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Engine light stays on, idles rough

Tiny
CARRIE ROBERTS
  • MEMBER
  • 2004 MERCURY SABLE
  • 6.0L
  • AUTOMATIC
  • 140,000 MILES
Catalytic converter? Engine light stays on, idles rough
Saturday, April 3rd, 2021 AT 2:24 PM

3 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good morning,

There are many reasons that could cause rough running. I attached a guide for you of possibilities.

https://www.2carpros.com/articles/engine-misfires-or-runs-rough

I would check the compression to be sure the engine is still good. You should have 140-160 pounds in each cylinder.

https://www.2carpros.com/articles/how-to-test-engine-compression

Did you have the code checked for the engine light? I need that code to help narrow the area of failure.

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

Roy
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Sunday, April 4th, 2021 AT 6:07 AM
Tiny
CARRIE ROBERTS
  • MEMBER
  • 1 POST
2CarPros.

Thank you for responding. I have taken it to a shop. I was charged for a leak in the manifold. Also replacing a coil. It still chokes out.

Carrie Roberts
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Thursday, April 29th, 2021 AT 4:38 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,536 POSTS
Can you please shoot a quick video with your phone so we can see what's going on? That would be great. You can upload it here with your response.
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Thursday, April 29th, 2021 AT 4:39 PM

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