Need Help?

1986 Ford F150 Custom Reg Cab

1986 Ford F150
Do you own this car?
Estimated Mileage
 Miles
Enter current mileage for most
accurate info about this vehicle


Track Your Service Records
Get Recall Alerts
Get Updated Value Estimates on Your Car.

back to question list

Ask the Community

Ask Our Auto Mechanics


December 13, 2012, 5:45 pm

Ryan F
 

Question: 1986 f150 6 cylinder stalls when warm

it stalls out when it warms up as if i were shutting it off with key, i replaced carb and map and no change, it runs great till it gets warm


December 19, 2012, 10:42 am

Ron W
Expert Mechanic

sounds like the ignition module is failing when it gets hot. Very common failure in 80s Fords. That is where I would start.


0/0 users found this helpful.

December 19, 2012, 8:28 pm

Ryan F
 

I replaced that and it hasn't changed, I'm am completely stumped, I also pulled the thermostat so it didn't heat up and it still shuts down


0/0 users found this helpful.

December 19, 2012, 10:10 pm

Ron W
Expert Mechanic

You really need to determine if it is spark or fuel that you are losing. I suspect it is spark from your description.

If it is loss of spark, check the crank position sensor as well. They can act just like an ignition module (heat up and ail, then work fine when cool)

If it's fuel, Check fuel pressure and quantity to rule out the pump failing when it heats up.


0/0 users found this helpful.

Ask our panel of certified auto mechanics a question. We pay for their advice so you don't have to



My Auto Score

See the free AutoCheck score

Meet The Experts
Kim Perrin
Kim Perrin is our resident mechanic here at DriverSide. Kim worked as…
Tyler Orr
Tyler Orr is an expert in German and Japanese cars and has been a mechanic …
Elizabeth Kriesten
Elizabeth Kriesten worked as an automotive technician for several years at Dodge…
Tips on Servicing

Car Brakes: How Do You Know When to Change Them?

By Zach Bowman For those who suffer a daily commute through heavy traffic, your vehicle's braking system can bring thousands of pounds of metal, plastic and empty Starbucks cups to a stop hundreds of times before you get to work. It goes without saying that these pieces wear out, but they do so slowly, meaning you may not notice they need attention until ...

Read more…