1998 Dodge Avenger P0400 Code Random cylinder misfire

hi, I think you mean p0300, random misfire. there are a few things that can cause this, a bad intake manifold gasket , egr valve, catalytic converter, even several bad injectors can cause this too

scan and reading misfire misfire all plug 97 dodge avenger 2.4l 4cyl.. change coil ,plugs and wire,clean throttle body same problem all the time please help

nice car, ok, you've covered all that. now you should check a couple of simple things, and all these cause a misfire, check/change air filter, pcv valve, and intake manifold gasket,/vacuum leaks.

air filter new .let you no from your answer thanks

[quote:120f341b57="speedproshop"]air filter new .let you no from your answer thanks[/quote:120f341b57]

maybe pcv when change plugs i add 2 with bit of oil on them

i did lots of stuff spread around intake no leak
change sencor at and of throttle body no change
change one vacum pipe was crack no change
plug air filter coil wire all new added injector clener to gas and throttle body spray can in again no change
again random misfire ,clean every part

what is left to do

[quote:c6198c1836="speedproshop"]i did lots of stuff spread around intake no leak
change sencor at and of throttle body no change
change one vacum pipe was crack no change
plug air filter coil wire all new added injector clener to gas and throttle body spray can in again no change
again random misfire ,clean every part

what is left to do[/quote:c6198c1836]

forgot change pcv ok

[quote:5d592285ae="speedproshop"][quote:5d592285ae="speedproshop"]i did lots of stuff spread around intake no leak
change sencor at and of throttle body no change
change one vacum pipe was crack no change
plug air filter coil wire all new added injector clener to gas and throttle body spray can in again no change
again random misfire ,clean every part

what is left to do[/quote:5d592285ae]

forgot change pcv ok[/quote:5d592285ae]

only thing left to do is change gas filter and check timing