Lazy Heater V6

mondeoman · 21st December 2009, 22:34

Anyone got any ideas here?

I know its been ****** cold these last few days but the heater in my car seems unable to cope!

With the temp up to 28 it gets warm and no more, almost as though it was only on about 22 degrees, and that's on the move. When idling the heater hardly works at all, does'nt matter how much I play with the controls.

Anyone got any ideas?

P

MN190 · 21st December 2009, 22:59

Blocked heater matrix
Thermostat stuck in open position
Not enough coolant

The Jugs · 21st December 2009, 23:44

Set the heat to max. If its warmer on the drivers side it'll be blocked matrix.

richardwjackson · 22nd December 2009, 07:01

mine takes a good 15-20 mins on the move before it gets anything like hot.

T-Cut · 22nd December 2009, 09:04

If you get more heat by revving the engine compared with tickover, then there's probably an air bubble in the system. The coolant sytem should be bled and topped up as described in Haynes. Alternatively, an evacuation using a Pela type pump will probably get the air out. If revving makes no difference at all, then the matrix probably has a blockage/in silted up. If the engine cools down when travelling, but stays hot while stationary, then the thermostat should be replaced.

TC

Mike · 22nd December 2009, 11:08

http://www.the75andztclub.co.uk/foru...ead.php?t=7515

hth

21st December 2009, 22:34	#1
mondeoman Regular poster MG ZTTV6SE Mgzt CDTi Join Date: Jan 2007 Location: midlands Posts: 86 Thanks: 0 Thanked 0 Times in 0 Posts	Lazy Heater V6 Anyone got any ideas here? I know its been ****** cold these last few days but the heater in my car seems unable to cope! With the temp up to 28 it gets warm and no more, almost as though it was only on about 22 degrees, and that's on the move. When idling the heater hardly works at all, does'nt matter how much I play with the controls. Anyone got any ideas? P

21st December 2009, 23:44	#3
The Jugs Loves to post Rover 75 saloon club SE manual 2.0 V6 Join Date: May 2008 Location: Chatham, Kent. Posts: 289 Thanks: 0 Thanked 0 Times in 0 Posts	Set the heat to max. If its warmer on the drivers side it'll be blocked matrix. __________________ [SIGPIC][/SIGPIC]

22nd December 2009, 07:01	#4
richardwjackson Posted a thing or two Mercedes A-Class A180 CDI ECO Join Date: Sep 2009 Location: Crewe Posts: 1,292 Thanks: 0 Thanked 1 Time in 1 Post	mine takes a good 15-20 mins on the move before it gets anything like hot. __________________ http://i1231.photobucket.com/albums/...psc44ada88.jpg[

22nd December 2009, 11:08	#6
Mike This is my second home Rover 75 V8 Join Date: Oct 2006 Posts: 3,448 Thanks: 0 Thanked 206 Times in 32 Posts	http://www.the75andztclub.co.uk/foru...ead.php?t=7515 hth __________________ Mike [SIGPIC][/SIGPIC]

21st December 2009, 22:59	#2
MN190 Posted a thing or two MG ZT 190+ Join Date: Nov 2006 Location: North Norfolk Posts: 1,423 Thanks: 2 Thanked 11 Times in 11 Posts	Blocked heater matrix Thermostat stuck in open position Not enough coolant

22nd December 2009, 09:04	#5
T-Cut This is my second home Rover75 and Mreg Corsa. Join Date: Nov 2006 Location: Sumweer onat mote o'dust (Sagin) Posts: 21,752 Thanks: 341 Thanked 3,660 Times in 2,924 Posts	If you get more heat by revving the engine compared with tickover, then there's probably an air bubble in the system. The coolant sytem should be bled and topped up as described in Haynes. Alternatively, an evacuation using a Pela type pump will probably get the air out. If revving makes no difference at all, then the matrix probably has a blockage/in silted up. If the engine cools down when travelling, but stays hot while stationary, then the thermostat should be replaced. TC