Joe101

Joe101

Member
Hi, new to the forum and my disco 2 facelift. I’ve been having issues with the cooling system since i got the car. So far I’ve replaced head gasket, thermostat, rad cap and flushed the heater matrix all was good. Drove around 150 miles and bled the system again got a little air out. Then today going uphill I lost power and it began to overheat. No loss of coolant. Seemed highly pressurised ? Left it to cool and opened the cap got fair bit of air out still no loss of coolant though. Normal ? Carried on home all was good for 20 miles then it began to overheat again. Any ideas on cause. Any help would be greatly appreciated. This is my first landy and the cooling system seems randomly complex. Had no heat from the blowers all day today but have had some since hg replacement. Thanks
 
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Joe101 said:
Hi, new to the forum and my disco 2 facelift. I’ve been having issues with the cooling system since i got the car. So far I’ve replaced head gasket, thermostat, rad cap and flushed the heater matrix all was good. Drove around 150 miles and bled the system again got a little air out. Then today going uphill I lost power and it began to overheat. No loss of coolant. Seemed highly pressurised ? Left it to cool and opened the cap got fair bit of air out still no loss of coolant though. Normal ? Carried on home all was good for 20 miles then it began to overheat again. Any ideas on cause. Any help would be greatly appreciated. This is my first landy and the cooling system seems randomly complex. Had no heat from the blowers all day today but have had some since hg replacement. Thanks
Click to expand...
Have you dipped the oil to see if there's any gooey creamy yellow stuff in there? Hate to say but it sounds like hg again.Have a look at oil and if it's clean then hopefully I'm wrong and go from there
 
Yeah there is no sign of oil intrusion the oil is actually surprisingly clean still I’m hoping it’s not the head gasket again. Can it be if I’m not loosing and coolant ? I’m wondering if I’m getting all the air out. The radiator seemed to be cold in comparison to the top hose
 
Joe101 said:
Yeah there is no sign of oil intrusion the oil is actually surprisingly clean still I’m hoping it’s not the head gasket again. Can it be if I’m not loosing and coolant ? I’m wondering if I’m getting all the air out. The radiator seemed to be cold in comparison to the top hose
Click to expand...
May be water pump or its sucking air in somewhere.post symptoms up in disco section and some body cleverer than me will have some good ideas where to look and what for.Dint like the sound of loss of power
 
Also there's a good thread on there about thoroughly bleeding the air out so you don't get any airlocks which it could be if you're not getting heat
 
Thanks! ill post it up on there then. I had considered a new water pump interesting you mentioned it too.
 
I think sometimes it's hard to tell when there's something wrong with them unless they're screeching or grinding while turning over.The pressure in the system does sound like air but as I say I'm no expert on pumps
 
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