← Power loss / limp mode on all engines
Symptoms · ProMaster 3.6 (gas)
ProMaster 3.6 (gas): loss of power, limp mode or derate
2 documented failures on this engine list this among their signs. They are ordered from the most widespread down. Each one shows the signs in its record's own words, how to tell it from the others, the usual fix and any recall or bulletin.
Not sure which engine you have, or want the recalls for your exact truck? Check your VIN: it names the engine and lists the campaigns for that model year. Whether a recall is still open on your VIN: nhtsa.gov/recalls.
aggregated
How widespread: Common
6 NHTSA owner complaints match it, out of 459 checked
How it shows up
- misfires or power loss as a follower collapses
Its other signs
- ticking/tapping from the top end that persists warm
- metallic debris at oil services in advanced cases (cam damage)
How to tell it apart
- locate the tick per cylinder (hose/stethoscope); rule out exhaust leaks first
- compression and leak-down before pulling the valve cover
- inspect rockers and lash adjusters at the suspect cylinder; check the cam lobe
Usual fix
rocker arm / lash adjuster replacement; camshaft replacement where a lobe is damaged
Root cause, parts and sources →
aggregated
How widespread: Occasional
13 NHTSA owner complaints match it, out of 459 checked
How it shows up
- phaser/limp codes on the VVT side
Its other signs
- cam/crank correlation DTCs, hard start or stall
- intermittent no-start that returns
How to tell it apart
- read correlation DTCs and live cam/crank data
- actuate the phaser solenoid; check screens for debris
- replace per DTC direction; verify battery health first
Usual fix
cam/crank sensor or phaser actuator replacement per DTC
Root cause, parts and sources →
Other symptoms on the ProMaster 3.6 (gas)
Hard start, long crank or no-startStalls or dies while drivingLosing coolantMisfire, rough idle, hesitation or surging
Everything on the ProMaster 3.6 (gas)Its recalls and bulletins