Chrysler 3.6L Pentastar V6 Engine Repair & Replacement
The 3.6L Pentastar is used across Jeep, Ram, Dodge and Chrysler vehicles. Common complaints include cylinder head issues on earlier versions, oil cooler and filter housing leaks, and rocker arm wear. We repair Pentastar engines for Phoenix-area drivers.
Common applications
- Jeep Wrangler and Grand Cherokee
- Ram 1500
- Dodge Durango and Charger
- Chrysler Pacifica and 300
Known problems and symptoms
A known pattern on some early versions, often presenting as a misfire on a specific bank.
The plastic housing is a common leak source and can also cause coolant loss.
Produces a tick and misfire codes as the valvetrain wears.
Common as vehicles age, and a priority in Arizona heat.
How we diagnose it
- Misfire data and cylinder-specific testing
- Leak inspection with dye or pressure testing
- Compression and leakdown testing
- Valvetrain inspection where indicated
- Cooling system pressure testing
Repair and replacement options
- Cylinder head replacement or service
- Oil filter housing and cooler replacement
- Rocker arm and lifter repair
- Engine replacement or rebuild when required
- Cooling system repair
Chrysler 3.6L Pentastar V6 repair topics
Testing-first diagnosis for 3.6L Pentastar running, noise and warning-light problems.
Left cylinder head valve-seat problems on early Pentastar engines.
Oil cooler / filter housing leaks on the Pentastar.
Misfire diagnosis on the Pentastar.
How we decide between repairing, rebuilding or replacing a 3.6L Pentastar with major internal damage.
Vehicles with this engine
Verified applications with their own pages. Where a model offered several engines, each page explains how to confirm yours.
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Frequently asked questions
My Pentastar has a misfire on one bank. What does that mean?
It narrows the likely causes considerably. On certain earlier versions it is a known cylinder head pattern, but we confirm by test before recommending head work.