Chart 1

Starting Concerns: Stall After Start
Stalls/Quits: Idle, Acceleration, Cruise
Runs Rough
Misses
Buck/Jerk
Hesitation/Stumble
Surge
Unique Idle concerns: Rolling Idle

NOTE: For stalls on passenger car applications, the engine may stall if left running while 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 - GASOLINE MODELS unless noted)
Check the following PIDs: DPFEGR (if equipped) (hot idle value within 0.15 volt of KOEO value) LONGFT1/LONGFT2 (value between -20 and +20%) VPWR (value between 10.5 and 17.0 volts, and within 0.5 volt of battery voltage)	DPFEGR PID value not within 0.15 volt of KOEO value: For vehicles equipped with ESM EGR: GO to H: Exhaust Gas Recirculation System Module (ESM) STEP HH27. All others: GO to E: Exhaust Gas Recirculation (EGR) Systems STEP HE57.
	LONGFT1/LONGFT2 value low (-): Continue diagnosis. Concentrate checks in areas that would cause the engine to run rich.
	LONGFT1/LONGFT2 value high (+): Continue diagnosis. Concentrate checks in areas that would cause the engine to run lean.
	VPWR not between 10.5 and 17.0 volts: REFER to CHARGING SYSTEM - GENERAL INFORMATION .
	VPWR between 10.5 and 17.0 volts, but not within 0.5 volt of battery voltage: CHECK B+ supply to PCM power relay. CHECK VPWR circuit between PCM and PCM power relay. CHECK PWR GND circuits.
For vehicles that run rough at idle: With the KOEO, check the INJxF PIDs (the "x" indicates the injector number; there will be one INJxF PID for each engine cylinder). All INJxF PIDs must indicate no fault (or NO).	INJxF PID(s) indicate a fault (an injector circuit fault is indicated):
	Ford GT: GO to L: Dual-Injection Fuel Delivery System STEP HL3.
	All others: GO to H: Fuel Control STEP H34.
Mass Air Flow (MAF) Sensor	GO to C: Mass Air Flow (MAF) Sensor STEP DC26.
Secondary Ignition System	For vehicles equipped with a coil pack ignition system, GO to PINPOINT TEST JC . For all others, GO to PINPOINT TEST JB .
Fuel Delivery System	GO to PINPOINT TEST HC .
Exhaust System	GO to F: Catalyst Efficiency Monitor and Exhaust Systems STEP HF8.
PCV System	GO to PINPOINT TEST HG .
EVAP System	GO to X: Evaporative Emission (EVAP) Monitor and System STEP HX14
Automatic Transmission	REFER to AUTOMATIC TRANSMISSION/TRANSAXLE .
Base Engine	REFER to ENGINE .
Applications without electronic throttle control: Intake Air System	GO to PINPOINT TEST HU .
Applications with A/C pressure sensor (3-wire sensor): A/C pressure (ACP) sensor input to PCM	GO to S: Air Conditioning Pressure (ACP) Sensor STEP DS18.
Additional Testing	GO to PINPOINT TEST Z .
Additional Checks:	REFER to the applicable service information article.
NOTE: Some applications have a PID that indicates whether the PCM is reducing torque (TQ_CNTL) (#095E b0), and if so, why the torque is being reduced (#095Eb1- 13) (0 equals No torque reduction requested; 1 equals Torque Truncation. Cuts fuel to protect when line pressure falls to minimum limit; 2 equals Traction Control Event. Cuts fuel/spark for traction control; 3 equals Vehicle Speed Limit. Cuts fuel).
Correct the PCM vehicle identification (VID) block information (refer to FLASH ELECTRICALLY ERASABLE PROGRAMMABLE READ ONLY MEMORY (EEPROM) Be aware of engine RPM/speed limiting functions of the PCM (look for incorrect high vehicle speed signal from ABS, VSS, or OSS). Verify the fuel cap is properly tightened and not physically damaged. Drivelines Manual transmission/clutch Charging system Traction control system (if equipped) A/C system (for surge with A/C on) Speed control system (for surge with speed control on) A/C compressor diode, if equipped (for rolling idle)