ok heres the prob i drive at like45+ for aany distance then put in my cluctch as i come to a stop and the rpms dropp down to like 400 and the check engine light comes on snd it runs ruff then i rev it up real quick to 4500 rpms and the check engine light goes off and it runs right whats the prob ive already changed my o2 sensor and the mass air flow sensor

 

oh this is on a 1990 mazda mx6 2.2L non turbo 5 speed manual\

 

I thought this was a ROTARY Forum..................or am i in the wrong place? j/k...sorry cant help you. good luck