Chart 1

WARNING: This page is about a different variant/trim than selected.

Engine Runs Rough
Engine Misses
Vehicle Stalls/Quits: Idle, Acceleration, Cruise
Vehicle Buck/Jerk
Vehicle Hesitation/Stumble
Vehicle Surge
Unique Idle Concerns: Rolling Idle

NOTE: The engine may stall if left running while refueling, or it may restart if the key is not cycled to ACC or OFF position before refueling. Advise the customer to turn the engine off while refueling to avoid contamination or damage to the EVAP system.

SYSTEM/COMPONENT	REFERENCE (Pinpoint Test Unless Noted)
Check the following PIDs: LONGFT1 (value between -20 and +20) VPWR (value between 10.5 and 17.0 volts, and within 0.5 volts of battery voltage)	LONGFT1 value low (-): Continue diagnosis. Concentrate checks in areas that cause the engine to run rich. LONGFT1 value high (+): Continue diagnosis. Concentrate checks in areas that cause the engine to run lean. VPWR not between 10.5 and 17.0 volts: REFER to CHARGING SYSTEM - GENERAL INFORMATION - ESCAPE & MARINER . VPWR between 10.5 and 17.0 volts, but not within 0.5 of battery voltage: CHECK B(+) supply to the PCM power relay. CHECK the VPWR circuit between the PCM and the PCM power relay. CHECK the PWR GND circuits.
Mass Air Flow (MAF) Sensor	GO to Pinpoint Test DC .
Secondary Ignition System	GO to Pinpoint Test JB .
Fuel Delivery System	GO to Pinpoint Test HC .
Exhaust System	GO to Pinpoint Test HF .
PCV System	GO to Pinpoint Test HG .
EVAP System	CHECK for EVAP system blockages(engine stalls) or leaks (other symptoms)
Base Engine	REFER to ENGINE SYSTEM-GENERAL INFORMATION - ESCAPE & MARINER .
Intake Air System	GO to Pinpoint Test HU .
Additional Testing	GO to Pinpoint Test Z .
Additional Checks: Correct PCM vehicle identification (VID) block information. Refer to FLASH ELECTRICALLY ERASABLE PROGRAMMABLE READ ONLY MEMORY (EEPROM) . Be aware of the engine RPM/speed limiting functions of the PCM (look for incorrect high vehicle speed signal from ABS) Drivelines and electronically controlled continuously variable transaxle (CVT) A/C system (for surge with A/C on) Speed control system (for surge with speed control on)	REFER to the applicable repair information article.