Q: Number 3 cylinder not working

asked by on

I had the computer replaced and now the number 3 cylinder isn't working.

I would need more information about why the computer was replaced. After going over the previous work of the car, we would confirm cylinder 3 is missing and then it’s a simple process of elimination. We would then check for spark, for the correct pressure. Then we would check your fuel injector and verify that it is being commanded to operate by the PCM. If all of that checks out, we then want to check the mechanical condition of the cylinder by checking its compression. If your engine is skipping its because one of these is not there. I would recommend having a mechanic, such as one from YourMechanic, come and inspect your vehicle to diagnose your cylinder problem.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 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. Number 3 cylinder not working

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: Truck computer not recognizing key.

The Ford PATS (Passive Ant-Theft System) will react like this when the key is not recognized. The key not being recognized could be one of 3 factors, bad key, faulty PATS antenna ring, or a faulty PATS computer. Try all...

Q: My car has been driving funny. When I pull off it hesitates..like it doesn't have enough power.

It may be your TPS like your father said, but tests would need to be done to diagnose it. If you have codes in the computer it would help with the diagnosis. The TPS is not a common problem with...

Q: Key does not always start car

The issue might not be the lock cylinder. The issue could be your key is worn. Worn keys will not depress the tumbler enough to engage the lock cylinder correctly. When you wiggle the key you depress the tumbler enabling...

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...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
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...