Question about 2002 Land Rover Discovery Series II

1 Answer

Over heating Truck runs fine for about 20minutes then sometimes it over heats and then shuts off then sometimes it will run fine. I've changed the radiator,all hoses and it still is over heating and some time it doesn't. Head gasket test was fine I'm at a loss please help me.....

Posted by on


1 Answer

  • Level 1:

    An expert who has achieved level 1.


    An expert that hasĀ over 10 points.


    An expert whose answer gotĀ voted for 2 times.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 14 Answers

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


6 Suggested Answers

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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

  • 55 Answers

SOURCE: just replaced head gaskets vehicle overheating top

clogged rad. try removing thermastat.. it might be sized,

Posted on Nov 29, 2009

  • 1 Answer

SOURCE: rover 45 over heating radiator stays cold and when

my rover 45 wont start it makes a screaching noise when i turn the key . but wont fire up

Posted on Dec 01, 2009

  • 2841 Answers

SOURCE: Ive changed out my water pump as well as my fan

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

  • 8 Answers

SOURCE: Engine is losing antifreeze. New radiator,

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 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

  • 560 Answers

SOURCE: Overheating

ckeck thefan clutch if you can spin it easy by hand eng. off! make sure the air is bled out of the cooling system if the fan is easy to turn its junk

Posted on Jun 11, 2012

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

My 95 ford f150 runs great till it warms up it seems then the fuel pump looses power n shuts down wait few mins kicks back on runs fine till few min later

Sounds like your ignition module it is common on fords to do this when its cool it will start and run fine but once it heats up the truck dies until you let it cool down again and then your up and running till it heats up again. Some modules are mounted on the fender others are mounted with the distributor have it checked and let me know how it went.

Aug 26, 2014 | Cars & Trucks

1 Answer


Sounds like the blower control module. Alo inpect the multi wire plug,they sometimes get damaged from the heat. The module and plug should be in the immediate vicinity of the blower motor,generally behind or below the glove box

Aug 22, 2014 | 2005 GMC Sierra

1 Answer

Over heating.

If you have a viscous fan hub on the fan I would suspect that it is not operating correctly and would have it checked out . Possible that the bi-metal strip in the front is missing or the pin behind it is sticking

Feb 17, 2014 | 2003 Ford F250 Super Duty Crew Cab

1 Answer

2005 Chevrolet Avalanche overheating

Could be air look or radiator.Any leak head gasket.

May 10, 2013 | 2005 Chevrolet Avalanche

1 Answer

I would like to know the actual temp it should run after changing thermostate. It runs about 1/2 way up. But when you cut it off and restart it its above 1/2 for a minute or so. I bleed the air valve on it...

When you run the engine, the coolant will remove heat and release it in the radiator. After you shut the engine off, the heat from the cylinders will still be there and the coolant will heat up some more. This is normal since there is no cooant circulating through the radiator.Without an actual temp gauge, there isn't any way of knowing just how much warmer it gets. I own a 1994 F 350 and have installed actual gauges. I can run my truck and watch the coolant temp. If I shut it off for up to 20 minutes, the gauge will go up ( sometimes as much as 20 degrees) when I start the engine, but return to the normal temps as the coolant is ciculated through the radiator.

Aug 06, 2011 | 1997 Nissan Pickup

1 Answer

The truck will run about 30 minutes then try to quit or stall out. I've changed the "in line" fuel filter, plugs, plug wiers, and reset the timeing chain. Dont no what to do from here. By the...

if you first get in the first start of the day and it runs great you have full power that tells me that everything youve done so far is good because it wont run great at any time if those things are bad, it may be 2 things you might have some bad fuel [water] you might try some heat [yellow bottle at auto store] in your gas tank if that dosent work it might be a new problem i had a ford that done the same thing, it was a clogged catalittic converter if its going bad your truck will not have power and will idol sloppy after it heats up. i found mine after it was trying to die on me after i had driven it long enough to heat it up. it was dark and i crawled under the truck and could see it glowing red hott i changed it and it ran great. the converter is located infront of the muffler or before the muffler it has a heat shield over it and you should be able to see if its glowing. i checked it in the evening after the sun sett so it would be easyer too see if it was glowing. the converter heats up and expands not letting the proper exhause to your muffler thats why it would run ok after it sit and cooled off. the metel cooled and shrank and the truck would run good till it was hott again.. i hope this helps

Jun 02, 2011 | Ford Ranger Cars & Trucks

1 Answer

Truck will only start on the 3rd try but runs fine

the heating coils( heating plugs) need to replaced

Nov 03, 2009 | Chevrolet 1500 Cars & Trucks

Not finding what you are looking for?
2002 Land Rover Discovery Series II Logo

89 people viewed this question

Ask a Question

Usually answered in minutes!

Top Land Rover Experts

Colin Stickland
Colin Stickland

Level 3 Expert

22219 Answers


Level 3 Expert

76649 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

8522 Answers

Are you a Land Rover Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides