ElDude at Allison Automotive said:[post]364730[/post] I'd suggest it's probably just not flowing properly.. it's a self bleeding system with the expansion tank mounted at the highest point. .
ElDude at Allison Automotive said:[post]364734[/post] I guess you could change the thermostat. .also check the coolant temp sensor is working correctly. .. whats the condition of the housing like underneath the coil pack? ... make sure thats not bunged up with sugary corrosion. ..also check the pipework around the heater control valve. .. make sure there are not pieces of previous heater control valves stuck in there..
Kind regards Chris
YOG said:[post]364736[/post] There have been a few incidents, where the water pump blades have come loose on the spindle, and weren't rotating to circulate the coolant.
Ant laud said:[post]364740[/post]ElDude at Allison Automotive said:[post]364734[/post] I guess you could change the thermostat. .also check the coolant temp sensor is working correctly. .. whats the condition of the housing like underneath the coil pack? ... make sure thats not bunged up with sugary corrosion. ..also check the pipework around the heater control valve. .. make sure there are not pieces of previous heater control valves stuck in there..
Kind regards Chris
Thanks for getting back to me Chris, some good leads mentioned. I've not checked the thermostat or the temp sender so I'll look into that, the housing was done in Feb this year, it was as you described but I cleaned up the deposits from the outside where it was leaking (inside was clean and shiny) and refitted the hoses with new jubilee clips, it's been good since then. I'm going to put my money on it being a HCV related issue I think, I put a new one on in January to fix the "heater always on" fault and it seemed to sort it out but now it's always blowing cold and the gurgling noises seem to be coming from that region just before the engine starts to run hot. Its a long shot but could it be the dash mounted control switch, I only ask because it would be an easier fix than the thermostat and I've heard it mentioned on forums before, also heard talk of possible issues with the HCV electrical connectors. Again an easier fix. Perhaps it's not opening the HCV fully and causing self bleeding issues. Eighther way I think checking the thermostat and sender is well overdue, Its a '98 model. Hasn't let me down yet though. If it was a person it would be the type that goes to the doctor a lot with twinges and takes days off work even though there's f__k all really wrong with them.
ElDude at Allison Automotive said:[post]364757[/post]Ant laud said:[post]364740[/post]ElDude at Allison Automotive said:[post]364734[/post] I guess you could change the thermostat. .also check the coolant temp sensor is working correctly. .. whats the condition of the housing like underneath the coil pack? ... make sure thats not bunged up with sugary corrosion. ..also check the pipework around the heater control valve. .. make sure there are not pieces of previous heater control valves stuck in there..
Kind regards Chris
Thanks for getting back to me Chris, some good leads mentioned. I've not checked the thermostat or the temp sender so I'll look into that, the housing was done in Feb this year, it was as you described but I cleaned up the deposits from the outside where it was leaking (inside was clean and shiny) and refitted the hoses with new jubilee clips, it's been good since then. I'm going to put my money on it being a HCV related issue I think, I put a new one on in January to fix the "heater always on" fault and it seemed to sort it out but now it's always blowing cold and the gurgling noises seem to be coming from that region just before the engine starts to run hot. Its a long shot but could it be the dash mounted control switch, I only ask because it would be an easier fix than the thermostat and I've heard it mentioned on forums before, also heard talk of possible issues with the HCV electrical connectors. Again an easier fix. Perhaps it's not opening the HCV fully and causing self bleeding issues. Eighther way I think checking the thermostat and sender is well overdue, Its a '98 model. Hasn't let me down yet though. If it was a person it would be the type that goes to the doctor a lot with twinges and takes days off work even though there's f__k all really wrong with them.
Sounding more and more like a typical heater control valve issue
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