The firing order for the 3.7-liter RAM PowerTech V6 is 1-6-5-4-3-2. This sequence applies to the six-cylinder engine used in Dodge RAM pickups from the late 2000s into the 2010s.
Understanding the 3.7 PowerTech V6 firing order
The 3.7L PowerTech V6 uses coil-on-plug ignition and a two-bank cylinder layout. Knowing the firing order helps with diagnosing misfires, installing replacement ignition components, and performing routine maintenance. The following sections map the order to cylinder numbers and describe how to verify the arrangement on your engine.
Cylinder banks and numbering
On most Chrysler V6 engines, cylinders are numbered 1-3-5 on Bank 1 and 2-4-6 on Bank 2. The firing sequence for the 3.7 PowerTech is 1-6-5-4-3-2, meaning cylinder 1 fires first, followed by 6, then 5, 4, 3, and finally 2.
The sequence can be visualized as a single chain around the engine, with each number corresponding to a specific coil-on-plug location. Proper wiring and coil placement are essential to maintain the correct rhythm of ignition across both banks.
- Firing order: 1-6-5-4-3-2
- Cylinder numbering reference: Bank 1 (cylinders 1, 3, 5); Bank 2 (cylinders 2, 4, 6)
- Ignition service note: Use the correct coil-on-plug positions for your model year to maintain the proper sequence
In summary, the 3.7 RAM V6 follows the firing order 1-6-5-4-3-2, with Bank 1 consisting of cylinders 1, 3, and 5 and Bank 2 consisting of cylinders 2, 4, and 6.
Practical verification and maintenance tips
To verify the firing order on your vehicle or during ignition-work, follow these steps:
- Identify the coil-on-plug connectors and confirm their labeling corresponds to cylinders 1 through 6.
- Rotate the engine to top dead center (TDC) on cylinder 1 to confirm the first firing position matches the order.
- If replacing multiple coils, reinstall them in the sequence 1-6-5-4-3-2 as specified for the 3.7 PowerTech V6, consulting the service manual for any year-specific variations.
These steps help ensure the ignition system remains in the correct sequence after maintenance or part replacements.
Summary
The 3.7 RAM V6 uses a firing order of 1-6-5-4-3-2, with cylinder numbering aligning Bank 1 (1, 3, 5) and Bank 2 (2, 4, 6). For precise wiring and verification, refer to the vehicle’s service manual or the labeling on the coil harness for your exact model year.