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2001 Disco II Running Hot

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  #1  
Old 04-05-2018, 09:04 PM
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Default 2001 Disco II Running Hot

My '01 Disco II heated up the other day and popped one of the hoses off. Started with the thermostat, still got hot. Ordered a Water pump from Atlantic British and swapped that out today. Still doing the same thing.
What's next in the engine cooling list of things to check?
 
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Old 04-05-2018, 09:43 PM
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How hot is “hot”?
are you using a real time obd2 reader to monitor the engine temp?

if you’re relying on the gauge it doesn’t start moving upwards until 240 degrees. Way too hot.

if you are sure your system has no air pockets in it and it’s still running hot, thermostat, viscous fan, water pump, radiator

if the viscous fan is good and a temperature gun shows the radiator doesn’t appear blocked, I’d also do a test for combustion gases in the coolant and a cooling system pressure test to eliminate a blown head gasket.

 
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Old 04-05-2018, 09:52 PM
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The dummy gauge gets to the middle while idling and then when I take it around the block it is running all the way up and the red light is coming on.
 
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Old 04-06-2018, 08:44 AM
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Replacing the fan clutch.
 
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Old 04-07-2018, 08:20 AM
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If that red light is coming on it is WAY to hot. Probably needs a HG job, new radiator, and a 180F thermostat.
 
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Old 04-07-2018, 05:13 PM
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Yep, everything has been replaced except the radiator and it's doing the same thing. Guess that's next.
 
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Old 04-12-2018, 04:40 PM
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Alrighty, replaced the radiator and it's doing the same thing.

Next on the list?

Replaced thermostat, fan clutch, water pump, and radiator.
 
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Old 04-12-2018, 04:59 PM
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Are you absolutely sure you got the air pocket out? I’d rent the block tester and check for exhaust gases in the coolant next. What does the reservoir smell like?
 
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Old 04-12-2018, 05:16 PM
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Reservoir smells like coolant.

What's the technique for getting the air pocket out?
 
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Old 04-13-2018, 03:52 PM
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I fill the system, run it up to 195F shut it off, let it cool down, open bleeder, fill thru bleeder, top off reservoir, and repeat one more time. Others park on an incline and run it, and then open bleeder, top off, and repeat.
 


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