This is on my 4 banger with 5 speed 8 plug head 92 coupe...Here lately after the car warms up when i come to a stop in nutrual,the RPM's drops low almost diesing low then comes back to normal.Now every so often it will die.Weather it dies or stays running i get a puff of smoke.It dosent smoke while driving or on cold or warm starts.I will pull the codes today as see what i get?I am trying the code reader as well as doing them myself with the jumper wire deal.Anyone have an idea?peace
john
john