Heater not working

Mark P. · 9th September 2013, 10:25

With the end of summer I tried the heater on Friday while driving down the motorway and couldn't help noticing the lack of any actual heating taking place unless driving at 70 mph and even then not much heat and only occasionally. Any thoughts on where to start, does it need some work on the heater matrix?

chipsceola · 9th September 2013, 10:47

Quote:

Originally Posted by Mark P.

With the end of summer I tried the heater on Friday while driving down the motorway and couldn't help noticing the lack of any actual heating taking place unless driving at 70 mph and even then not much heat and only occasionally. Any thoughts on where to start, does it need some work on the heater matrix?

Common problem due to way the heater matrix works, good information here though with step by step guide

SD1too · 9th September 2013, 12:26

Also Mark, as you have a diesel, check that your thermostat isn't stuck in an open or partially open condition by activating the instrument pack diagnostics and monitoring the actual coolant temperature (see relevant "How to ....").

Simon

9th September 2013, 10:25	#1
Mark P. Avid contributor MG ZT-T Join Date: May 2009 Location: Howden Posts: 106 Thanks: 3 Thanked 2 Times in 1 Post	Heater not working With the end of summer I tried the heater on Friday while driving down the motorway and couldn't help noticing the lack of any actual heating taking place unless driving at 70 mph and even then not much heat and only occasionally. Any thoughts on where to start, does it need some work on the heater matrix? __________________ [SIGPIC][/SIGPIC]

9th September 2013, 12:26	#3
SD1too Doesn't do things by halves Rover 75 2.5 Connoisseur Auto (1999) Dealer launch model. Join Date: Mar 2007 Location: Former Middlesex Posts: 20,580 Thanks: 1,587 Thanked 3,749 Times in 3,181 Posts	Also Mark, as you have a diesel, check that your thermostat isn't stuck in an open or partially open condition by activating the instrument pack diagnostics and monitoring the actual coolant temperature (see relevant "How to ...."). Simon __________________ "Whatever is rightly done, however humble, is noble." Sir Henry Royce.