Moisture May Collect in PCV System and Freeze in Cold Climates on Jeep Liberty

Submitted by Vehicle Owner · May 29, 2025

Published by RepairPal

Problem overview

The 3.7L V6 and 4.7L V8 in very cold climates (below freezing temperatures) moisture can collect in the Positive Crankcase Ventilation (PCV) system and freeze. This will cause various drivability problems and there are revised PCV system components to repair this concern.

21 people reported this problem

4 comments

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Jeep Liberty vehicles with this problem

9 model years affected

Average mileage: 94,600 miles

(73,000 - 136,000)

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