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22nd August 2019, 09:35 PM
#31
Daily Lurker
Originally Posted by
nipagu7
mudski maybe you have a thermostat that is stuck open , so that in winter the coolant is circulating too fast and cooling the motor down and in summer if the coolant circulates to fast it cannot shed heat quick enough as it moves through the radiator to fast ( although this usually only happens when the thermostat is completely removed ) . mb do you have a cabin pollen filter , just thinking it might be blocked , you might still have reasonable air flow as there might be a bypass around the filter and possibly the heater core , its been a while but when i fitted my cabin pollen filter i think i remember that air was able to flow under it . so basically you might not be getting enough air flow thru the heater core to heat the cabin .
His Gu doesn't have a pollen filter, I can confirm this as I helped inspect his heater box as a/C drain was blocked. I believe in Australia some on the y61 patrols were never released with pollen filters...
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22nd August 2019 09:35 PM
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22nd August 2019, 10:04 PM
#32
yeah my 2011 gu didnt have a pollen filter so i just bought one and cut the slot out where it goes and it just slides into position . there have been posts about it in the past as others had done it as well . i just thought it might be a posibility as to why mb's heater dosent work ,and on that , how did the heater core look . others in the past have have said that theirs have blocked up and they have cleaned them , some by removing them completely from the car and some whilst it is still in the car although i can't recall how.
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23rd August 2019, 08:22 AM
#33
Originally Posted by
nipagu7
mudski maybe you have a thermostat that is stuck open , so that in winter the coolant is circulating too fast and cooling the motor down and in summer if the coolant circulates to fast it cannot shed heat quick enough as it moves through the radiator to fast ( although this usually only happens when the thermostat is completely removed ) . mb do you have a cabin pollen filter , just thinking it might be blocked , you might still have reasonable air flow as there might be a bypass around the filter and possibly the heater core , its been a while but when i fitted my cabin pollen filter i think i remember that air was able to flow under it . so basically you might not be getting enough air flow thru the heater core to heat the cabin .
Nah Ive tried four different brand stats. Same result. currently using a Tridon Hi flow one as it seems to cool faster is the warmer months.
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23rd August 2019, 08:25 AM
#34
Originally Posted by
MB
The heaters centainly not cold sorry gents and just a few weeks ago cleaned the external heater core only too. Just know in my Chev that switching from 75C to 88C made the heater insanely nice jumping back in the cab from say icy paddock work.
It is my belief too that old diesel donks seem to prefer running hotter than 76.5C coasting along at best I’m experiencing this winter.
Our 8.3 work Cummins sits all day on 85C and so too I believe our Louisville tipper.
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I will be interesting to see the results if you decide to change it.
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The Following User Says Thank You to mudski For This Useful Post:
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23rd August 2019, 11:19 PM
#35
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The Following User Says Thank You to MB For This Useful Post:
Rossco (24th August 2019)
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25th August 2019, 01:47 PM
#36
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The Following 2 Users Say Thank You to MB For This Useful Post:
Cremulator (25th August 2019), MudRunnerTD (16th February 2020)
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25th August 2019, 06:10 PM
#37
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The Following 3 Users Say Thank You to MB For This Useful Post:
Cremulator (25th August 2019), MudRunnerTD (16th February 2020), Rossco (28th August 2019)
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25th August 2019, 06:22 PM
#38
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The Following User Says Thank You to MB For This Useful Post:
MudRunnerTD (16th February 2020)
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25th August 2019, 07:16 PM
#39
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Just ran the pot test on a brand new OEM tropical 76.5C.
Nearly identical movement on the rising temperatures as per above although quite interesting that it was at full shut again at 74C unlike the old one at 68C shut!
Just goes to show I guess there’s more to thermostats than being black and white issues like full open or shut stuck!
Quite the 6C variance in closing times found here :-(
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25th August 2019, 07:52 PM
#40
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The Following 2 Users Say Thank You to MB For This Useful Post:
MudRunnerTD (16th February 2020), Rossco (28th August 2019)