20 Most Recent 1986 Ford F 250 - Page 5 Questions & Answers

Starves for gas??? Starts to stall? Sputters idles funny?? Gas and O2 issues ackd alike. Gas starvation is usually a filter problem or god fobid the Fuel pump. Do you smell gas? See a leak??? Need more info here

One or more pair of rectifiers has likely failed in the alternator. The older FOMOCO alternators had a horshoe shaped mounting plate that delaminates and usually takes our a few diodes. As long as at least one pair remains intact, it will produce adequate charging voltage, but current output will be greatly diminished.Easiest thing to do is replace the alternator.

Car not starting or turning over indicates towards multiple possibilities. It can be issue with battery or weak battery. But if battery checks out ok, then it can be starter issue or faulty alternator or problem with low fuel pressure or no spark at spark plugs due to dirty spark plugs or faulty ignition coil or injectors getting cracked or dirty and needs to be cleaned.

To confirm the problem, the basic troubleshooting is required.

Click this link below and follow the troubleshooting:------

http://technoanswers.blogspot.in/2012/02/car-starting-issues.html

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This will help.

Thanks.

There is just one switch, so not sure what you are referring to here.

not locks ur key is probably worn down if both doors are not opening with key than problem is with key have a key cut and try locks [thats if u dont have a spare key to use ] if new key wont work than wil need to replace locks look in bone yard cheapest online moderate price dealer higher[or use vin number for new key can be pricey ]

Did you prime the pump ?

1. Constant 12 Volts - Light Green
2. Switched 12 Volts - Yellow/Black
3. Ground - Chassis
4. Illumination - Blue/Brown
5. Antenna - Right Front
6. Front Speakers - 5 1/4" Doors
7. Left Front (positive) - Green
8. Left Front (negative) - Black/White
9. Right Front - (positive) - White/Red
10. Right Front - (negative) - Black/White

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• Hope this helps and thank you for using FixYa.

Regards, Tony

What is the odometer reading on this truck?
==========
I believe "CL" is short for crew cab long wheel base.
Record the VIN and license plate number and check for the current status of the registration and back fee.

Link HERE to the Ford VIN decoder for all STOCK equipment that originally equipped with the truck.
========= Check for color of the oil. Warm up the truck and do a long test drive so look for white smoke from the tailpipe
Coolant,oil,transmission and rear diff fluid + filter changes are given. ($220+) =========
========= Vacuum leak will occur on old line.
ALL rubber fuel lines and vacuum lines will need to replace. ($60+) Dual tanks? (fuel select valve can crack $80) =========
========= Open the gas cap and smell for rotten egg odor.
Tanks should be drain and boil out. ($80+) =========
========= Radiator + cap should be replace.($200) =========
All coolant hoses ($50+)
Exhaust leak should leak it to the professional, ==========
Make sure the current owner did not place the truck on non-operational 10 years ago.
You do not need to get stuck with years of back fee.

Sounds like the selonoid at the switching valve is not working.

Hello, The fuel pump should be on the front lower block on the Drivers side. Sometimes it is easier to work underneath the truck where the bolts are. If you have a stone shield it will be easier if you take it off.

The pump will unbolt. Take off your fuellines before loosening the pump. The fuel pump has a lever which you will see on the new pump. A cam rotates and presses on the lever to push or make a stroke. When you are pulling off the pump, if the pump seems to raise up while you are unbolting it there is a trick to making this easier.

You need to rotate the engine, either with a socket on the crankbolt and breaker bar, or bump the starter. There is a dead spot on the operating cam that will release the spring tension. Just turn the motor to that spot and the fuel pump will practically fall out when you unbolt it. Use a good quality gasket on the replacement.

I hope my solution is very helpful to you.