Q: how do you know if a car is vapor locked and how do you fix it?

asked by on

car stalled while driving. would not restart. engine turns over, not overheated and has a half tank of gas. Checked underneath car and fuel pump sounds like it is clicking on, but feels like gas may not be getting to the engine? Because of 108 temp outside, thought maybe it vapor locked? if so, what do I do to fix it, or what are your thoughts on what the problem may be?

My car has 160000 miles.
My car has an automatic transmission.

It is very unlikely that a fuel injected engine is vapor locked (even at 108 degrees). From experience, an electrical component failed based upon heat and mileage of the vehicle. A code scanner will likely lead you to the issue.

If the fuel pump is running, crankshaft position sensors fail frequently on your vehicle and will cause a crank but no start. A technician from YourMechanic can perform a code scan with a diagnostic tool to help determine the cause of your stalling issue.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. how do you know if a car is vapor locked and how do you fix it?

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: Something draining battery maybe radio

The diagnostic would begin with the battery. The battery should be fully charged and then load tested. If the battery passes a load test and charging system output has been measured, too, and is within specifications, the only reason a...

Q: Car sputtering and rough idle

It appears you may have damaged one of the spark plugs putting it in or one of the parts failed. You will need to have the computer tested for codes to see i it stored a failure code for one...

Q: Engine Swap help.

Hi there. Though this would be possible but it would be very expensive. The engine and transmission would fit fine, the issue is electrical. These cars have completely different electrical harnesses and modules. You would need to completely change the...

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...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...