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Symptoms · ProMaster 3.6 (gas)

ProMaster 3.6 (gas): hard start, long crank or no-start

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.

1. Fuel delivery: pump module, hard start and stall cluster Occasional · 19 complaints
2. Cam/crank position sensors and cam phaser actuator Occasional · 13 complaints

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.

1 Fuel delivery: pump module, hard start and stall cluster

aggregated How widespread: Occasional 19 NHTSA owner complaints match it, out of 459 checked

How it shows up

• long crank / hard start, worse low-fuel

Its other signs

• stalls under load or at idle
• fuel pressure below spec

How to tell it apart

• log fuel pressure at rail vs spec under load and prime
• verify voltage/ground at the module connector
• replace the module per the tank variant; new o-ring and lock ring

Usual fix

fuel pump module replacement (tank variant matters) with new o-ring

Root cause, parts and sources →

2 Cam/crank position sensors and cam phaser actuator

aggregated How widespread: Occasional 13 NHTSA owner complaints match it, out of 459 checked

How it shows up

• cam/crank correlation DTCs, hard start or stall
• intermittent no-start that returns

Its other signs

• phaser/limp codes on the VVT side

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)

Stalls or dies while drivingLoss of power, limp mode or derateLosing coolantMisfire, rough idle, hesitation or surging

Everything on the ProMaster 3.6 (gas)Its recalls and bulletins

Order: how widespread each failure is in its record (near-universal, very common, common, occasional, rare), then the number of NHTSA owner complaints that match its keywords. Complaint counts are keyword matches, not a manual review of each complaint. A symptom listed here means the failure is documented with that sign; it is not a diagnosis of your truck. Tiers: verified, aggregated, contested, data-gap. How we tier and source facts.