Skip the auto shop - Our mechanics make house calls

Q: No spark on cylinder 1 and 4

asked by on

I've been working on my car the past week, and it’s not sparking on cylinder one and cylinder four. So I changed the coil, camshaft sensor and crankshaft sensor. But now I'm not getting any error codes, and it's still not sparkling on those cylinders. Do you think the Powertrain Control Module is shot? Do you have any ideas?

Before considering the replacement of the PCM, return the coil pack to the parts store and ask for it to be tested. It is not uncommon to receive a faulted new part. Spark has to travel from the coil, through a wire and to a spark plug for each cylinder so each it is possible that there can be issues at any one of these components when you are considering spark problems. I recommend that you have another certified professional, like one from YourMechanic, come to your home or office to diagnose the ignition system and pinpoint the faulty components before proceeding with repair.

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: My 06 PT Cruiser will not start and the Check Engine Light is on. It turns but will not start, what does this mean?

Hello - first task is to determine what problem codes are set with the Check Engine Light. It is possible this is a problem with the wireless control module being "locked up". There is a Chrysler technical service bulletin (232597)...

Q: Code reading p0010 camshaft changed that having same problem car starts but don't stay running sometimes can it be sensors solend

A p0010 fault code does show that there is a problem with the camshaft actuator valve control circuit. This code is set when the computer is commanding a certain position for the actuator on the camshaft, but it is not...

Q: No spark from spark plugs

If you are not getting a spark from the wires, then there may be a problem with the ignition system, or engine management system. As both systems are electrical, and sometimes highly elaborate in nature, I would recommend having a...

Related articles

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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
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.