Oct. 13 2016
Oct. 13 2016

Vehicle: 2004 Ford Truck Escape 2WD V6-3.0L VIN 1

Mileage: 155,009

Problem: The vehicle was brought in because the engine intermittently hesitated and bogged on acceleration. The MIL (Malfunction Indicator Light) was on. The problem had occurred only three times before.

Details: The technician retrieved DTCs P0190 – fuel rail pressure sensor circuit, P2196 – B1S1 O2 sensor stuck rich and P2198 – B2S2 O2 sensor stuck rich. After reviewing the live scan tool data, the tech called the Tech-Assist team. The Tech-Assist consultant suggested checking the EVAP (evaporative) system for fuel intrusion in the evaporative canister or a restricted vent valve. He also recommended comparing the mechanical fuel pressure gauge readings with the scan tool’s fuel pressure sensor PID.

Confirmed Repair: The technician checked the EVAP system and confirmed that there was no fuel intrusion in the evaporative canister and the vent valve was operating correctly. When he could duplicate the bogging problem, he noticed that the manual fuel pressure gauge read 100+ psi but the scan tool’s fuel pressure sensor PID read only 30 psi. The technician replaced the fuel rail pressure sensor and the problem was resolved.

The ALLDATA Tech-Assist team fields cases like this every day. See how Tech-Assist can help your shop save time and money with on-call diagnostic support from ASE-certified Master Technicians. More Tech Tips 

Not an ALLDATA customer? For access to this valuable experience-based repair data and reliable OEM information, start a free trial today.

If you would like to read more articles like this one please subscribe to ALLDATA News.

Sign up for ALLDATA News