Q: How to replace the air filter and PCV filter in a Jeep Wrangler?
A: Replace the air and PCV filters at regular intervals. The filter can be replaced by unscrewing the wing nut, disconnecting the clips, and removing the cover. On fuel-injected models, the filter is in the engine compartment and can be replaced by disengaging the clips holding the top plate. The PCV filter is also inside the air cleaner housing.