Throws check engine light, then stalls

Tiny
MARK LEASURE
  • MEMBER
  • 2004 CHRYSLER PT CRUISER
  • 2.4L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 149,000 MILES
Car throws light either solid or blinking then solid. Then car stalls out. Have to wait to start. Multiple mechanics cannot figure it out. New one says o2 sensor bad, so I replaced it. Checked scanner again and now says bank 2 is bad. Car still runs. But had anyone had their car continually do this. Getting irritated with it doing this. Not good in high traffic areas when it cuts out. Runs fine with check engine light on. Will replacing bank 2 o2 sensor fix this?
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Friday, May 11th, 2018 AT 5:31 AM

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Tiny
JACOBANDNICKOLAS
  • EXPERT
Hi and thanks for using 2CarPros.com. A blinking light usually indicates a severe engine misfire. I am not sure exactly what codes you are getting. However, this could be the result of several things. If the engine is misfiring, that means it is sending raw fuel into the catalytic converter which can damage it.

If the vehicle has not been tuned in a while, you may want to consider that first to see if it eliminates the misfire. If that does not correct the issue, then I would check fuel pump pressure as well as the fuel pressure regulator.

Here is a video that will guide you on how that is done:

The fuel pressure for your vehicle should be (58 5 psi) with the key on engine off.
https://youtu.be/peh7-pFycyc

If the pressure is good, I would next check the coolant temp sensor, CTS. There are two coolant sensors. One is for the gauge in the vehicle and the other tells the computer the coolant temperature. The computer takes the temperature readings and then determines how rich or lean to make the fuel mixture. If it is too lean or too rich, it will cause a misfire which could lead to the other issues. The easiest way to check one is with a live time scanner. You can simply look at live data to determine what temperature the computer is receiving.

If you determine the sensor is the problem, it will need replaced. I have attached a picture of its location.

I hope this helps. Please keep in mind, without knowing specific codes, it is difficult.

Take care,
Joe
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Friday, May 11th, 2018 AT 8:51 PM

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