SNST
Active Member
This problem has been getting worse over the last 2 weeks:
Overheats at low-medium engine speeds. Running down a long hill in neutral at 40ish, temp rises towards 120°C. Increase revs to 4000, temp comes down in less than 30 secs and may well drop to less than 80°C for a while.
I've just run at idle from cold. At 100°C+ the top hose is not hot along all its length & rad header is cool. So - no or very little circulation.
New cap & T/stat. Passes the carrot test (with flying colours!)
Slight leak in expansion tank (to be replaced v. soon)
There was some leakage in heater matrix (steamy windows) so I used radweld maybe 18 months ago.
There is some squeaking from area of water pump/steering pump, but I haven't identified the source yet.
Can the rotor on the pump fail or become very inefficient?
I'll test the new t/stat, but if you suggest water pump, there are several makes. Any recommendations or bad experiences?
Any advice would be very welcome!
Overheats at low-medium engine speeds. Running down a long hill in neutral at 40ish, temp rises towards 120°C. Increase revs to 4000, temp comes down in less than 30 secs and may well drop to less than 80°C for a while.
I've just run at idle from cold. At 100°C+ the top hose is not hot along all its length & rad header is cool. So - no or very little circulation.
New cap & T/stat. Passes the carrot test (with flying colours!)
Slight leak in expansion tank (to be replaced v. soon)
There was some leakage in heater matrix (steamy windows) so I used radweld maybe 18 months ago.
There is some squeaking from area of water pump/steering pump, but I haven't identified the source yet.
Can the rotor on the pump fail or become very inefficient?
I'll test the new t/stat, but if you suggest water pump, there are several makes. Any recommendations or bad experiences?
Any advice would be very welcome!