Skip the auto shop - Our mechanics make house calls

Q: Bonneville Stalls Intermittently while idling and while on freeway

asked by on

I've been having a problem with my Bonneville. It's been stalling on me intermittently. About a month ago it stalled at a red light and I couldn't start it up again. I had it towed and it turned out to be that the MAF had failed. After I got the sensor replaced and it was fine for about a month, until it stalled on me last week while stopped at a red light and while driving at 50 mph on the freeway. The same issue happened to me before about a year and a half ago. I assumed it was the crank position and cam sensors since I had these replaced on my previous Bonneville when it stalled. After replacing the sensors it was running perfectly until it stalled last month. I have brought the car to my mechanic, who was unable to find anything wrong with it. I decided to take it to the Chevy dealer and see if they could find anything that is causing the car to stall. I forgot to mention the ICM was replaced at 60,000 miles. Was wondering if you have any idea as to whats wrong. Thanks

My car has 90500 miles.
My car has an automatic transmission.

Without visually inspecting the problem, it would be hard to see why the stall happens. These vehicles have many possible problems and you replaced most of them. This is not to say that is it is impossible for one of these parts to be failing again. Since this is an intermittent problem, this makes the issue tougher to diagnose. Only way to find the problem is to visually inspect the vehicle, scan for codes, check fuel pressure, and check for spark as the problem is happening. If you want to have this diagnosed, a technician from YourMechanic can come to your car’s location to inspect your stalling issue and determine what is going wrong.

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: Windows not working.

If none of the windows are working from any of the switches, there must be a common circuit problem. The first thing I would do is check the fuse. Fuse information can be found in your owner's manual. If the...

Q: My car revs by itself when idle sometimes the car jerks a little what is the problem?

It sounds like you may have a dirty or failing idle air control valve. The idle air control valve monitors the air intake as it is mixed with fuel prior to being injected into the engine at low speeds and...

Q: Can I drive my car with the rotors warped until I get it fixed next week?

Hi, thanks for your question. There should not be any major concern to drive with them this way assuming it is still drivable other than the vibration and noise as you have experienced. Be sure to give yourself extra time...

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...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...