when i rev my engine in park or n at about 2000 rpms the rpms bounce up and down between 1500 and 2000. i think i might have a bad MAF my car hasnt been running up to par lately and it seems like a bad MAF but the rev thing has been happening since i bought it. i bought it with 76000 and now it has 92000. im stumped. any help would be great. thanks

 

mine does the same also every now and then, i got a coil code a few weeks ago, but it did that before and im thinking its maf also.

 

yea, most likely it's MAF, but check your to see if you have intake/vacuum leaks. minor leaks could cause bad idle, though i think it'd usually drop and not raise. but always good to check anyway

 

it seems more like an electric prob the way it bounces up and down 1 second up 1 sec down 1 sec up 1 second down and so on. i guess ill buy a MAF and see what happens. i wanna do plugs and coils anyway also. i like to replace that stuff shortly after i buy a car so i know exactly where i stand on maint.