Engine sputters and bogs during acceleration

1995 FORD WINDSTAR
150,000 MILES • 3.8L • 6 CYL • 2WD • AUTOMATIC
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MAX KEITHDAVID GARRETT
  • MEMBER
  • 1 POST
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.
Jun 12, 2019 at 5:41 AM
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KASEKENNY
  • ✓Experienced 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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Jun 12, 2019 at 6:54 AM
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