Do I need to replace the O2 sensor or catalytic converter?
What is your question?
Truck hesitates to accelerate. Check engine light is on. When she hesitates, I let off the gas and slowly push the gas pedal down. There's no difference in response if I am gentle or kick it to the floor. No difference if the engine's cool or warm.
I replaced the fuel filter which helped for less than a day.
Had diagnostics run by certified technician.Codes P0153 & P0430 identified.
P0153 listed as 02 Bank2.
No manifold leak identified. Trans cooler/lines minimal leak.
Truck failed emissions last year and I didn't have acceleration issues then. Another technician claimed the catalytic converter was clogged, he "flushed" it and it passed emissions.
I also added a fuel additive in the tank as recommended by technician. They said it would clean the system for an older truck.
My truck has 79,000 miles on it
Was hardly driven by dealership before I bought it 2 years ago.
Do I replace the O2 sensor or have them check something else?
What makes this problem better or worse?
Haven't found anything yet
How long has your 1997 Ford Explorer had this problem?
RepairPal Certified shops can diagnose and repair your 1997 Ford Explorer. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.
Highly recommend concentrating on FUEL PRESSURE - - FUEL DELIVERY as next step..
Fuel pressure can be monitored during test drive to observe possible insufficient pressure readings.
Good luck!
Repair this issue first - clear codes and drive vehicle.
P0153 Ford Possible Causes:
Faulty Front Heated Oxygen Sensor Bank 2
Front Heated Oxygen Sensor Bank 2 harness is open or shorted
Front Heated Oxygen Sensor Bank 2 circuit poor electrical connection
Inappropriate fuel pressure
Faulty fuel injectors
Intake air leaks
Exhaust gas leaks
It shouldn’t be a difficult task for ‘qualified personnel’ to accurately diagnose these concerns!
Repair this issue first - clear codes and drive vehicle. P0153 Ford Possible Causes: Faulty Front Heated Oxygen Sensor Bank 2 Front Heated Oxygen Sensor Bank 2 harness is open or shorted Front Heated Oxygen Sensor Bank 2 circuit poor electrical connection Inappropriate fuel pressure Faulty fuel injectors Intake air leaks Exhaust gas leaks It shouldn’t be a difficult task for ‘qualified personnel’ to accurately diagnose these concerns!