Hi there, ive just bought a 96 wrx and im getting a weird idle problem , when your sitting still its fine when your driving its fine but when your sitting in traffic and move up a space the revs stick at around 2 to 2 1/2k for a couple of seconds before returning to normal, ive cleaned the idle control valve and it all moves freely etc, ive checked the tps thats fine, the maf seems fine i dont know what else to check any suggestion would be great,

thanks Ryan

 

i forgot to mention that when started from either hot or cold the revs go up to 2000rpm

 

sounds like a lot of subarus suffer with this, just sorted mine, maf sensor is the problem

 

is there anyway of testing the MAF sensor as the car has only done 20000miles and idles smooth