Another Vanos solenoid question

[rmoconnor41]

Is it normal for the inlet Vanos solenoid to be warm to the touch as the car comes up to temperature whilst the exhaust solenoid is cool to the touch?
Thanks.

 

[bear2020]

Solenoids only get warm if they are stuck open or closed and that is true of every solenoid used. There should be no residual heat in them. Its the constant supply of electric to them that heats them up. We get it a lot on the solenoids we use in our hydraulic units for offshore. If you have a multi meter you could check the ohms if you get a really high reading or very low it could be faulty. I believe it should read between 10 - 12.5ohms but some say a healthy VANOS solenoid depending on the type can read between 10-60 ohms

 

[Lee]

Is it normal for the inlet Vanos solenoid to be warm to the touch as the car comes up to temperature whilst the exhaust solenoid is cool to the touch?
Thanks.

Could be onto something there. Could swap them round and see if the fault moves.

 

[rmoconnor41]

Solenoids only get warm if they are stuck open or closed and that is true of every solenoid used. There should be no residual heat in them. Its the constant supply of electric to them that heats them up. We get it a lot on the solenoids we use in our hydraulic units for offshore. If you have a multi meter you could check the ohms if you get a really high reading or very low it could be faulty. I believe it should read between 10 - 12.5ohms but some say a healthy VANOS solenoid depending on the type can read between 10-60 ohms

This replacement Febi one is extremely hot when car is at operating temperature

 

[rmoconnor41]

Could be onto something there. Could swap them round and see if the fault moves.

For starters the new Febi one is probably knackered as it gets very very hot. Back to the drawing board