Skip the auto shop - Our mechanics make house calls

Q: Check engine light came on and it sounds like one or two cylinders are not running.

asked by on

My trucks check engine light came on and I suddenly lost a lot of power. It happened right after I pulled onto another road and tried accelerating. It sounds like one or two cylinders are not running. No visible smoke or fuel smell out of the exhaust.

My car has 157000 miles.
My car has an automatic transmission.

Hello. If the Check Engine Light is on, then the first thing I would do is retrieve the trouble codes. The Check Engine Light is likely related to your performance issues and retrieving the trouble codes may reveal some information as to what the problem could be. The fact that there is no fuel smell or smoke is a good sign. However, a loss of power can be caused by many things that would not produce either of those symptoms. A few things to look into would be the fuel system, the ignition system, and the engine management system. If you need help having this looked at, a certified professional from YourMechanic can come to your car’s location to diagnose the Check Engine Light along with the loss of power.

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!
  1. Home
  2. Questions
  3. Check engine light came on and it sounds like one or two cylinders are not running.

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: How do I shift between 4WD and 2WD?

It’s easy to shift between four-wheel drive (4WD) and two-wheel drive (2WD) in your car. Here’s how. Slow your vehicle to a crawl (preferably 1-3 mph). Shift your transmission into neutral. Turn the transfer control case (the shifter...

Q: Bad idle air control valve

Hi there. I would need to know what the codes are to know if they are related. The idle control valve failing can cause other codes to come up, but there are other problems and codes that can come up...

Q: When replacing the oil cooler do i need to put O rings on it as well? 2002 Dodge 3500 CummingsDiesel

Hi - yes, absolutely change the o-rings. They get brittle with heat and age, lose their resilience, and you have oil leaks. If you would like assistance with this task, I would recommend having the oil cooler replaced by a...

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
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...
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...