- Joined
- Feb 18, 2026
- Messages
- 2
- Points
- 1
- City
- riverside
- State - Country
- CA - USA
- Vehicle Year
- 1999
- Vehicle
- Ford Ranger
- Drive
- 2WD
- Engine
- 2.5 (4 Cylinder)
- Transmission
- Automatic
Ive been researching here, other sites, chatgpt everything I can think of and i cant figure this out.
1999 Ranger 2.5L 126k miles , besides the check engine light i get this bogg of the engine when shifting into drive and starting off almost everytime. this is everything I did in order of circumstances to where I am now currently.
check engine light got a p0401 then proceeded to :
- new IAC valve - still same code
-new upstream o2 Sensor - nothing
-new DPFE sensor - nothing
- new EGR Valve - nothing
-new EGR pipe - nothing
- Hired a mechanic to come take apart and clean the enitre throttle body and intake manifold ( it wasn't clogged at all like ive seen in some cases ) - still got the same light 25 ish miles later after clearing code
- new evr solenoid - after this clearing of the check engine my p0401 went away and just got p1401 now.
- new hoses for the DPFE sensor ( theyre on the correct ports 100% sure ) - nothing
- bought a multimeter to check the wires that plug into the egr valve and they all checked out proper voltages aand after driving im getting both codes not stored after clearing them.
now this is where I am lost idk what else to do /try. I really appreciate some insight.
1999 Ranger 2.5L 126k miles , besides the check engine light i get this bogg of the engine when shifting into drive and starting off almost everytime. this is everything I did in order of circumstances to where I am now currently.
check engine light got a p0401 then proceeded to :
- new IAC valve - still same code
-new upstream o2 Sensor - nothing
-new DPFE sensor - nothing
- new EGR Valve - nothing
-new EGR pipe - nothing
- Hired a mechanic to come take apart and clean the enitre throttle body and intake manifold ( it wasn't clogged at all like ive seen in some cases ) - still got the same light 25 ish miles later after clearing code
- new evr solenoid - after this clearing of the check engine my p0401 went away and just got p1401 now.
- new hoses for the DPFE sensor ( theyre on the correct ports 100% sure ) - nothing
- bought a multimeter to check the wires that plug into the egr valve and they all checked out proper voltages aand after driving im getting both codes not stored after clearing them.
now this is where I am lost idk what else to do /try. I really appreciate some insight.
