hi im new to this site and looking for advice for a problem im having. I have a 99 mustang gt with 80000 miles. When I start the car cold it starts and idles fine but say i stop after the car has warmed up and go to start it again the rpms drop really low and it almost dies but then continues to idle fine. I have replaced the iac valve but it did nothing any suggestions......

 

Clean the MAF element.Use spray cleaners such as electrical contact cleaner or a cotton swab with rubbing alcohol.Be careful the element is very fragile.

 

how sure are you this is the problem ? couldnt it be lots of things should i also clean throttle body replace spark plugs replace fuel filter ect or does the maf have a direct connection to the problem (starting warm) thanks

 

i have a similar issue, also get a rough idle when its really hot.

i think i need an o2 replaced. i dunno, it angers me cause i get no cel.

might have to take it to a good mechanic and get it diagnosed.