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series 2 overheating

Hi, having problems with my series 2 engine overheating. the engine is actually in a series 3 landy, but thats another story. was running fine, then for no apparent reason started overheating when you go over

60ks, it will drive round town all day no problem but take it on the open road and up the temp goes. I have changed the radiator, thermostat, and just renewed the waterpump!! (they all needed repalcing as they were all knackered) but still the same problem.and i have checked the timing, no oil in the water and no bubbles in the radiator. Checked the brakes are not sticking on and i have changed the temp sender unit. ANY SUGESTIONS. The one good point is i will end up with a new landy if i keep replacing the parts at this rate. Thanks
Reply to
landyNZ
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'Started overheating' - was it really a sudden change? Had you changed/done anything immediately before you noticed the problem?

Are you measuring 'overheating' on the gauge or does it have other overheating symptoms like chucking out water? Check the gauge/sender by immersing the (connected) sender in boiling water.

Did you use the correct thermostat with the 'skirt'? The more common 'skirtless' ones do not block the bypass when open resulting in some recirculation - the radiator is not being used to its full capacity.

Changed the radiator - for a new one or just a different potentially equally blocked one?

Fan fitted back to front?

Reply to
Dougal

replaced the radiator cap too? if not then do so with one of the right spec! (they cost bugger all) a leaky radiator cap will cause the cooling system to not pressurise and the engine overheats very easily then. Mine broke on my car and it took about 2 miles and one hill from cold before it boiled over!. it usually is just at normal by the top of this hill..

Reply to
Tom Woods

On or around Sat, 19 May 2007 12:52:19 +0100, Dougal enlightened us thusly:

that's a good point. the series thermostat is an odd one unlike almost anything else.

simple test would be to remove the stat and run without it, see if it overheats.

Reply to
Austin Shackles

"landyNZ" wrote

If the only sign of overheating is the gauge, and especially if the fuel gauge is also misreading, then it's probably the age old Series 111 problem of faulty earth on the gauges. You need to undo the dash panel and ease it forward making sure you don't break the indicator switch. Behind you will find a couple of brass studs sticking out, unscrew the knurled nuts which hold on the earth connectors just enough to allow you to use some fine sandpaper to clean up the connections, rub with a very little Vaseline and retighten nuts. Cured my Series 111 overheating and misreading fuel gauge instantly. Small hand are useful for this job btw.

Reply to
Bob Hobden

used some old gauges on the new sender unit and it went off the scale, changed the new sender with an old one i had sat in and engine in he garden and it all reads o.k. now. looks like a faulty new sender unit!!! and that was the first thing i changed. But now i have new cooling system which is not a bad thing to have on the truck.

cheers all

Reply to
landyNZ

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