My new V8 query

[Mark190]

Originally Posted by SCP440

In the plenum in front of the windscreen, remove the wiper arms and the plastic in front of the screen and its above the passengers feet. The pollen filter is in there as well.
Check to see if the actuator is moving when you select different heat settings and it has 3 pipes attached to it.
When you go from ''low'' with the engine hot the pipe that gets hot should change as you increase the temp to ''high''.
It is a bypass valve so hot water is always passing through it and selecting more heat allows some or all of the hot water to enter the heater matrix and as it gets up to the desired heat it goes back into bypassing the heater valve until more heat is needed.
The heating in mine was hit and miss and fitting one of these fixed and returned it to full health https://www.dmgrs.co.uk/collections/...alve-jge000020

Ok mate thanks looks like a process of elimination again although i do hate trying to remove the wiper arms, they have a habit of not wanting to come off!