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Engine cutting out

Tiny
AL THOMAS
  • MEMBER
  • 1997 MERCURY MARQUIS
  • 4.6L
  • V8
  • 60,000 MILES
When driving at high speed sixty five mph engine throttles way back, especially on a grade. I can limp to an overpass open the hood disconnect the battery and the car runs great for quite a while. I had it on a trip could go four hundred miles then would act up again. Something smells hot, but gauges show okay.
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Friday, February 23rd, 2018 AT 9:54 AM

3 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,536 POSTS
Hello,

It sounds like you have a crankshaft angle sensor that is going out but we should run the codes to see what comes up.

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

and

https://www.2carpros.com/articles/engine-stalls

Please let us know what you find. We are interested to see what it is.

Cheers, Ken

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Saturday, February 24th, 2018 AT 12:33 PM
Tiny
AL THOMAS
  • MEMBER
  • 2 POSTS
I will check it. Thanks, Al
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Sunday, February 25th, 2018 AT 9:30 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,536 POSTS
Actually it could be the catalytic converters falling apart plugging the exhaust.

Here is a guide to confirm:

https://www.2carpros.com/articles/how-to-test-a-catalytic-converter

Please run down this guide and report back.

Cheers, Ken

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Monday, February 26th, 2018 AT 11:59 AM

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