kavefish
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Thanks for the good advice - and now I have a dumb question.... where is this pulley you guys are mentioning?
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Cooling Problems
- Thread starter kavefish
- Start date
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The pulley with the fan-belt running over it. wot you photographed earlier.:doh:
An alternative to using a screwdriver between the bolts to hold it still, is to stick something into one of them holes in the shaft/hub wot you can see in your picture in-between the fan and the pulley.
kavefish
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Okie. Had a new idea for a candidate cause: something to do with the viscous fan clutch.
I read this thread and thought it sounded awfully familiar. Basically, my Landy was over-cooling for a few months (temp gauge never reading over 1/4 or 1/3 from cold) and then suddenly under-cooling.
Also, I noticed something a while back that I wasn't sure whether to document here because I wasn't sure how it was happening. I had the bonnet up with the engine running (watching for coolant leaks) and felt a steady, stiff breeze from the fan while standing beside the engine bay. And then suddenly the air flow was only about 1/10th of what it had been. That's also when the engine temp really starts to climb. The fan was still moving so I assumed it was still working at full strength, but at that point I didn't know about the fan clutch.
If I understand correctly, it'll be one of two things: either the clutch itself or whatever causes the clutch to engage/disengage. So, what can I check to tell?
I read this thread and thought it sounded awfully familiar. Basically, my Landy was over-cooling for a few months (temp gauge never reading over 1/4 or 1/3 from cold) and then suddenly under-cooling.
Also, I noticed something a while back that I wasn't sure whether to document here because I wasn't sure how it was happening. I had the bonnet up with the engine running (watching for coolant leaks) and felt a steady, stiff breeze from the fan while standing beside the engine bay. And then suddenly the air flow was only about 1/10th of what it had been. That's also when the engine temp really starts to climb. The fan was still moving so I assumed it was still working at full strength, but at that point I didn't know about the fan clutch.
If I understand correctly, it'll be one of two things: either the clutch itself or whatever causes the clutch to engage/disengage. So, what can I check to tell?
sypher
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kavefish
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- Gloucestershire
Okie - after a holiday and several (unrelated) trips to A&E for my son, I finally got some time. In case you missed last week's exciting episode, here's where we left our hero:
The new viscous fan clutch is installed. Rad is flushed & topped up with tap water. Thermostat is removed.
Upon replacement if the fan clutch, initial impressions were that it was fixed. After ~10 minutes at idle the temp gauge was only 1/3 from cold. But after a short test drive (up a half-mile hill and then back down) the temp gauge went up - needle still in the white and really not that far past straight up and down (about the thickness of the needle away from the black gap between white and red).
Question: even without a thermostat, would having only water in the rad explain the elevated temp? I'm trying to use water to do my testing to avoid wasting anti-freeze. (At the very least, I've still got to put a thermostat back in).
Also, Steve, how do I check if the fuel mixture has leaned off? Could I engage the choke to richen the mixture and see if that helps?
The new viscous fan clutch is installed. Rad is flushed & topped up with tap water. Thermostat is removed.
Upon replacement if the fan clutch, initial impressions were that it was fixed. After ~10 minutes at idle the temp gauge was only 1/3 from cold. But after a short test drive (up a half-mile hill and then back down) the temp gauge went up - needle still in the white and really not that far past straight up and down (about the thickness of the needle away from the black gap between white and red).
Question: even without a thermostat, would having only water in the rad explain the elevated temp? I'm trying to use water to do my testing to avoid wasting anti-freeze. (At the very least, I've still got to put a thermostat back in).
Also, Steve, how do I check if the fuel mixture has leaned off? Could I engage the choke to richen the mixture and see if that helps?
