hello, i have an automatic1999 infiniti q45 and im having a bit of a problem with it. When i start the car up the RPM seems to be a little low when its on and parked, it reads about 800 rpm, but when i put it on reverse or drive it drops real low to almost 500 rpm and it feels like its gonna turn off. once i drive it around for a while it goes up a little bit, when im at a stop or a red light it reads about 700, and when i park it after driving it, it reads 800 but if i accelerate it its goes up to 900 and stays there, i wanna know what i can do and if thats the normal rpm for my car. i had the MAF sensor cleaned thinking that was gonna be it, but it didnt help. Would adjusting the RPM to 1000 help. i would appreciate your answers =)

It should run at around 800 to 1100 rpm. Your car has a part called the Idle Air Control Valve ( I.A.C.) that gets dirty from the soot that ethanol leaves behind. If you go to a local parts store and buy a can of Sea Foam injector cleaner and dump it in the gasoline it will break that stuff down and clean th part from the inside out. After you get that tank of gas through you will want to treat the next tank as well to make sure everything is nice and clean and then be sure to run a can through after every oil change or 3000 miles to keep your motor running as good as it can. Sea Foam has been around since 1936 and still has no equal. it will pay for itself in time too because it will save you money on fuel and the parts that end up going bad because they are dirty. Hope I have been helpful.

It should run at around 800 to 1100 rpm. Your car has a part called the Idle Air Control Valve ( I.A.C.) that gets dirty from the soot that ethanol leaves behind. If you go to a local parts store and buy a can of Sea Foam injector cleaner and dump it in the gasoline it will break that stuff down and clean th part from the inside out. After you get that tank of gas through you will want to treat the next tank as well to make sure everything is nice and clean and then be sure to run a can through after every oil change or 3000 miles to keep your motor running as good as it can. Sea Foam has been around since 1936 and still has no equal. it will pay for itself in time too because it will save you money on fuel and the parts that end up going bad because they are dirty. Hope I have been helpful.