Check engine light always on flashes randomly

2007 MERCURY MILAN
280,000 MILES • 4.6L • V6 • AUTOMATIC
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MISTY1984
  • MEMBER
  • 1 POST
So my check engine light stays on all the time but sometimes while driving it will start to flash. the car will start chugging and the A/C will even start blowing out warm air. this only lasts for less than a minute in the light will stop flashing in the car goes back to normal.
Sep 17, 2019 at 12:19 PM
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SCGRANTURISMO
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 4,897 POSTS
Hello,

When the Malfunction Indicator Lamp (MIL) or "check engine" light is illuminated that means that a Direct Trouble Code (DTC)(s) have been set. When the MIL starts flashing this indicates that a Type A, or a catalyst damaging event is taking place. This is a serious DTC that needs to dealt with immediately or serious engine/transmission damage can occur. Can you please pull the DTC(s) for me. Here is a link below for you to go to explaining how to do that:

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Thanks,
Alex
2CarPros
Sep 17, 2019 at 1:23 PM
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