Possible Vanos issue.

[rmoconnor41]

As part of the cold idle investigation I have noticed a ticking sound in or around the Vanos.

The Vanos had a rebuild over a year ago.

if not the Vanos itself what could be clicking regularly every few seconds?

Thanks

 

[elevensies]

belt pully tensioner

 

[Duncodin]

Could it be a vanos solonoid clicking? You say it has a rough idle. Is something trying to adjust valve timing to idle correctly. Wrong signals ot bad solonoid or something?

 

[Lee]

What was the outcome with Iridium Rich ?

Did they have the car cold to look at ?

If you can hear a rattle around the vanos as said above it might very well be one of the solenoids getting sticky.

 

[AntStark]

What was the outcome with Iridium Rich ?

Did they have the car cold to look at ?

If you can hear a rattle around the vanos as said above it might very well be one of the solenoids getting sticky.

I could feel the solenoid (top one) clicking today @Lee ..it’s very audible. Looks easy to get it off but is it at all serviceable/cleanable or is a new one needed ?

 

[Lee]

I could feel the solenoid (top one) clicking today @Lee ..it’s very audible. Looks easy to get it off but is it at all serviceable/cleanable or is a new one needed ?

Best to replace, they fail internally.

Not sure on their cost. Ones easy to reach with a 32mm spanner the other needs a crows foot attachment.

 

[rmoconnor41]

What was the outcome with Iridium Rich ?

Did they have the car cold to look at ?

If you can hear a rattle around the vanos as said above it might very well be one of the solenoids getting sticky.

Well the PCV change cured this

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[rmoconnor41]

Best to replace, they fail internally.

Not sure on their cost. Ones easy to reach with a 32mm spanner the other needs a crows foot attachment.

Iridium said it only idled slightly rough that they thought would settle. Unfortunately it actually idles like this.

- YouTube

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[rmoconnor41]

What was the outcome with Iridium Rich ?

Did they have the car cold to look at ?

If you can hear a rattle around the vanos as said above it might very well be one of the solenoids getting sticky.

When I look at OEM the solenoid itself is a sealed unit with the piston two separate parts. Is it the sealed unit piece only that needs replacing?

 

[rmoconnor41]

What was the outcome with Iridium Rich ?

Did they have the car cold to look at ?

If you can hear a rattle around the vanos as said above it might very well be one of the solenoids getting sticky.

Well I have a new fuel filter, crankcase sensor and PVC which the car needed but it didn’t resolve the rough idle.

 

[rmoconnor41]

Best to replace, they fail internally.

Not sure on their cost. Ones easy to reach with a 32mm spanner the other needs a crows foot attachment.

BMW want £503.23 for one Vanos Solenoid

 

[AntStark]

Febi one on eBay for £46.50
Part 175323 ..says it fits 2.8 Z3

 

[rmoconnor41]

Febi one on eBay for £46.50
Part 175323 ..says it fits 2.8 Z3

Damn. AUTODOC one ordered at £60 plus pp