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

2004 JEEP LIBERTY
135,000 MILES • 3.7L • 6 CYL • 4WD • MANUAL
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GEORGE H. SMITH JR.
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  • 1 POST
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?
Dec 28, 2016 at 7:03 AM
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STRAILER
  • ✓ASE Certified Mechanic
  • 54,832 POSTS
  • ASE Certified Mechanic
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
Dec 31, 2016 at 2:18 PM
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