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V8-7.5L

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Gas filler neck rejects fuel immediately.
Your fuel neck has a restriction in the hose. The filler neck has a big hose on the out side and a smaller hose on the inside. If someone tried to siphon gas from your truck they may have knocked...
Question
Transmission won't shift and the speedometer stop
The sensor in the center of the rear axle is used for the speedometer and transmission shifting. Remove the sensor and look for excessive metal paste or chunks on the sensor which would mean the rear axle assembly may have...
Question
Motor home dying when slowing
If it was the fuel filter, then the engine would die or lose power while accelerating. I think the problem you are having is with the idle control valve. When the idle control valve is going bad, then your will...
Question
The high beams won't work, and when I try to turn them on, all my other lights dim bright and the motor bogs down a little
Hi, thanks for writing in. The power for the headlights run through the switch on this truck (vs using relays to get full 12v to the bulbs. So the switch, or its connector plug has probably failed and must be...
Question
No current to fuel pump
First, I would check the inertia switch. This switch opens on perceived impact and prevents power from getting to the fuel pump. There should be continuity across the switch at all times. If the switch is good, I would check...
Question
Will my transmission swap work?
The 1988 F250 had a S5-42 manual transmission and the 1996 had a S5-47 transmission. The two transmissions are different models and may have different gearing inside. The difference may also be one that is from a 2-wheel drive, and...
Question
I am trying to locate the headlight adjuster for my pickup but I can't find it
There is an adjuster on the outside, near the top of light. You may have to remove the trim panel to get to it. The other is located behind the light on the inside. It is on a long rod...
Question
I am swapping transmissions
You may need to look at how the 1996 bolted up and how the 1988 bolted up. If the 1996 bolts up the same as the 1988 did then use the newer design. You may find they are close to...
Question
It is difficult to shift gears
Unlike newer vehicles that use a cable to connect the shift lever in the car to the transmission, vehicles from your cars era use actual mechanical linkages for this. If the grommets that keep the linkages together and tight get...
Question
Vehicle hard to start
The carburetor on your van may have gotten sediment from the fuel system into it, which causes the jets to get clogged. I recommend having the fuel pump checked to see if it is working properly and sending the right...
Question
1992 Ford F-350 won't start or when it does only drives 20 ft then dies
Hey there, thanks for writing in about your 1992 Ford F-350. There are a few angles to cover when checking for problems on a stalling vehicle. The fuel pressure must be correct and a clogged fuel filter can lead to...
Question
Cranking no start has spark fuel 38 pulse at fuel injectors
Hi, thanks for writing in. Although you can have a "spark" (appearing on an external test), the plugs could be fouled enough to cause a no start condition, especially if you have tried repeatedly to start the engine and consequently...
Question
Press throttle hesatation press little further and smooths out somewhat
It is possible that you could have an issue with your fuel system. The engine is acting as if it is not getting enough fuel. I would recommend having a qualified technician test your fuel pressure to determine if it...
Question
Does it have a crankshaft piston sensor
There is a technical bulletin, TSB 89-24-9, for a hard start after a short heat soak. The engine control module does not control ignition timing correctly when hot and thermostat lets engine get too hot. The recommendation would be to...
Question
Battery voltage is low.
Hello. If the battery voltage reads low on the gauge then that is a sign that the charging system is not functioning correctly. If the alternator is brand new then there is little chance that it is the source of...
Question
Installed a new thermostat and now it won't hardly idle and Boggs down when driving
Hi there: Typically swapping out the thermostat only won't be the source of idle issues. However, if your 96 Ford F-250 overheated which stimulated the thermostat change, it's possible that other components may have been damaged. Some things you might...
Question
My vacuum pump seems to be leaking water
Hi and thanks for contacting YourMechanic. Vacuum pumps are required to have oil in them for lubrication. If the pump is leaking water, then either the oil is the wrong type and is leaking out, or the pump has a...
Question
Should I have a massive cooling system replacement done?
To answer your last question first, if the truck is "overheating", you can't drive it at all, not even to a repair facility. Overheating, if severe enough, has the effect of warping the cylinder heads, block, and manifolds. Even if...
Question
What are the differences between distributor types for my truck?
Hi there. In 1987 Ford used a TFI (thick film integrated) module attached to the distributor housing, where timing is computer controlled, and a Dura-spark ignition module attached to the left inner fender, where timing is still mechanically and vacuum...
Question
My car backfires at 50 mph.
Hi there. There is a timing problem with your engine. Check the vacuum advance to see if its advancing when the engine is at a higher rpm. Also check the spark plugs and wires for if they are burned but...

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