Hi, I have recently been running the motor with the expansion tank cap slightly loosened, and this seems to be allowing the engine to run up to temperature and NOT overheat (with the expansion tank cap on now, it blows back - the water pressurises and blows back out the expansion tank cap and...

D6Jay, I am beginning to think you are right! The car has been fine without the thermostat in prior to the P gasket being done but heaters are now blowing cold with the thermostat out (as I would expect) - but then when I go up a hill the heaters go warm and the temperature gauge drops back...

He said he did do a road test, AND also left it running on the forecourt for over an hour!!!!! Bit odd init!

Just a quick update. I took the disco to the garage, and the mechanic there was extremely nice, and told me that he would be very surprised if it was the head, as there are no other symptoms. The P gasket was definately leaking, so I booked it in for the work to be done. When he took the old...

Hello, I am back with my tail between my legs and thinking very very quickly that this is now going to be a problem with the head!!!! We sorted it, heaters hot and all air out the system, run to the bloody cor shop today (only about 10 miles away) and by he time we got half way back, the damn...

Well touch wood, hubby realised a bit ofair in the termstat head and wow the heaters are warm, engine comes up to temperature fine and as of yet it is running fine. No more problems with water level or cold heaters for the minute. D6Jay I was in exactly the same thought process as you, thought...

Great :-( I have just driven it for about 20 miles, no overheating, no heaters hot though, OTHER than when I went up a steep hill for about 1/4 mile, and when I pull out at the top, the heaters are hot, for about another 1/4 of a mile then go cold again. This was the only time on this whole...

Hello, Next update and i have to say, this seems to be a good one. My hubby has blasted the head with a hose and magically the blockage has dislodged. With the termostat back in engine running fine (and sweet as a nut I may add) no overheating, sounds fine now (Have also touched the fan belt...

Thanks for this - I am going to try it tomorrow. Just out of curiosity (and really sorry for being a pain) but do I have the thermostat in or out for this process, Don;t want to make it worse by not doing as I am supposed to. Thanks

Well , here we go, this is either going to be good news OR really bad news. We ran the car this morning for about 20 miles or so, running sweet as a nut, air in heaters aired but not hot, and temp gauge didn't move out of the bottom quarter without the thermostat in. Went and bought a GENUINE...

I just bought the stat from the local supplier - don't actually think that it was a LR original - might do a search see if I can pick one up online. I will try it with the new thermostat in and also buy a new LR one and then put that in! I am so glad for these forum's hehe - thanks again

Sorry to question you, but you have put that there is no possibility of the engine overheting, BUT that the guage would respond too late!! Was it suppsoed to say that the engine could still overheat but the guage would respond too late?? Sorry, just want to get it straight in my head!! Thanks...

Hiya, well you wouldn't beleive it, BUT after all the bloody work we have done on it my mate came over and looed at it and said that it is definately the thermostat that is causing the problem, took it out, ran it, and low and behold the heaters are aired (obviously not hot) and the water is...

I am fairly sure that I have an airlock somewhere. I have back flushed the heater matrix to no avail. SO I have bypassed it for now. Thought I had sorted the problem all the pipes got hot. Then low and behold, car sat idling for over 2 hours no overheating at all, then the gauge began to rise...

Just another quick update - filled the pipe that rises vertically off the back of the head with water (as my hubby had his thumb on the bit I took it off). Put it back on very quickly, and low and behold, the heaters are still cold!!!!!! lol That pipe that we filled up is getting hot, but the...

Hi, Just another quick update - new thermostat fitted and the pipes are now hot - the only one that isn't is the metal pipe that runs to the heater matrix - so we are going to let it cool and then do the pipe removal on the back of the head, and fill it up with water. Hopefully this will solve...

It last operated fully for over an hour yesterday but this morning it only got luke warm after about quarter of an hour of running but then went cold again. Thermostat has been replaced. There was no movement at all in the thermostat when I dropped it in to the hot water. Unfortunately the...

HI, just a quick update. The thermostat appears to be a problem. We have bled the system, but the pipe from the thermostat housing to the rad is still cold. Took the stat out, dropped into boiling water - nothing!!!! Could this be the problem?? Thanks

Thank you very very much, I love laymans terms and you description is very easy to understand. Hubby has flushed rad with water and sure enough loads of "bits" came out. Put it all back together and filled up again. Left it sat idling for a few minutes with header cap off and then he's going...

The bypass pipe from the thermostat housing to the rad stays cold, as does the header tank after running. The pipes that go over the bulk head are not particularly warm, but the pipe that goes from the rad to the water pump is hot. Forgot to mention as well, it seems to have developed a squeak...