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Engine sputters and bogs during acceleration

Tiny
MAX KEITHDAVID GARRETT
  • MEMBER
  • 1995 FORD WINDSTAR
  • 3.8L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 150,000 MILES
Idle is good, but when I accelerate, especially going up hills, the engine coughs and sputters and won't even go the speed limit. I changed the spark plugs, oil, fuel filter, air filter, and used fuel injector cleaner. Idle is perfect; acceleration still bad.
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Wednesday, June 12th, 2019 AT 12:41 PM

1 Reply

Tiny
KASEKENNY
  • MECHANIC
  • 18,907 POSTS
Hi Max,

Sounds like this is a weak fuel pump. Let's start with getting fuel pressure readings when the vehicle is acting up.

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

Once you get the fuel pressure, I suspect we will find it is not the proper PSI.

Please let me know what you find. Just in case, I included the procedure on how to replace the pump.

https://www.2carpros.com/articles/how-to-replace-an-electric-fuel-pump
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Wednesday, June 12th, 2019 AT 1:54 PM

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