Question about 2008 Jeep Grand Cherokee
No it does not need a tune up in regards to spark plug wires and ignition related components at 39,000 miles, however air cleaners, and pcv valves should be replaced ever 10 - 15,000 miles. The primary Oxygen Sensor should be replaced at 60 to 80,000 mile intervals and the fuel filter done no later than 100,000 miles, hope this helps.
Posted on Oct 02, 2009
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Posted on Jan 02, 2017
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