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Loses power when accelerating

Tiny
MARCUS RIOJAS
  • MEMBER
  • 1999 FORD MUSTANG
  • 3.8L
  • 6 CYL
  • RWD
  • AUTOMATIC
  • 130 MILES
What would cause my v6 engine to lose power when accelerating and shake like it wants to turn off? Note - That I already changed the spark plugs, spark plug wires, coil pack, and throttle body sensor
Saturday, June 10th, 2017 AT 1:20 PM

2 Replies

Tiny
HARRY P
  • MECHANIC
  • 2,292 POSTS
Could be low fuel pressure. Either rent a fuel pressure tester and check it or have a mechanic check it. With the key on and engine off, you should get 25-40 psi. With the engine running, you should get 30-50 psi. If you are not getting enough pressure, it could just be clogged fuel filter, or you could need a fuel pump. Let us know.
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Saturday, June 10th, 2017 AT 2:41 PM
Tiny
RENEE L
  • ADMIN
  • 1,260 POSTS
Hi MARCUS RIOJAS,

Here is a helpful link to an article from this site with step by step instructions and pictures explaining the process of checking the fuel-system-pressure-and-regulator.

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

If you need further assistance please come back to the site we are here to help.

Thank you for visiting 2CarPros.com.

Kindest regards,

Renee
Admin
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Saturday, June 10th, 2017 AT 2:44 PM

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