How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Ron Your Own Question
Ron
Ron, ASE Certified Technician
Category: Ford
Satisfied Customers: 23821
Experience:  23 years with Ford specializing in drivability and electrical and AC. Ford certs and ASE Certs
7276279
Type Your Ford Question Here...
Ron is online now
A new question is answered every 9 seconds

Ford f 150 5.4 triton 3 valve 4x4: Getting reading p0203/p0171

Customer Question

Getting reading p0203/p0171 , replace fuel ejector no help ,, reading ejector open-cylinder /bank1-system too lean ?
Submitted: 2 years ago.
Category: Ford
Expert:  HDGENE replied 2 years ago.
Hello, you replaced the number 3 injector, third one back on the passenger side of the engine? Do you have injector pulse to the injector while checking with a noid lamp? Do you have the same codes stored after the injector replacement?
Customer: replied 2 years ago.
Yes I ck good pulses and yes we replace fuel ejector on passenger side
Expert:  HDGENE replied 2 years ago.
Same codes? Misfiring on same cylinder?
Customer: replied 2 years ago.
Yes
Customer: replied 2 years ago.
No
Expert:  HDGENE replied 2 years ago.
Ok so has same P0203 code and it is not misfiring on any cylinders now, just a check engine light on?
Customer: replied 2 years ago.
No it misfires and eat fuel , engine run ruff and engine light flashing
Expert:  HDGENE replied 2 years ago.
Ok well if the light is flashing its setting a code but you said no more P0203,So which cylinder is misfiring now, same one or different one(s)? how many miles on this engine and did you change the spark plugs ever?