of these units I have to bleed it out of the vehicle with another person holding the slave cylinder because there is no bleed screw on the slave cylinder. If you removed the little brass screw you broke it. I find there is no way to get out all the air unless the slave cylinder is held verticle with consant pressure applied to the throw arm. Then when bled reinsert into vehicle.

The oil pump in the pan is worn and needs to be replaced. Idle speed will not turn it fast enough to pump up the pressure. Common problem.

Your alternator has a short. You need to replace the alternator. or it will keep draining to battery.

Disconnect any one of the cable from battery (either + or - ) and in series with battery connect a 12v bulb of low wattage say 5w or 10w. By connecting in series I mean one wire of bulb goes to disconnected battery cable and the other wire to the terminal of battery from where you disconnected the cable. Now observe the filament of bulb, if it glows then your battery is draining due to short in your vehicle electrical system. You need to locate this short circuit and fix it, otherwise your new battery would also drain. Let us know what you found out.