2000 — 2004
3.0L V6 (ES9J4S)
Petrol
Accelerate hard in a high gear from 40km/h and monitor for engine hesitation. | Note: The ES9J4S V6 is notorious for failing Sagem ignition coils; any stuttering under load typically indicates one or more coils are dying.
Cycle the ZF 4HP20 automatic transmission through all gears while cold and check for 'Snow/Sport' lights flashing. | Note: Harsh shifts or flashing mode lights suggest valve body wear or old fluid, which can lead to total gearbox failure if not addressed.
Let the car idle for 10 minutes and observe the temperature gauge and cooling fan activation. | Note: The V6 engine bay is very cramped and runs hot; resistor failures for the cooling fans are common and can lead to warped cylinder heads.
Operate the indicators and check for 'ghosting' or the headlights turning off during a turn. | Note: The COM2000 indicator stalk unit is a high-failure item in this era of Peugeot; replacements are costly and require steering wheel removal.
Full synthetic oil change (5W40) and replacement of the cabin pollen filter to protect the blower motor.
Automatic transmission fluid (ATF) partial drain and refill using specific ZF-compatible fluid; spark plug replacement (requires intake manifold removal on the rear bank).
Critical timing belt, tensioner, and water pump replacement. On the ES9 engine, this is a complex, high-labor job that cannot be deferred.
Verify the timing belt was changed within the last 4 years or 80,000km regardless of the 100k interval.
Inspect the rear of the engine block for oil leaks from the cam cover gaskets dripping onto the exhaust.
Check the condition of the lower engine torque mount, which often perishes under the V6's weight.
Ensure the Multi-Function Display (MFD) in the center console is legible and hasn't suffered pixel fade.
Test the operation of the electronic climate control actuators to ensure air is reaching all vents.
Estimated repair costs if issues arise
Extremely high labor component due to the transverse V6 layout and limited space.
Essential preventative maintenance to avoid a $5,000 full gearbox rebuild.
Replacing one usually triggers the failure of others; best to do the whole set plus plugs.
Known to leak onto the alternator; specialized part that often requires ordering from overseas.
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Disclaimer: This report is generated with the assistance of AI analysis based on verified automotive data. While we strive for 100% accuracy, enthusiasts should always conduct physical inspections and consult service records. View Full Disclaimer