Ok so I brought a lr3 or the l322 I believe, it's a 07 vogue 3.6. Basically it had over heated going about 50mph, turnt it off got it recovered back home. I have just sat out there for a hour revving it and letting it idle even took it for a hard drive round the village at operating temp and hadnt overheated. Just wondering if anyone could point me in the right direction. Also the water in the expansion tank goes once started but if I remove the pressure cap it all appears and without losing any. Any help would be much appreciated
LR3 is a Discovery and the L322 is a Range Rover....
You say 07 Vogue with the 3.6 which I assume you refer to the TDV8 engine, which is an L322 model Range Rover.
When you removed the expansion cap, did it hiss at all or bubble over? The coolant system is under pressure, and the rising and falling of the coolant level in the expansion tank is probably a by-product of this system pressure - remember the expansion tank is to capture coolant as the heat causes it to expand and contract as it cools. seems odd that is goes down and then rises again when the cap is off, but if it is not losing water than fine. It may pay to do a hydrocarbon 'sniff' test to rule out any combustion fumes in the cooling system caused by a dodgy headgasket or cracked waterway.
The sudden rise in temp could be caused by a dodgy temp sensor, I had this on 4.4 V8, the wire had chaffed through and caused erratic temp readings, check the sensor, connector and wiring thereto to rule this out.
You say 07 Vogue with the 3.6 which I assume you refer to the TDV8 engine, which is an L322 model Range Rover.
When you removed the expansion cap, did it hiss at all or bubble over? The coolant system is under pressure, and the rising and falling of the coolant level in the expansion tank is probably a by-product of this system pressure - remember the expansion tank is to capture coolant as the heat causes it to expand and contract as it cools. seems odd that is goes down and then rises again when the cap is off, but if it is not losing water than fine. It may pay to do a hydrocarbon 'sniff' test to rule out any combustion fumes in the cooling system caused by a dodgy headgasket or cracked waterway.
The sudden rise in temp could be caused by a dodgy temp sensor, I had this on 4.4 V8, the wire had chaffed through and caused erratic temp readings, check the sensor, connector and wiring thereto to rule this out.
Ahh that explains the difference between the two thank you buddy !!
And when I removed the it was hot and it was hissing and bubbling as I undone it and the coolant came back up. Sorry I think I may have wrote it wrong the coolant will disappear once I switch the engine on with the pressure cap on. If I release it slowly the coolant will reappear.
And when I removed the it was hot and it was hissing and bubbling as I undone it and the coolant came back up. Sorry I think I may have wrote it wrong the coolant will disappear once I switch the engine on with the pressure cap on. If I release it slowly the coolant will reappear.
brianp38dse
Well-Known Member
Sounds like its low on coolant and needs topping up.
You definitely need to refill the coolant. I have the same car, and my coolant level sits between the two lines when cold, slightly higher when warm. Start your car, take cap off tank and refill until the level sits steady close to the upper level line. The coolant should definitely not disappear when you start, so you have air in the system. Most likely, once you have the correct amount of coolant, you will find that it's escaping somewhere. Look for leaks.
