2009 Jeep Wrangler 2WD V6-3.8LFACTORY OEM SERVICE PROCEDURE

Engine Torque Specifications






TORQUE

Factory service manual diagram





CYLINDER HEAD

Factory service manual diagram




Tighten the cylinder head bolts 1-8 in the sequence shown in. Using the 4 step torque turn method, tighten according to the following values:
Step 1: Bolts 1 - 8 to 61 Nm (45 ft. lbs.)
Step 2: Bolts 1 - 8 to 88 Nm (65 ft. lbs.)
Step 3: Bolts 1 - 8 (again) to 88 Nm (65 ft. lbs.)
Step 4: Bolts 1 - 8 turn an additional 1/4 Turn. (Do not use a torque wrench for this step.)

NOTE: Bolt torque after 1/4 turn should be over 122 Nm (90 ft. lbs.). If not, replace the bolt.

HEAD BOLT REUSE/REPLACE

The cylinder head bolts should be examined BEFORE reuse. If the threads are necked down, the bolts must be replaced.

INTAKE MANIFOLD

Factory service manual diagram




Intake Manifold Lower - Bolts 23 Nm (200 in.lbs.)

Factory service manual diagram




Intake Manifold Upper - Bolts 12 Nm (105 in.lbs.)

ROD BEARING CAP

Install connecting rod bolts and tighten to 7 Nm (5 ft. lbs) initially. Tighten the bolts an additional 21 Nm (15 ft. lbs.) and then turn each bolt 90° to final clamping load.
Factory Service Tools

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.

Rather have a pro handle this?

A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.

Comes to youSame-day available12-month warranty
Get a Free Quote

No obligation. See pricing before you book.