Skip the auto shop - Our mechanics make house calls

Q: Stalling headlights blower on. 1986 Chevrolet K10

asked by on

When my truck was under load with my headlights and the blower on it will stall. It lost all radio presets and everything else. I have replaced the battery, alternator, starter, ignition switch, wiring from the battery to the starter and the starter to the alternator. I have also replaced all the wiring in the air conditioner, heater, electronics, resister and relay, blower motor, and the headlight switch was replaced, too. Do you have any bright ideas or suggestions?

A: Hello. I know you have replaced quite a bit...

Hello. I know you have replaced quite a bit of parts, but most of the time, this is caused by either the positive battery cable failing, or (more commonly) the fuse box. The fuse box is the most common point of electronic failure on this vehicle that will cause this. I usually remove the fuse box and test it and look for any melted parts. It can also occur in the junction block at the firewall, but that is not as common. If you would like to have this taken care of, consider having a qualified professional, such as one from YourMechanic, diagnose the stalling problem firsthand in order to have this corrected.

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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: Idles very rough when heater/defroster is on

Hello, thank you for writing in. The vehicle is put under extra load when the climate control is turned on. The engine is impacted different ways by the different systems. Typically when the defroster is turned on, it uses the...

Q: Interior lights turn off. 1986 Chevy K10

Hello. Typically this is caused by a short in the combination switch. These circuits run through there and the fuse box so it may also have a short in the fuse box. I usually do a complete test with a...

Q: How do I make a call from the phone book?

The phone book feature allows you to easily access the contacts in your cell phone’s phone book through the infotainment system. Once the phone book has been accessed, you can call any of the contacts. Here’s how you can make...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...