Symptoms of a Bad or Failing Electronic Spark Control

Schedule Starting And Charging Inspection
Service Area

$0.00

Upfront, Transparent Price
Average rating from 130,153 customers who received a Starting And Charging Inspection.

Modern vehicles are equipped with a variety of electronic sensors and modules to control the various engine functions necessary for the vehicle to run. One of these components is the electronic spark control module, commonly referred to as the ESC module, or the ignition module. The ignition module works together with the computer to time the engine’s ignition system for the best performance and efficiency. One of the specific functions of the ESC module is to advance or retard the timing of the ignition system, depending on the operation conditions.

Under heavy load, the module will advance the timing to increase power and will retard it at low throttle and cruising speeds in order to maximize efficiency. The ESC module makes these changes automatically and smoothly, almost to the point where they are virtually unnoticeable to the driver. As the ESC module plays an important role in the operation of the engine, any problems with it can cause issues with the drivability and performance of the vehicle. Usually a bad or failing ESC module will produce a few symptoms that can alert the driver of a potential issue that should be serviced.

1. Engine performance issues

One of the first symptoms of a problem with the ignition module are engine performance issues. If the ignition module fails or has any problems it can lead to performance issues with the vehicle, such as misfires, hesitation, loss of power, and even reduced fuel economy.

2. Engine stalling

Another symptom of a problematic ESC module is the engine stalling. A faulty module may cause the engine to suddenly stall and be unable to start again. Sometimes the engine can still be restarted after a short period of time, usually after the module has been allowed to cool off.

3. Car not starting or engine not sparking

Another common symptom of a faulty ESC module is a no start, or no spark condition. The ESC module is one of the components that directly controls engine spark, so if it fails, it can leave the vehicle without spark. A vehicle without spark may still crank, but will not be able to start or run.

The ESC module is one of the most important components found on many modern ignition systems, and without it most vehicles will not run properly. If you suspect that your ESC module may be having an issue, have the vehicle inspected by a professional technician, such as one from YourMechanic, to determine if your vehicle needs an electronic spark control replacement.


Next Step

Schedule Starting And Charging Inspection

The most popular service booked by readers of this article is Starting And Charging Inspection. Yourmechanic’s technicians bring the dealership to you by performing this job at your home or office 7 days a week between 7AM-9PM. We currently cover over 10k cities and have 100k+ 5-star reviews... LEARN MORE

SEE PRICING & SCHEDULING

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Recent Starting And Charging Inspection reviews

Excellent Rating


YourMechanic Starting And Charging Inspection Service

Average Rating

4.9/5

Number of Reviews

130,153

Rating Summary
121,515
4,808
964
664
2,202
121,515
4,808
964
664
2,202

James

29 years of experience
627 reviews
James
29 years of experience
Infiniti I35 - Alternator - Altamonte Springs, Florida
Flawless!

Brian

22 years of experience
292 reviews
Brian
22 years of experience
Toyota Tundra - AC is not working - Jacksonville, Florida
Went above and beyond, very trustworthy.

Ben

27 years of experience
17 reviews
Ben
27 years of experience
Hyundai Elantra - Check Engine Light is on - Virginia Beach, Virginia
Ben was on time and knowledgeable in describing the issues with my car

Chris

17 years of experience
366 reviews
Chris
17 years of experience
Chrysler Sebring - Window Motor / Regulator Assembly Replacement (Driver Side Front, Passenger Side Front) - Richmond, Texas
Great tech...very professional

Need Help With Your Car?

Our certified mobile mechanics make house calls in over 2,000 U.S. cities. Fast, free online quotes for your car repair.

GET A QUOTE