No just the one... It regulates the vacuum supplied to the turbo vane actuator.
If you're having vane problems it's usually the N75 or the actuator its self. Sometimes it's the vanes sticking but that only tends to be found on high mileage engines.
How do the 2 egr pressure valve solenoids work as I think the person I questioned about an n75 valve that thought I had two must have been confused by these other valves.
Have a look at this. It's got a basic description of what all the various parts of the engine do. Should be helpful to get your head around what stuff does on the engine.
It's not the Seat specific version but I don't believe they make any changes to it as installed in the Leon from the VW configuration.
I have my new valve so let's see if it makes a difference. I got a boost pressure sensor to just in case. 1 minute it seems to pull okish the next I think it hardly has enough go to pass a push bike.
Done the Mr muscle clean today and changed the boost pressure sensor at the same time. Quite easy all round really. Quick outing felt ok ish but tomorrow will really tell.
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