Hello I have a problem high idle. Durametric show me P0174 error code. I know what its mean. that's what I did 1. cleaned the MAF 2. сleaned the throttle 3. checked the vacuum in the inlet oil (no all ok) 4. check the intake for leaks (use compressor) a little leak is in oil under the cover of the neck, If you remove the cover a huge leak, so it should be? I took a few photos that would have been more clear, please be advised that you can still try to check

 

It is normal to get air out of the oil filler cap. I've tried to use the starter to crank the engine to get the intake valves to be all closed but was unable.... I always had a little bit of air coming to the oil filler cap....So far you did well to found your problem. You must have a leak somewhere especially in the multiple sense lines on top of the engine....

 

Thanks jpflip
I will try to have explained to the problem when I start a cold engine rotation slightly higher after a couple of minutes, they drop to the normal 900 RPM, about 5 minutes start to rotate up to 1050 RPM if I run a/c, they are reduced to 900 RPM. If you drive about 10 minutes at a speed of 150-170 kilometers per hour, a/c rotation is 1050 RPM 1400 RPM without. As for the leaks, I carefully listened to no more leaks there. Maybe I should replace the MAF? Although I had checked with a voltmeter for not running the engine 1V, 1.4V when running.
I also did adjustment throttle.
Thanks, I have no more ideas -)

 

check with durametric throttlepotentiometer/voltage ect. with lifetime data..may be you can analyse a failure at this point...

 

You have to do a pressure test from the turbos... same idea ... but you block one off and pressure the other.... try to get 15 to 20 psi... Im guessing its a vacuum leak... a bunch of lines run in back left side of TB....
I was in Kiev recently... wish I knew I would help you...

 

Thanks MARKSKI@911tuning-)
I even tried 50 psi, so my unit pulled out, thankfully managed to remove the head -). A couple of days has come my durametric, and I can take off the throttle and the show data.

 

I got my durametrik and got the logs please have a look and advise (from string 820 im switch on A/C). There is also an error p0507. http://www.sendspace.com/file/f5ieqc

 

Problem is solved by replacing the MAF.
Thank all for help.