Front Heater No Good. Rear Heater Ok.

[Pemo]

I'm trying to figure out why my 2005 Galaxy (2,3 petrol) does not heat up properly. The rear heater makes nice, hot air but air from the front heater is only lukewarm. Did already change the thermostat. That made no change. The water is about 90

[seatkid]

Check both hoses to the heater matrix are (engine temperature) hot. You can get to these in the engine bay next to the wiper motor. You may want to remove the plastic tray (3 bolts) to get easier access.

 

 

If they are both hot then it could be a temperature flap problem (manually or electically controlled depdending if you have manual a/c or climate control) otherwise may it just be an air lock at the top of the matrix hoses. (They are the ones behind the arrow in the picture.)

 

[Pemo]

Thank you for yoiur help!

 

I have been trying to remove air locks. No good. The electric pump is as far as I know an "After run pump" to ensure that the engine is cooled down equally, right? It does not work, so I am thinking if the missing flow from the electric puump "C" is part of the problem? Please attacted picture. If it looks odd it is because I drive in the wrong side of the road.

 

The temperatures were like this today:

 

Ambient temp: -6

[seatkid]

Remember that the rear heater is recirculation only and is heating the air from inside the car. If you put your front blower on recirc I expect you'll get similar temperatures at the front.

 

Could be your run on pump is siezed and blocking flow.

[Pemo]

Yes. I noticed that. I also tried not to recirculate the air, but it did not change the temperatures. It was quite cold the other day and the temperature inside the car was below 0

[Pemo]

Run on pump is changed into the brushless Bosch pump. Imported from Germany. http://seekpart24.com/bosch/additional-water-pump-392023004?c=100091&at=

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[chrispb123456]

Well done :)