on my actron reader im have many codes HELP!!!!
431 warm up catalyst
po 421warm up catalyst
rpm below expected
i clean all the carbon out! my egr is working i done the test.
I thinking its my...
Im pulling my hair out about this. CANT ANYONE HELP ME!
i just replace the throttle body gasket ,spark plug and wire,alternator
egr vacuum sensor ,uppper intake gasket, valve covers, battery
the check engine light off but came back on :mecry2:
it has all the sign of my erg mess up like acting up...