Having read through other posts regarding problems with the heater blowing warm not hot, I decided to see if I could find the source of my problems.
Coolant level was low so I topped up with the intention of bleeding the system. Ran the engine for a few minutes, then checked the temperature of the pipes for the matrix at the bulkhead. Both were getting warm, whilst some of the other hoses were still cold. This confirmed something I'd read on another post, that the water runs through the matrix before the thermostat opens. Heater temp was just off cold.
Ran until stat opened, pipes all hot and heater blowing hot. Checked the bleeds on the matrix pipe and the top of radiator. Both produced water, no air.
Left car to run until fan kicked in. Before it did, the expansion cap released some of the coolant, twice. Another minute and the fan kicked in.
I believe the lack of heating is due to the coolant system being low. I know the system was overfilled but should the cap release water like that. I also think that when it does it allows too much coolant out leaving the system low. Can't see leaks from anywhere else and the level does get to point where it remains constant.
Any suggestions / help gratefully received.
Alistair
Coolant level was low so I topped up with the intention of bleeding the system. Ran the engine for a few minutes, then checked the temperature of the pipes for the matrix at the bulkhead. Both were getting warm, whilst some of the other hoses were still cold. This confirmed something I'd read on another post, that the water runs through the matrix before the thermostat opens. Heater temp was just off cold.
Ran until stat opened, pipes all hot and heater blowing hot. Checked the bleeds on the matrix pipe and the top of radiator. Both produced water, no air.
Left car to run until fan kicked in. Before it did, the expansion cap released some of the coolant, twice. Another minute and the fan kicked in.
I believe the lack of heating is due to the coolant system being low. I know the system was overfilled but should the cap release water like that. I also think that when it does it allows too much coolant out leaving the system low. Can't see leaks from anywhere else and the level does get to point where it remains constant.
Any suggestions / help gratefully received.
Alistair
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