Hey Guys,
I just bought a 32 skyline, and it was idling really bad. so I clean out the aac which made it better. i then realised i had left the aac plug, unpluged. so i plugged it back in and the revs jumped up to almost 2000rpm. i had played around with the tps first so i thought maybe i didnt put it at the right angle. so i thought id re-adjust it. it then dropped the revs down to 1500rpm buh wont go any lower. when i rev it, it tries to go to the normal idle rpm but it jumps back up to 1500. also when i gently hold the accel pedal... it jumps revs from high to low every 2 seconds.
please help, ive never worked on these cars before.