Vaico vanos solenoid n52

Schmitz · 06-19-2020, 08:02 AM

I'm at 84k miles and from what I've read it's about time to replace these. Does anyone have any experience with these?

I'm getting a rough idle at warm start with no codes and have absolutely no idea why, so hoping this might help. But either way, they're recommended to replace at 70k from what I've read.

CDirks · 06-19-2020, 08:15 AM

I've heard of them being cleaned and swapped at regular intervals, but I don't believe Vanos solenoids fall under the umbrella of preventative maintenance. I would suggest cleaning them if that hasn't happened under your ownership

hassmaschine · 06-19-2020, 09:24 AM

Why would they need replaced at 70k miles? By who? Mine are original at 156,000 - they still work just fine.

Schmitz · 06-19-2020, 09:26 AM

Quote:

Originally Posted by CDirks

I've heard of them being cleaned and swapped at regular intervals, but I don't believe Vanos solenoids fall under the umbrella of preventative maintenance. I would suggest cleaning them if that hasn't happened under your ownership

I've cleaned them twice. I just read that they would need replacement at around 70k. Fair enough.

Schmitz · 06-19-2020, 09:28 AM

Quote:

Originally Posted by hassmaschine

Why would they need replaced at 84k miles? Mine are original at 156,000 - they still work just fine.

Because I read they needed replacement...

lookalikehuuh · 06-19-2020, 09:30 AM

My original Vanos selenoids made it to 210K miles, I replaced them because I was chasing down a rough idle when warm which turned out to be coils, so technically they are still good with over 210K miles on them.

Schmitz · 06-19-2020, 09:36 AM

Quote:

Originally Posted by lookalikehuuh

My original Vanos selenoids made it to 210K miles, I replaced them because I was chasing down a rough idle when warm which turned out to be coils, so technically they are still good with over 210K miles on them.

Interesting. I have a rough idle on warm start for about 5-10 seconds. Only in warm start after its been sitting for 20 minutes to an hour or two.

I replaced the coils but they didn't help.

lookalikehuuh · 06-19-2020, 09:39 AM

Is the "rough" idle on happening while the system is checking all of the bulb checks?

Schmitz · 06-19-2020, 09:49 AM

Quote:

Originally Posted by lookalikehuuh

Is the "rough" idle on happening while the system is checking all of the bulb checks?

So, it turns on like normal, then a second or two later it starts fluctuating between 6-700 rpms for 5-10 seconds. I'll take a video today.

gjm120 · 06-19-2020, 10:57 AM

Quote:

Originally Posted by Schmitz

So, it turns on like normal, then a second or two later it starts fluctuating between 6-700 rpms for 5-10 seconds. I'll take a video today.

Same thing on my N52 after it sits from 1/2 to 2 hours.

nsjames · 06-19-2020, 01:31 PM

my vanos solenoids are original at 160K miles without issue.

my rough idle was caused by ESS with oil in it.

check the ess connector.

Schmitz · 06-19-2020, 02:08 PM

Quote:

Originally Posted by nsjames

my vanos solenoids are original at 160K miles without issue.

my rough idle was caused by ESS with oil in it.

check the ess connector.

Thanks, I will certainly check that out.

Guess I'll leave the solenoids alone.

gjm120 · 06-19-2020, 02:59 PM

Quote:

Originally Posted by nsjames

my vanos solenoids are original at 160K miles without issue.

my rough idle was caused by ESS with oil in it.

check the ess connector.

Will the car throw a code if the ESS is not working correctly?

nsjames · 06-19-2020, 04:13 PM

Quote:

Originally Posted by gjm120

Will the car throw a code if the ESS is not working correctly?

mine did not. even when it caused no starts when it was cold.

car just didn't work. found oil in the connector when I started looking for reasons.

Turboey · 06-21-2020, 09:22 AM

Wheres the crankcase suction at? Sounds like the start of a failing ccvv

Schmitz · 06-21-2020, 09:25 AM

Quote:

Originally Posted by Turboey

Wheres the crankcase suction at? Sounds like the start of a failing ccvv

Interesting, shouldn't I have some oil loss problems though?

meikster · 06-21-2020, 10:17 AM

have had the same symptoms for a while, although i have changed ESS and vanos

Schmitz · 06-21-2020, 12:30 PM

Quote:

Originally Posted by meikster

have had the same symptoms for a while, although i have changed ESS and vanos

Yea I've been about a year... Going to see what happens when I disconnect maf.

Turboey · 06-22-2020, 06:55 PM

Quote:

Originally Posted by Schmitz

Interesting, shouldn't I have some oil loss problems though?

Not necessarily; its more like oil vapors than anything that will cause erratic mixture adaption. Any faults in the dme?

Schmitz · 06-22-2020, 07:08 PM

Quote:

Originally Posted by Turboey

Quote:

Originally Posted by Schmitz

Interesting, shouldn't I have some oil loss problems though?

Not necessarily; its more like oil vapors than anything that will cause erratic mixture adaption. Any faults in the dme?

There haven't been. I'll scan with carly tomorrow.

Schmitz · 06-23-2020, 08:10 PM

I scanned with carly and no codes. I took out all the spark plugs, checked the gap (.043), torqued to 18ft/pds and cleaned the maf today. We shall see.

dan_E90 · 12-19-2020, 05:18 PM

You figure it out?

06-19-2020, 08:02 AM	#1
Schmitz Lieutenant 241 Rep 494 Posts Drives: e90 328i Join Date: Sep 2017 Location: Rhode Island iTrader: (0)	Vaico vanos solenoid n52 I'm at 84k miles and from what I've read it's about time to replace these. Does anyone have any experience with these? I'm getting a rough idle at warm start with no codes and have absolutely no idea why, so hoping this might help. But either way, they're recommended to replace at 70k from what I've read.
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06-19-2020, 08:15 AM	#2
CDirks Private First Class 135 Rep 173 Posts Drives: 2011 E91 328xi Join Date: Feb 2020 Location: Boston iTrader: (0)	I've heard of them being cleaned and swapped at regular intervals, but I don't believe Vanos solenoids fall under the umbrella of preventative maintenance. I would suggest cleaning them if that hasn't happened under your ownership
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06-19-2020, 09:24 AM	#3
hassmaschine Major General 3973 Rep 7,215 Posts Drives: "NBO" 330i Join Date: Jun 2014 Location: earth iTrader: (0)	Why would they need replaced at 70k miles? By who? Mine are original at 156,000 - they still work just fine. Last edited by hassmaschine; 06-19-2020 at 09:32 AM..
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06-19-2020, 09:30 AM	#6
lookalikehuuh Major 700 Rep 1,229 Posts Drives: 2006 330i, 2007 335i Join Date: Sep 2014 Location: San Diego, CA iTrader: (0)	My original Vanos selenoids made it to 210K miles, I replaced them because I was chasing down a rough idle when warm which turned out to be coils, so technically they are still good with over 210K miles on them.
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06-19-2020, 09:39 AM	#8
lookalikehuuh Major 700 Rep 1,229 Posts Drives: 2006 330i, 2007 335i Join Date: Sep 2014 Location: San Diego, CA iTrader: (0)	Is the "rough" idle on happening while the system is checking all of the bulb checks?
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06-19-2020, 01:31 PM	#11
nsjames Brigadier General 2442 Rep 4,330 Posts Drives: 08 328xi Touring Join Date: May 2017 Location: ohio iTrader: (0)	my vanos solenoids are original at 160K miles without issue. my rough idle was caused by ESS with oil in it. check the ess connector.
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06-21-2020, 09:22 AM	#15
Turboey 15yr ase/bmw certified indy tech 7 Rep 34 Posts Drives: e30, e36, e34it, e91 Join Date: Mar 2020 Location: Ft. Lauderdale iTrader: (0)	Wheres the crankcase suction at? Sounds like the start of a failing ccvv
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06-21-2020, 10:17 AM	#17
meikster New Member 5 Rep 25 Posts Drives: 2006 325xi Join Date: Jan 2019 Location: 204 iTrader: (0)	have had the same symptoms for a while, although i have changed ESS and vanos
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06-23-2020, 08:10 PM	#21
Schmitz Lieutenant 241 Rep 494 Posts Drives: e90 328i Join Date: Sep 2017 Location: Rhode Island iTrader: (0)	I scanned with carly and no codes. I took out all the spark plugs, checked the gap (.043), torqued to 18ft/pds and cleaned the maf today. We shall see.
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12-19-2020, 05:18 PM	#22
dan_E90 SG E90 9 Rep 14 Posts Drives: 2006 BMW 325i Join Date: Jan 2018 Location: Chicago,Illinois iTrader: (0)	You figure it out?
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