Hey guys, I have both these codes showing suddenly. I already checked and cleaned MAF sensor. I know the fuel pressure is fine, checked. So as I continue.. I know o2 sensor could be bad or EGR valve or DPFE sensor. But also vacuum leaks. I can not for the life of me find a diagram of ther vacuum system for a 2003 ford ranger 2.3 liter.. does anyone have one? I am thinking I will replace vacuum lines before I get into the rest unless anyone here has some great advice as to what it might be? These two codes came suddenly, and even if I clear them out, 2 starts of the engine and they are right back

 

What is the fuel pressure"
The exact number running and engine off?


How many miles on the engine?
O2 sensor needs to be changed every 100-125k miles, they run out of chemicals, same as batteries do
If you don't know if its been changed then change it before going farther

If you have a vacuum leak engine would be idling much higher than usual, is that happening?

EGR and DPFE have their own codes, full basic code list here: https://www.therangerstation.com/tec...II_codes.shtml

The codes the computer DOES NOT USE are as important as the ones it did use/choose

A Lean code does not mean the engine is running Lean or was ever running Lean
The codes mean the computer's air/fuel mix calculations were Lean so the computer is having to add more than 15% more fuel than calculated, so computer sets a code and gives the driver a "heads up" that its calculations are off

 

Hey I am getting a much higher idle when I first start the vehicle, it lasts about a minute then settles down??

 

That's what it should do