engine will stop running then it catches on again?

1999 MERCURY MOUNTAINEER
176,000 MILES • 4.0L • V6 • 4WD • AUTOMATIC
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NEKGIB
  • MEMBER
  • 1 POST
just started to cut in and out, feels like it will stop running then it catches on again. I nursed it home for about 5 miles and it did stall once. I started it up after about an hour and it was ok for alittle while then started cutting in and out. could it be computer/mass air flow/relays?
Jan 27, 2015 at 8:36 AM
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CADIEMAN
  • ✓Experienced Mechanic
  • 3,544 POSTS
this can be a fuel problem or a electrical problem. you will need to take to have the codes checked at the parts store and while you are the rent a fuel pressure gauge. then ck. the fuel pressure when acting up. then come back we can help u.
Jan 27, 2015 at 9:50 AM
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STRAILER
  • ✓Experienced Mechanic
  • 55,658 POSTS
Yep this can be many things included the MAF sensor, I would run the codes which this guide can help with and if a code comes up for the MAF I would replace it.

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

Here is the MAF sensor location. Check out the images (below). Please let us know what happens.
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Sep 7, 2024 at 3:02 AM
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