Question about 2001 Land Rover Discovery Series II

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Engine over heating

Start engine and let it ideal temp got to 50% after 10 minutes. Vehicle was just at an ideal not under load. has new waterpump and water is well through all hoses top bottom. opened up air cockpit on upper hose to let extra air out.Drove the vehicle 3 mile over heated. At one point had the heat on high and the temp gauge stayed at 2/3 temp. turned off the heater system and that's when it jumped right up to boiler temp.

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The heater core is acting like a small radiator and is cooling the system when it is on. That means that the main radiator on the front is not working. You need to take the cap off and look inside to see if there are a lot of minerals or other deposits that are blocking the flow inside that radiator. If there is none, check the radiator fins on the outside of it and see if they are smashed flat or obstructed with dust, mud or other debris.

Posted on Mar 30, 2014


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Posted on Jan 02, 2017

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SOURCE: Land Rover Discovery 1996 3.9 V8i Cooling Problems

sounds to me like you have a blocked heater matrix or coolant radiator

Posted on Jul 22, 2009

  • 398 Answers

SOURCE: new thermostat,waterpump,coolant,block flushed rad

take the thermostat out and heat it up in a pan of water to see if it will open when it gets hot.
you should see it open when it gets hot.use a cooking thermometer to watch the temp. it should open between 180 and 225 deg.

Posted on Aug 04, 2009

  • 4044 Answers

SOURCE: 2002 Land Rover ~ Freelander - No heat coming from the heater

Look for two water lines about 1 in in diameter running back toward the condensor unit in the firewall. On one of those lines will be a control. It is sometimes vacum controlled. When they are vacum conrolled they have a tendency to get stuck or you may have lost vacum to the unit. You can use a vacum tester and short piece of hose to test this to see if you have lost vacum or if it is stuck closed. Connect the test hose to the control on teh hose and apply vacum to the unit. If the valve opens you will get heat in the vehicle. If it does not open then it is stuck in the closed position and will need to be replaced in most cases.

Posted on Sep 10, 2009

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SOURCE: Land Rover 3.9 V8i Cooling Problem

I have experienced a few radiators on both discoveries and series 2 range rovers being blocked causing overheating. Also might pay to check your fan hub when the engine is hot switch off and check how freely you can turn the fan

Posted on Sep 25, 2009

  • 3400 Answers

SOURCE: my 2005 land rover freeland over heats in egine

water bubbles in tank is normal. Rovers have a closed system, that onset an overflow bottle, it's a remote filler and you normally will see coolant circulating in tank. I'd be worried if I didn't see circulation.

Posted on Mar 24, 2011

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Hi there,

Firstly - DO NOT run engine, when guage reads hot, as this will cause costly damage to head gasket & alloy engine head.

The fact that guage takes 1min to read HOT, would confirm the guage IS working properly.

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"if this has helped you in any way, please rate this solution"

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I have an 06 impala and lately as soon as i start my car after an entire night of being parked my car gets to normal operating temperature within 2 minutes of being started. Then the temperature slowly...

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Waterpump not working?

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2004 Dodge Intrepid heater problem

This sounds like your automatic climate control is starting to malfunction. Check to make sure your coolant is full, and temp is not fluctuating, and when your vehicle is warmed up, try using the low setting and feel for air temp. Is it warmer than if you turn it up? When at idle the vehicle is not producing heat the same as if you are driving, putting load on your engine and more air/fuel combustion means more heat, which is why you can feel heat while driving. Ideally you should feel heat as soon as the engine is warming up, getting hotter as it reaches peak temp of 190-210 degrees. You can try to make sure your water control valve is not blocked, and all electrical connections are secure. This will be located close to your firewall and connected to the coolant tubes that run into your firewall to your heater-core. Also use recirc (setting)to try to summon as much heat as possible, however ultimately, you may need to take you vehicle in for service. If it only warms when driving defrost will be an issue. Good luck.

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3) Failed waterpump - solution - fit new waterpump
4) Engine thermostat stuck in closed position - solution - fit new thermostat
5) Electric cooling fan (if fitted) failing to operate - solution - check fan, fan operating switch, all wiring and connectors
6) Not enough coolant in system - solution - check and top up to required level. Also check all hoses for sign of leakage.
7) Faulty temperature gauge giving incorrect reading

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