Skip the auto shop - Our mechanics make house calls

Q: Driver has to gas engine to prevent shutting down

asked by on

My pickup has been running rough and I want to fix this, as well as a problem with the engine. When I turn on my truck and begin to drive it, the engine shuts down while I'm driving. If I can tell it is about to happen, I can give it gas and prevent its quitting. This is not only annoying, but cause for concern for my safety and my passengers. I also want to tune up my truck. It gets 26 mpg mileage, which is great; however, I think it could get even better. What should be my next step in getting my pickup in top rate performance?

Hello there, thank you for asking about your 1993 Isuzu Pickup. If you’re getting 26 mpg in a 23 year old truck, that’s as good as it gets. As far as the stalling out, there are many potential causes. Since you said it will stay running if you give it gas, my first thought is lack of fuel pressure. This could be due to a failing pump or pressure regulator. Of course, applying the throttle also changes engine load and manifold vacuum, which can affect a number of onboard sensors and components. The only way to know the exact cause is to have your vehicle inspected by a professional, such as one from YourMechanic, who can inspect your car stalling problem and replace the fuel pump or fuel pressure regulator if necessary.

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・Fair and transparent pricing

Get a quote

What others are asking

Q: Short-term fuel trim swinging plus or minus 10% during driving

Yes, this is normal when you accelerate and decelerate. Your vehicle will add fuel at times, and when you take your foot off the gas, it will subtract. This is normal for any vehicle, even my Toyota does this. Once...

Q: Black smoke issuing from vehicle and burning oil.

Hello, There is a common problem with the PCV valve allowing oil to enter into the intake and burn oil on these cars. There is a modified PCV valve that has been made to prevent this from happening. I would...

Q: Water Pump Issue

Hey there, thanks for writing in about your 1993 Mazda Miata. You need to remove the water pump belt and see if the alternator or water pump is seized since both are turned by the same belt. If the water...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
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...
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.