Skip the auto shop - Our mechanics make house calls

Q: F-150 will not run when it is over 70 degrees

asked by on

F-150 1994 with a 302 V8. If it's over 70 degrees ambient air temperature, it won't run. If it's below 70, it runs just fine. Have you ever heard anything like this?

A: I see stuff like that all the time. A lot o...

I see stuff like that all the time. A lot of times it’s the temperature sensor for the computer that has gone bad. It tells when the engine is hot and when it’s cold. If it gets too hot outside, it might be shortened out, giving the wrong temperature. Then it gives the wrong amount of fuel to the engine. Then the thing just shorts out. Check that first and also you might have to get the main computer checked, because I’ve seen many computers, sometimes when it gets too warm, they just start to short out. It could be the main computer too. Have the car inspected in person by a technician, such as one from YourMechanic, they will be able to determine if there is an overheating issue that is causing a problem.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Design and quality of modern cars

They can have as much as they want now. There are no if's, and's, or but's about it. I'll give you a story that goes back to my childhood. When I was a kid, my parents bought one of those...

Q: Engine gets hotter sitting in traffic - 2007 Chevrolet Malibu

Hi there. This could be normal operation, but the cooling fans could be starting to have issues. Perform a visual inspection of the cooling fans to make sure when they come on that they operate properly; they should move a...

Q: What kind of information is displayed on the gauges on the dashboard?

The dashboard displays all kinds of information on how your vehicle is performing. There are several different lights and gauges for different operations on your vehicle. To understand the gauges. Engine Oil Pressure. This will tell you the pressure...

Related articles

How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.