Mazda 6 Forums banner
1 - 4 of 4 Posts

·
Registered
Joined
·
3 Posts
Discussion Starter · #1 ·
Mazda 6 2006 manual transmission


Symptoms

Delayed Rough idle (rpms go up and down constantly after a few seconds), engine hesitation and hard buckling/jerking in second gear, burning rich. Most recently, the gas pump nozzle was shutting off during filling (have not been back to fill up)


CEL CODES

Originally had two computer faults: P0401 - EGR valve insufficient flow and P0138 - downstream oxygen sensor high voltage (possible linked to severe exhaust leak). Exaust leaked fixed and codes went away.

NO OTHER CHECK ENGINE LIGHTS.

The air fuel ratio fluctuates (reading from obd2: torque app) and i think the computer is erratically causing to much fuel to enter the engine.


Things that I've also changed based on forums research


The EGR valve

downstream oxygen sensor

spark plugs

ignition coils

map sensor

Air intake sensor

fuel pump

solenoid purge valve

Fuel injectors.


Issue still not fixed. Any ideas?
 

·
Registered
Joined
·
4,354 Posts
Have you checked for cracks in the intake accordion hose?

Sent from my SM-G960U using Tapatalk
 
1 - 4 of 4 Posts
Top