Table 5

WARNING: This page is about a different car, the 2010 Mercury Mariner and 2010 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.

Lack/Loss of Power

NOTE: Verify the symptom is reported under normal driving conditions without excessive engine/vehicle load. Also, be aware of the engine RPM/speed limiting functions of the PCM.

LACK/LOSS OF POWER SYMPTOM TABLE

SYSTEM/COMPONENT	REFERENCE (Pinpoint Test unless noted)
Air Cleaner Element	Visual
Check the following PIDs: LONGFT1 (value between -20 and +20)	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.
Fuel Delivery System	GO to PINPOINT TEST HC .
Secondary Ignition System	GO to PINPOINT TEST JB .
Mass Air Flow (MAF) Sensor	GO to PINPOINT TEST DC .
Exhaust System	GO to PINPOINT TEST HF .
Variable Camshaft Timing (VCT) System	GO to PINPOINT TEST HK .
Base Engine	REFER to ENGINE SYSTEM - GENERAL INFORMATION .
Transaxle	REFER to AUTOMATIC TRANSAXLE/TRANSMISSION - 6F35 -- FUSION & MILAN , AUTOMATIC TRANSAXLE/TRANSMISSION - AISIN AW21 or AUTOMATIC TRANSAXLE/TRANSMISSION - ELECTRONICALLY CONTROLLED CONTINUOUSLY VARIABLE TRANSMISSION (ECVT) .
Motor Electronics Cooling System	REFER to TRANSAXLE/TRANSMISSION COOLING - HYBRID .
Brake System (brake drag or binding)	REFER to BRAKE SYSTEM - GENERAL INFORMATION , brakes drag.
Additional Testing	GO to PINPOINT TEST Z .
Additional Checks: Customer driving habits Correct PCM vehicle identification (VID) block information. Refer to FLASH ELECTRICALLY ERASABLE PROGRAMMABLE READ ONLY MEMORY (EEPROM) . Engine RPM/speed limiting functions of the PCM (look for an incorrect high vehicle speed signal from the ABS module).	Visual. REFER to the applicable article in the Workshop Manual.