Question about 2002 Land Rover Discovery Series II
Hi. I assume that you already checked the thermostat valve. I believe that you have a beginning of head gasket problem or a small crack somewhere. The best test for head gasket, even being a time consuming test, is to remove all spark plugs, fill up the radiator, put one cylinder at top dead center, which means the cylinder is in explosion position, install a cylinder leak test hose attachment (from a cylinder leak tester that you can purchase a Harbor Freights) and connect a compressor hose. Observe if air bubbles comes from the radiator. Sometimes it takes longer to show up so be patience. I've had an Honda Civic that was taking over 5 minutes to shows bubbles. If it does, your head gasket is beginning to get bad. Good luck.
Posted on Dec 31, 2013
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
You need to make sure there is no air trapped in the system. I assume you flushed the radiator when you changed the thermostat. I also assume you installed fresh coolant mixed 50/50 antifreeze and distilled water. I also assume you installed the thermostat correctly with the spring facing the engine. Look on the upper part of the cooling system and the engine for bleeder valves (If Equipped). Now remove the radiator cap from a cold engine and make sure the radiator is totally full. Set the heater temperature control to HOT. Start the engine and look for escaping air bubbles from the radiator. Keep the coolant level full at all times. It will take awhile for the thermostat to fully open so be patient. Once you see no more escaping air bubbles install the cap. Wait about 2 minutes with the engine running and use the bleeder valves to remove any more trapped air from the system. Post back if this did not help.
Posted on Dec 14, 2009
If it is not leaking try taking the top off the reservoir, crank it and let it warm up, if no coolent rises into the reservoir when it is warm, add some coolant until it just starts to fill the res...it might go down some then and more till it rises. if it does not rise or fall. Turn it off, let it cool the fill to the mark. If this aint it then it might be leaking....check the heater hoses and inside the care for coolant. might be the heater.
Posted on Mar 27, 2011
Tips for a great answer:
Aug 26, 2014 | Cars & Trucks
Aug 22, 2014 | 2005 GMC Sierra
May 15, 2014 | 2005 GMC Yukon Denali
Aug 06, 2011 | 1997 Nissan Pickup
Jun 02, 2011 | Ford Ranger Cars & Trucks
Nov 03, 2009 | Chevrolet 1500 Cars & Trucks
89 people viewed this question
Usually answered in minutes!