Revs Jumping Up And Down When Cold

[4AL2NV]

Hi ever since ive owned my skyline the revs jump up and down when its cold on idal. it sounds really weird like im putting my foot on the accelerator and taking it off really fast. i have a power fc if it makes a difference. why is this happening? wat could it be? has this happened 2 neone else?

[paulr33]

hi daniel

have a read of the powerfc faq (in my sig) it covers many idle related issues

the correct way to fix is to probably clear the tune and reset it, and redo the idle learn proceudre

this will erase the tune so make sure that someone with datalogit copies it for you first

[G0DZLR]

try this:

http://www.skylinesaustralia.com/forums/Di...mp;hl=aac+valve

may not fix it but its good to do it anyway. il get round to doing mine when i have the time to pull it al aprt etc

i have the same problem too..especially if i reverse out of my driveway (moderate load, as its on an incline) and then let it sit.