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Engine loses RPM's after hitting 2300 RPM's sometimes

Tiny
GEORGE H. SMITH JR.
  • MEMBER
  • 2004 JEEP LIBERTY
  • 3.7L
  • 6 CYL
  • 4WD
  • MANUAL
  • 135,000 MILES
Changed all oxygen sensors and camshaft sensor engine light stays on. Sometimes at 2300 rpm's engine dies down to idle and the will go back up as long as I do not exceed 2300 rpm's have heard that should use OEM camshaft sensor. Any thoughts?
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Wednesday, December 28th, 2016 AT 7:03 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,883 POSTS
Hey GEORGE,

This sounds like fuel pump problem, it must drop fuel pressure sometimes. Here is a guide to help you see if this is the problem

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

Please run this test and get back to us so we can continue helping you.

Best, Ken
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Saturday, December 31st, 2016 AT 2:18 PM

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