Hey we got a 4 door lx automatic and sometime when you start it cold, the rpm's go to about 1600 and then drop to about 100 and it seems like its going to stall. After being at 100 for a second it goes back up to normal. Any clue or advice?
btw 160k on car

 

clean the idle air control valve (iacv) and see what that does,.....good luck

 

thanks bro i'll check it out