MY04 GT Auto Liberty idle rev fluctuactions under load.

Posts specific to the 2.0 litre Turbo engine

MY04 GT Auto Liberty idle rev fluctuactions under load.

Postby kickeres » Sat Nov 29, 2014 4:33 pm

Hi guys, been reading about more severe idle problems, and this one is just annoying, not stopping me from driving.

I noticed it when it was raining one day, i had the AC on, Lights on, in drive stopped at the traffic lights with it in drive. The vaccum pressure fluctuates and you can hear the revs drop and rise.

Since then i have been able to replicate the issue (in the last week or two) by turning on the AC, Lights and put it in drive, with the breaks on.

https://www.youtube.com/watch?v=nCOZdFTUd3g&list=UUd7XnR9B9w00m9sV72xp-Yg

I have read a few topics on here that talk about AVCS Solinoids and their filter's, so i have checked and removed them now. But it still fluctuates up and down. There were no bits of the filters/screens missing, so i dont think the solinoids are full of crap. I have done a MAF clean, and upper cylinder clean, no result.

Recent (a month ago) services are as follows -


Oil, Filter,
transmission fluid & filter
Diff oils, front and back
New Plugs - iridium
Air filter

Got me stumped!

MY04 GT Liberty, 130,000 KM, Auto 5 Speed

Kyle.
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Car: GT Liberty 2004 MY04 Premium Pack 2L
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