Car Problem Reports

Nissan Pathfinder Loose Screws Inside Intake Manifold Can Cause Internal Damage if They Fall Out

Nissan Pathfinder Problem
4 Reports
Me Too

Model Years Affected: 2001, 2002, 2004

Engine Affected: Automatic Transmission

Average Mileage: 124,666 mi (78,000 mi - 188,000 mi)


Screws inside the intake manifold can become loose causing internal engine damage if they fall out completely. Our technicians report that using a strong thread locker on the power valve butterfly screws can help prevent them from becoming loose. The manual transmission models reportedly do not have the intake manifold power valves.

  • Visitor, , 188,000 mi

    replaced screws and included threadlocker on all screws. plate had fallen off and got lodged in the intake manifold. no damage to engine occured.

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  • Visitor, , 78,000 mi

    I heard loud engine knock that lasted a few minutes before disappearing. I removed upper intake plenum to discover 1 missing power valve and two screws. The knock I had heard was power valve screw inside cyl. before it made it's way out the exhaust. I found the loose power valve stuck in an intake runner.

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  • Visitor, , 108,000 mi

    hear noise in the manifold area. maybe having it check would be great!

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