R33 Gtst Unusual Rev After About 10 Min Driving

[Muff]

hay guys i drive my gtst fro about 10 min to work and while im on the high way driving it jumps up and down in the revs all of a sudden. pull over turn the car off.. back on after 5 min its fine. 10 min later.. same.....any ideas.......

got no problems with the aac or iac, check and cleaned that already. changed the plugs. im gonna run some injector cleaner through it and give the afm a clean, any other ideas?????? im thinking tps or crank angle sensor.,,,,,,,, but i havent checked them yet....

could the o2's be giving me grief?????

thanks

[Moodles2]

O2 sensors shouldn't cause that, sounds like a loose TPS to me

[Muff]

hay. found out that my brother in law put 91 octane fuel in for a couple of months while i was overseas......

i ran some injector cleaner, and reset the ecu runs like a dream......