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So after run test of the vanos on Ista D I've got these results and iwould like to know what do they mean

(I did vanos test because my idle goes up and down 800-1000rpm only when my car / engine is cold)

I attach pictures

Thanks guys
 

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Take a look here

https://www.bimmerfest.com/forums/showthread.php?t=1155617

There are some links there under "Engine (General)" regarding the solenoid valve removal and replacement and what to look for, these things are usually pretty robust and a good clean sorts them out 9 times out of ten.

There's also this link from a few days ago with some info.

https://www.bimmerfest.com/forums/showthread.php?t=1306921

Exact procedures and placement may be slightly different for your M6 but the basic idea is all the same.

Edit: Here's the TIS for yours so it is slightly different however, the idea of cleaning and replacement of the o-rings is still the cheapest place to start on this problem.

https://www.newtis.info/tisv2/a/en/...ngine/11-36-variable-camshaft-control/4PNPIKw
https://www.newtis.info/tisv2/a/en/...ngine/11-36-variable-camshaft-control/Hgz1gmi

You might also get additional info from this forum which is dedicated to your M6 :thumbup:.

https://www.bimmerfest.com/forums/forumdisplay.php?f=113
 

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You need to start by removing the Vanos solenoids, & clean them when you get them out. There is a screen around the middle of the solenoid that could be clogged. I use WD-40 to clean & flush my valves. Go ahead & get new o-rings for each solenoid, There are 2 different size o-rings you will need. So get 4 of each size. While you have the connectors off of the solenoids, verify the voltage to each wire with the key in the 2nd position. You should get a 2.8 volts on one side, & 12 volts on the other side if the plug. Ground the VOM somewhere on the engine, & the red wire to each connector on each plug. Report back what you find, & we will help from there.

One of your items are stating current is bad to the solenoids, so this is the place to start. The car will not run correctly with Vanos problems.
 

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You need to start by removing the Vanos solenoids, & clean them when you get them out. There is a screen around the middle of the solenoid that could be clogged. I use WD-40 to clean & flush my valves. Go ahead & get new o-rings for each solenoid, There are 2 different size o-rings you will need. So get 4 of each size. While you have the connectors off of the solenoids, verify the voltage to each wire with the key in the 2nd position. You should get a 2.8 volts on one side, & 12 volts on the other side if the plug. Ground the VOM somewhere on the engine, & the red wire to each connector on each plug. Report back what you find, & we will help from there.

One of your items are stating current is bad to the solenoids, so this is the place to start. The car will not run correctly with Vanos problems.
Herb, his solenoid valves are slightly different to ours, it's 4 o-rings per valve so 16 in total, 12 of the smaller ones and 4 of the larger, that being said the TIS states if one of the small o-rings is damaged then it means a new valve, personally I'd still give the cleaning a go first.
Also the 12 volts on one side of the plug should be the same but I'm not sure he'll be looking for the 2.8 that we measured on our 645's :dunno:.

OP, make sure you mark the plugs for the exhaust and intake solenoids, don't mix them up :thumbup:.
 
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