Putting this out there before I start figuring this out - incase a common issue:
Was driving my Discovery 1 up hill around a corner at about 3000 RMP when I noticed engine temp starting to rise. I pulled off before I was anywhere in the red. The coolant In the reservoir was boiling and I couldn't feel any pressure in the upper hose while motor was running - I figured my thermostat failed in the closed position.
Got home (keeping an eye on engine temp) and took off the thermostat housing. Thermostat was open and looked in good clean condition. I put the housing back without the thermostat and ran the engine. Still no pressure in the upper hose.
No strange noises come from the water pump and water in the reservoir is still getting very hot when running but no circulation. No obvious leaks. So I'm wondering:
1. Could the heater core be causing blockage? In that case would bypassing it be the way to diagnose this issue?
2. I would imagine if the radiator was blocked I would get full pressure on the top hose but none on the bottom - is that correct?
3. Would water pump failure create this situation because I would think it would fail by leaking or having a bearing fail but still push water as long as the pully was turning.
If anyone has encountered this before I would be glad to hear your thoughts.
Always appreciated.
Was driving my Discovery 1 up hill around a corner at about 3000 RMP when I noticed engine temp starting to rise. I pulled off before I was anywhere in the red. The coolant In the reservoir was boiling and I couldn't feel any pressure in the upper hose while motor was running - I figured my thermostat failed in the closed position.
Got home (keeping an eye on engine temp) and took off the thermostat housing. Thermostat was open and looked in good clean condition. I put the housing back without the thermostat and ran the engine. Still no pressure in the upper hose.
No strange noises come from the water pump and water in the reservoir is still getting very hot when running but no circulation. No obvious leaks. So I'm wondering:
1. Could the heater core be causing blockage? In that case would bypassing it be the way to diagnose this issue?
2. I would imagine if the radiator was blocked I would get full pressure on the top hose but none on the bottom - is that correct?
3. Would water pump failure create this situation because I would think it would fail by leaking or having a bearing fail but still push water as long as the pully was turning.
If anyone has encountered this before I would be glad to hear your thoughts.
Always appreciated.
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