Vanos solenoids || 3 way cure! Warm Idle, Highway cruise, low end response/tq - Page 3 - BMW M5 Forum and M6 Forums
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post #21 of 30 Old 28th May 2016, 01:46 PM
Racer14sl
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I plan to run a vanos test on my M5 in the near future, as I too have a mild warm idle fluctuation after restarting and a exhaust drone change at highway cruise. It's been doing this since I've owned the car, but really don't bother me. No codes or warnings, frequent oil changes, and runs great. If this is a result of not OK vanos solenoids, < 0.8v, how long have some of you continued driving under these conditions before replacing solenoids? I've read into a couple threads on here about these exact symptoms that members couldnt explain a reason for and many replies were that these symptoms are normal or have been going on with their E60 M5 since day one off showroom floor of for the past 50k + miles...
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post #22 of 30 Old 3rd June 2016, 12:27 AM
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Originally Posted by Racer14sl View Post
I plan to run a vanos test on my M5 in the near future, as I too have a mild warm idle fluctuation after restarting and a exhaust drone change at highway cruise. It's been doing this since I've owned the car, but really don't bother me. No codes or warnings, frequent oil changes, and runs great. If this is a result of not OK vanos solenoids, < 0.8v, how long have some of you continued driving under these conditions before replacing solenoids? I've read into a couple threads on here about these exact symptoms that members couldnt explain a reason for and many replies were that these symptoms are normal or have been going on with their E60 M5 since day one off showroom floor of for the past 50k + miles...
Bump...Surprised there have been no comments on this with all the VANOS testing that's been performed on the E60 M5 by members on here.
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post #23 of 30 Old 3rd June 2016, 03:27 AM
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"less than .8V". VANOS values under .6V fall into the Not Okay state.

According to INAPA my values are hovering around .6V. I have been experiencing a rough cold idle. Only seems to last approximately 10 - 15 seconds then quickly stabilizes. Warm idle seems fine. Also, I feel a loss in power at WOT - the S85 just doesn't feel as strong as it once did.

I plan to replace all four solenoids very soon.
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post #24 of 30 Old 3rd June 2016, 05:06 AM Thread Starter
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Originally Posted by Racer14sl View Post
Bump...Surprised there have been no comments on this with all the VANOS testing that's been performed on the E60 M5 by members on here.
There are alot of guys running and driving around with failed solenoids.. Most dont even know it.. Most dealers wont even test for them as failed ( 'NOT OK') solenoids wont throw codes.. I have been driving around for 3+ years and 15K miles with failed solenoids lol I do not see a issue or a problem with running around with failed solenoids, but a lack of low end response and tq, and in some cases when they are bad enough, they cause idle issues.. And correct as COORS mentioned, once the solenoids quality values fall under .60 will it show 'NOT OK'


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"less than .8V". VANOS values under .6V fall into the Not Okay state.

According to INAPA my values are hovering around .6V. I have been experiencing a rough cold idle. Only seems to last approximately 10 - 15 seconds then quickly stabilizes. Warm idle seems fine. Also, I feel a loss in power at WOT - the S85 just doesn't feel as strong as it once did.

I plan to replace all four solenoids very soon.
So they are testing 'OK' still?
Failing vanos dont seem to take away top end or HP it seems from what i have seen..Seems the main issues is low end response and tq, which the vanos system is mostly responsible for.
But a fresh set of plugs this engine loves.. Every 37K miles, or less if modded.. Also checking for codes is a good thing aswell, there can be shadow codes that can be pointing to a potential issue of some kind..

Last edited by 5soko; 3rd June 2016 at 05:07 AM.
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post #25 of 30 Old 3rd June 2016, 01:01 PM
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Originally Posted by 5soko View Post
There are alot of guys running and driving around with failed solenoids.. Most dont even know it.. Most dealers wont even test for them as failed ( 'NOT OK') solenoids wont throw codes.. I have been driving around for 3+ years and 15K miles with failed solenoids lol I do not see a issue or a problem with running around with failed solenoids, but a lack of low end response and tq, and in some cases when they are bad enough, they cause idle issues.. And correct as COORS mentioned, once the solenoids quality values fall under .60 will it show 'NOT OK'
OK. Thank you for the response, this is exactly what I was looking for. When I read up about "Failed Vanos Solenoids" The impression I get is that this is a serious problem and needs to be addressed immediately. I haven't checked mine yet, but If I find that I have some below 0.6V, I have no problems replacing when time allows. Sounds like a good off-season project (winter).
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post #26 of 30 Old 3rd June 2016, 01:03 PM
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Quote:
Originally Posted by Coors View Post
"less than .8V". VANOS values under .6V fall into the Not Okay state.

According to INAPA my values are hovering around .6V. I have been experiencing a rough cold idle. Only seems to last approximately 10 - 15 seconds then quickly stabilizes. Warm idle seems fine. Also, I feel a loss in power at WOT - the S85 just doesn't feel as strong as it once did.

I plan to replace all four solenoids very soon.
How many miles have you put on the vehicle since you have known about the solenoids being around 0.6V?
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post #27 of 30 Old 3rd June 2016, 05:07 PM
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I'm pretty sure my solenoids have failed. I'm experiencing rough idle when the engine is warm for about a minute then it's a song. Low end torque is gone (I got beat up last night by freakin infinity q5x something V8 awd) embarrassing. Lol
I'm replacing all 4 solenoids. Rod bearings and hp Vanos line (I noticed its leaking when I changed my oil last night)


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post #28 of 30 Old 5th June 2016, 04:24 PM
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5soko: thanks for the writeup... been having the exact same symptoms (no cruise control, low torque etc) - did the solonoids adaptation with Rheingold and since then car feels worse... anybody know how to reset/clear solonoid adaptation on Rheingold again? (for now before changing them)
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post #29 of 30 Old 17th June 2016, 11:17 PM
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Holy crap, I just looked up the prices and these things are going for 330 each, cheapest price... average closer to 370! WOW lol. Guess my low end torque is just going to have to suffer for now.
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post #30 of 30 Old 2nd July 2016, 08:08 PM Thread Starter
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My friends 2010 M6 with 54K miles on her has been experiencing the warm idle fluctuation and such...
His vanos solenoids were all 'NOT OK'
He since installed 4 new ones and his warm idle fluctuation is also gone now and car is running great.
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