Case file · JEEP-WRANGLER-2007-2018 · Field document

Jeep Wrangler 2007–2018 · Pre-purchase checklist

Bring this to the inspection. Every check below is specific to this generation's documented failure modes, not generic used-car advice.

1. Check 01

   Drive at highway speed and hit a few expansion joints/bumps. Any front-end shimmy that builds into a violent shake (death wobble) means a steering/suspension inspection before you buy: track bar, ball joints, tie rods, steering damper.

2. Check 02

   On 2012–2013 3.6L cars: scan for cylinder 2/4/6 misfire codes and listen for a top-end tick. Ask whether the left cylinder head was replaced under Chrysler's warranty extension; a documented replacement is a plus, not a minus.

3. Check 03

   On 2007–2011 3.8L cars: check the oil level and ask the owner how often they top it off. A quart every 1,500–2,000 miles is common. Look under for exhaust manifold ticking on cold start and weeping intake/thermostat gaskets.

4. Check 04

   On any Pentastar (3.6L): look for oil seepage and dried oil down the back of the engine valley. The plastic oil cooler/filter housing leaks oil and coolant.

5. Check 05

   Test EVERY power window and door lock several times. Listen for a pop or grind. Window regulators snap a cable and drop the glass.

6. Check 06

   Try several cold and warm starts. An intermittent crank-no-start, a fuel pump that won't prime, or odd electrical gremlins point at the TIPM.

7. Check 07

   Crawl the frame, especially behind the rear wheels and at the rear crossmember. JK frames rust in salt states; check for perforation and bad past welds.

8. Check 08

   If lifted, ask for receipts. A lift done wrong is the #1 trigger for death wobble and a common reason a 'great deal' becomes a steering project.