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?

A: Before considering the replacement of the P...

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

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: I'm hearing popping noises and rattles when I drive or go over pot holes

Hello. Unfortunately it sounds like you may have replaced some parts that may not have been needed. The most common cause of this noise on your vehicle is the front struts and the front stabilizer link pins. I start by...

Q: have a 92 accord that after driving it about 20 minutes it's starts hesitating. I have to floor it to get it to go until the check

Hi there. The most common cause of this is the distributor itself. The distributor starts to fail which causes the internal sensor to not read correctly and it will also cause the coil to overheat in some cases. The Check...

Q: Car refuses to start.

I need more information to diagnose this problem. Does the car turn over or not? I would have a technician look at it to determine what the problem is because it could be a number of things that would stop...

Related articles

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...
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...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.