Heater Stopped Working

User avatar
Chris Skinner
Patrolman
Patrolman
Posts: 947
Joined: 26 Nov 2009 12:58
Full Name: Chris Skinner
Nickname: Chris
Home Town: Centurion
Current 4x4: Nissan Patrol 4,8 GRX 2005
Home Language: English
Has thanked: 10 times
Been thanked: 56 times

Heater Stopped Working

Post by Chris Skinner » 03 May 2017 15:00

Hey, my heater has let me down... very little, if any heat, a little intermittent - fan, aircon still work great... any ideas? :think:

User avatar
Peter Connan
Moderator
Posts: 5421
Joined: 10 Sep 2010 07:21
Full Name: Peter Connan
Nickname: Piet
Home Town: Kempton Park
Current 4x4: 1996 Patrol 4.5SGL
Home Language: Afrikaans
Location: Kempton Park
Has thanked: 285 times
Been thanked: 366 times

Re: Heater Stopped Working

Post by Peter Connan » 03 May 2017 18:50

If I understand correctly, the Patrol's heater radiator is always on, but airflow is controlled. This is done by a set of electronically-operated flaps.

If so, one of these must be on the blink, or stuck. HAve you checked fuses?
Mag ons ons kenniskry met lekkerkry aanhoukry.

User avatar
Michael
Moderator
Posts: 2628
Joined: 05 Mar 2014 14:39
Full Name: Michael
Nickname: Steyn
Home Town: Centurion
Current 4x4: Patrol GU 4.2 Turbo Diesel
Home Language: Afrikaans
Location: Centurion, PTA
Has thanked: 163 times
Been thanked: 275 times

Re: Heater Stopped Working

Post by Michael » 04 May 2017 05:33

As far as I know the heater is not always on (I am refering to the GU) the "heat adjustment knob" has a cable that runs to a flap to control the water flow through the radiator under the dash.

First check if that cable is still secure in its place where it should be. I have found both mine and Tinus's have pulled out and hence could not fully open or close that flap/valve.

I have a heater core (I think) in my garage, will take a pic and post it
"The Just shall live by Faith" Rom1:17

Check out my build here My Patrol
And my engine rebuild here mostly engine related stuff

User avatar
ricster
Patrolman 1000+
Patrolman 1000+
Posts: 5954
Joined: 13 Jan 2010 11:16
Full Name: Cedric Warner
Nickname: Cedric
Home Town: Alberton Gauteng
Current 4x4: '99 Nissan Patrol 4.2 Turbo Diesel
Home Language: English
Location: LA..... No not Los Angles ..... Lower Alberton, Gauteng
Has thanked: 255 times
Been thanked: 255 times

Re: Heater Stopped Working

Post by ricster » 04 May 2017 08:44

Is the Climate Control on the 4.8 the same as our simple heater/cooler setup on all the other GU's other than the 4.8?
Regards
Cedric
Nissan Patrol GL 4.2 Diesel Turbo (Iron Maiden)
Nissan SANI 3.0 V6 4x4 (SOLD)
Isuzu KB 280 DT 2x4 ('ol Smokey) - SOLD
Suzuki TL 1000R "V twin" (Growler) - SOLD

User avatar
Chris Skinner
Patrolman
Patrolman
Posts: 947
Joined: 26 Nov 2009 12:58
Full Name: Chris Skinner
Nickname: Chris
Home Town: Centurion
Current 4x4: Nissan Patrol 4,8 GRX 2005
Home Language: English
Has thanked: 10 times
Been thanked: 56 times

Re: Heater Stopped Working

Post by Chris Skinner » 04 May 2017 08:53

Thanks Guys.
Peter - I checked fuses, don't see any blown but also not exactly sure which ones control the heater servos etc... see pics ?? I also don't know how to check the relays.
Michael - how easy to locate and check the cable you mentioned (not sure if 4.8 has such cable - it seems to all electronic??
Attachments
01.jpg
01.jpg (102.23 KiB) Viewed 1961 times
02.jpg
02.jpg (83.14 KiB) Viewed 1961 times
03.jpg
03.jpg (101.92 KiB) Viewed 1961 times
04.jpg
04.jpg (49.35 KiB) Viewed 1961 times

User avatar
ricster
Patrolman 1000+
Patrolman 1000+
Posts: 5954
Joined: 13 Jan 2010 11:16
Full Name: Cedric Warner
Nickname: Cedric
Home Town: Alberton Gauteng
Current 4x4: '99 Nissan Patrol 4.2 Turbo Diesel
Home Language: English
Location: LA..... No not Los Angles ..... Lower Alberton, Gauteng
Has thanked: 255 times
Been thanked: 255 times

Re: Heater Stopped Working

Post by ricster » 04 May 2017 09:23

Yeah I don't think the 4.8 has a manual cable. I'm thinking outside the box at the moment (well actually inside the heater box.....hahaha ). I wonder if the heater radiator is full of dirt and debris which is clogging the cores of the heater radiator. Does yours have the pollen filter? If not then over time the dust and few odd leaves seem to make it through and slap up against the heater radiator. If yours does have the pollen filter in then I doubt that is the problem, other than the filter itself being clogged, but then your airflow through the vents would be very little.

Have a look at this. It talks about the aircon but on the pics you can see the amount of dirt that collects in there.

http://www.patrol4x4.com/forum/nissan-p ... ean-40563/
Regards
Cedric
Nissan Patrol GL 4.2 Diesel Turbo (Iron Maiden)
Nissan SANI 3.0 V6 4x4 (SOLD)
Isuzu KB 280 DT 2x4 ('ol Smokey) - SOLD
Suzuki TL 1000R "V twin" (Growler) - SOLD

User avatar
ricster
Patrolman 1000+
Patrolman 1000+
Posts: 5954
Joined: 13 Jan 2010 11:16
Full Name: Cedric Warner
Nickname: Cedric
Home Town: Alberton Gauteng
Current 4x4: '99 Nissan Patrol 4.2 Turbo Diesel
Home Language: English
Location: LA..... No not Los Angles ..... Lower Alberton, Gauteng
Has thanked: 255 times
Been thanked: 255 times

Re: Heater Stopped Working

Post by ricster » 04 May 2017 09:26

Check this too.... I see the goodies are adjusted via vacuum pipes

http://www.patrol4x4.com/forum/nissan-p ... air-53707/

and another comment from the Aussie site....
check your heater hoses for blockage and the controll valve on the fire wall where the hoses go to
see if it is working
cable from controll pannel leaver could have slipped
Regards
Cedric
Nissan Patrol GL 4.2 Diesel Turbo (Iron Maiden)
Nissan SANI 3.0 V6 4x4 (SOLD)
Isuzu KB 280 DT 2x4 ('ol Smokey) - SOLD
Suzuki TL 1000R "V twin" (Growler) - SOLD

Wilkie
Patrolman 1000+
Patrolman 1000+
Posts: 1480
Joined: 24 Feb 2014 15:33
Full Name: Errol Wilken
Nickname: Wilkie
Home Town: Pretoria
Current 4x4: 1999 4.5 GRX Nissan Patrol
2004 BMW 3.0D X5
Home Language: Afrikaans
Has thanked: 70 times
Been thanked: 92 times

Re: Heater Stopped Working

Post by Wilkie » 04 May 2017 10:27

Ai Chris sorry to be the bearer of negative news..the patrols fitted with climate control is all servo operated and it has a heater unit (valve )that sits inside the cab behind the aircon unit
You might be lucky and try to flush the system with heater on hot and hope its just a bit sticky and that it will come loose..you will see that above the exhaust manifold there is two rubber hoses going into the cab
if the heater is on they should be equally hot which mean the hot water is circling .......other than that ...Graham and David has got a 2nd spare unit
Good luck

AndriesS
Patrolman
Patrolman
Posts: 600
Joined: 01 Feb 2010 07:42
Full Name: Andries
Nickname: None
Home Town: None
Current 4x4: None
Home Language: Afrikaans
Has thanked: 15 times
Been thanked: 23 times

Re: Heater Stopped Working

Post by AndriesS » 04 May 2017 10:44

on the 4.8 GL and I'm sure the GRX the heater is always on - i.e water flows through the matrix the whole time, temp is controlled by diverting more or less air flow over the matrix.

And I would guess the reason fro most patrols blowing very hot air into the cabin after a short engine switch off (10 min?), is the heat soak from the heater / aircon unit .

as mentioned first check if both heater pipes are hot, if only one is hot in could mean that the matrix is blocked. If you only want to flush the heater then you could do it by disconnected the 2 pipes in the engine bay and see what comes out

User avatar
Chris Skinner
Patrolman
Patrolman
Posts: 947
Joined: 26 Nov 2009 12:58
Full Name: Chris Skinner
Nickname: Chris
Home Town: Centurion
Current 4x4: Nissan Patrol 4,8 GRX 2005
Home Language: English
Has thanked: 10 times
Been thanked: 56 times

Re: Heater Stopped Working

Post by Chris Skinner » 04 May 2017 11:21

Thanks all the inputs guys - will check it out tonight!

Post Reply

Return to “11. Chassis, Bodywork & Trim”

Who is online

Users browsing this forum: No registered users and 1 guest