Discovery 2 Overheating
Pro Wrench
Joined: Oct 2011
Posts: 1,709
Likes: 137
From: NE PA
Quick update for other forum readers:
I called both Rovers North and Lucky8LLC to get pricing for the low temp thermostat and radiator fan for my 2003 D2.
RN quoted $69.95 for the original LR 180 degree thermostat PEL500110 while Lucky quoted same but with free shipping.
RN quoted $530 for the original radiator clutch/fan combo unit while Lucky quoted only $350. Big difference on this one.
RN also provided very sound tech advice. Greg confirmed definitely replace the thermostat and steps on how to replace it. And also how to test if the fan is working correctly (or not).
To replace thermostat:
1. Go to RN website and there is a Cooling & Heating schematic for the model of your vehicle.
2. Locate the thermostat and disconnect the 3 hoses from it.
3. Make sure you collect the coolant that will pour out and dispose properly.
4. Install new 180 degree thermostat by discarding factory hose clamps and replacing them with better worm clamps.
5. Fill with pink coolant.
6. Bleed system by raising coolant reservoir tank and opening bleed screw located on the T hose on top of radiator. When solid stream of coolant comes out then air is purged from system.
7. Top system off with coolant.
To check radiator fan:
1. Drive vehicle around and bring up to operating temp
2. Shut off engine. Try to spin the radiator fan. If it spins freely, then there's a problem. If the fan is stiff, then fan is likely working correctly
Will post with further updates
Thanks
Al
I called both Rovers North and Lucky8LLC to get pricing for the low temp thermostat and radiator fan for my 2003 D2.
RN quoted $69.95 for the original LR 180 degree thermostat PEL500110 while Lucky quoted same but with free shipping.
RN quoted $530 for the original radiator clutch/fan combo unit while Lucky quoted only $350. Big difference on this one.
RN also provided very sound tech advice. Greg confirmed definitely replace the thermostat and steps on how to replace it. And also how to test if the fan is working correctly (or not).
To replace thermostat:
1. Go to RN website and there is a Cooling & Heating schematic for the model of your vehicle.
2. Locate the thermostat and disconnect the 3 hoses from it.
3. Make sure you collect the coolant that will pour out and dispose properly.
4. Install new 180 degree thermostat by discarding factory hose clamps and replacing them with better worm clamps.
5. Fill with pink coolant.
6. Bleed system by raising coolant reservoir tank and opening bleed screw located on the T hose on top of radiator. When solid stream of coolant comes out then air is purged from system.
7. Top system off with coolant.
To check radiator fan:
1. Drive vehicle around and bring up to operating temp
2. Shut off engine. Try to spin the radiator fan. If it spins freely, then there's a problem. If the fan is stiff, then fan is likely working correctly
Will post with further updates
Thanks
Al
The only problem with the instructions is number 6. All the air may not be out yet...
Thread Starter
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Mudding
Joined: Sep 2012
Posts: 216
Likes: 7
D2 Overheating
Before replacing the thermostat, have a few questions:
1. Putting costs aside, is there any efficiency gained by replacing multiple parts while you're at it?
2. For example, should I do a radiator flush while replacing the thermostat?
3. Or if I'm replacing the radiator, should I do the viscous fan as well?
4. Is there an optimum sequence to follow to replacing these parts?
Thanks
1. Putting costs aside, is there any efficiency gained by replacing multiple parts while you're at it?
2. For example, should I do a radiator flush while replacing the thermostat?
3. Or if I'm replacing the radiator, should I do the viscous fan as well?
4. Is there an optimum sequence to follow to replacing these parts?
Thanks
Baja
Joined: Feb 2011
Posts: 9,298
Likes: 318
From: Boston Strong
it would not hurt to flush the radiator if you are replacing the t-stat, certainly would not want to do it with the new stat in place.
The only thing I would say is if I were changing a water pump i would inspect/replace the viscous fan at the same time.
The only thing I would say is if I were changing a water pump i would inspect/replace the viscous fan at the same time.
TReK
Joined: Mar 2012
Posts: 3,171
Likes: 45
Discovery Overheating..
Reminds me of this
http://www.northcoastbrewing.com/pdf...utin-Float.pdf
You'll need this to calm your nerves.
Reminds me of antifreeze blowing out my coolant bottle tank.
Reminds me of this
http://www.northcoastbrewing.com/pdf...utin-Float.pdf
You'll need this to calm your nerves.
Reminds me of antifreeze blowing out my coolant bottle tank.
Thread Starter
|
Mudding
Joined: Sep 2012
Posts: 216
Likes: 7
D2 Overheating
Update on this issue:
I had my mechanic first to a radiator flush and then replace the coolant thermostat to the original LR part PEL500110 purchased from Lucky8LLC for $70.00
The mechanic wasn't too excited that I asked him to install a customer provided part. He as planning to install the white thermostat. But I insisted on the gray thermostat which is what all the forum members recommended.
I've been driving the vehicle for two days now and the temperature never goes above 190 degrees F. It appears this resolved the issue.
Until then.... thank you very much to everyone who responded to my post!
Regards
Al
I had my mechanic first to a radiator flush and then replace the coolant thermostat to the original LR part PEL500110 purchased from Lucky8LLC for $70.00
The mechanic wasn't too excited that I asked him to install a customer provided part. He as planning to install the white thermostat. But I insisted on the gray thermostat which is what all the forum members recommended.
I've been driving the vehicle for two days now and the temperature never goes above 190 degrees F. It appears this resolved the issue.
Until then.... thank you very much to everyone who responded to my post!
Regards
Al
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