Question about 2000 Daewoo Leganza

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2000 daewoo leganza overheating after hose was replaced, then still, after a new thermostat, so is it the radiator or heating core that needs to be replaced

The heater has "ran cold for a little part of one day recently, but when I put my hands over the radiator i can feel the driver side of it is way hotter than the left. So I'm stumped.

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  • 93 Answers

It sounds like the radiator. A reverse flush might clear up the blockage.

Posted on Jan 15, 2013

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Got similar problems: Pump bearings were very noisy so pump was replaced. (Which would have led to timing belt failure; VERY expensive.)
Thermostat replaced. Rad Cap (well, header tank cap) replaced.
I notice there are two fan relays but that the fans never go into Hi-Speed mode, even though the temp eventually gets to boiling point & the cap opens to relieve the pressure.
The sensor near the 'Stat I am sure is for the dashboard temp gauge. So, which sensor sends the appropiate signal to the Fan relays?
Next step is a reverse flush of the rad & heater matrix.

Posted on Jan 05, 2014

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Posted on Jan 02, 2017

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SOURCE: 2000 Daewoo Leganza heat gets just luke warm!!!

I have the same problem. we changed the thermastat. the engine coolant was full of muck and looked rusty like something was rusting away.we then back flushed the system including the heater core.It's alot better but we think the water pump propellers are rusting away. this sometimes happens. so we are keeping an eye on the temp to see if it is getting to hot or over heating if so the the water pump needs replacing. I would have the system back flushed to see if that helps you could be having the same problem I' having. Hope this helps.

Posted on Dec 10, 2008

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SOURCE: 2002 Daewoo Leganza help

It has a single din radio that can be purchased anywhere for under a hundred bucks. Check the antenna connection. Window regulators can be nought from Dr. auto parts. Go on ebay they go for about 40 bucks. Frank Kent Daewoo in Fort Worth Texas has the largest supply of Daewoo parts.
Good Luck

Posted on Jan 23, 2009

  • 242 Answers

SOURCE: 2000 daewoo leganza radiator fans not

there's a sensor on the radiator that tells the fan to come on a serten temp,replace that,there normally on the side,just release the clip and pull it out,make sure it cold before you remove it as the water will come out.

Posted on Dec 24, 2009

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SOURCE: I have a 2002 Daewoo Nubira. We have recently had

More than likely there is an air pocket in the cooling/heating system. If there is no vent hole valve that is in the high point of the cooling system then what you would want to do is remove the radiator cap (when cool) to avoid getting burned, park the vehicle slightly uphill and start the vehicle and let it run til the engine gets hot enough to open the thermostat and burp out the trapped air. Many of todays vehicles don't ever really get hot enough to burp out system or the pressure in the system is too high to allow the trapped air to escape, that is why you want to remove the radiator cap. Hope this helps. If it does please give me thumbs up. Good luck.

Posted on Jan 20, 2011

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2000 daewoo leganza is overheating, leaking anti freeze, and water. what is wrong?


sound like thermostat sticking close.replace thermostat and radiator pressure cap.if already done.you could have faulty water pump.if engine overheating at long slow traffic line or setting at a stand still.the engine cooling fans should be running, check and see if cooling fans running if not,check cooling fans fuses and relays.if all is good,hot wire make sure coolings fans okay.if all is good,code scan vechicle for faulty engine coolant temperature sensor and ecm problems.you need a code scanner where you can check live data check see if coolant temperature sensor reading correctly if engine coolant temperature is 190 degrees the coolant sensor. the scanner suppose to show 190 degrees in temperature if not it reads 80 or 90 degrees the engine coolant temperature sensor is faulty need replacing.if all is good check engine oil if look like milk shake blow head gasket will cause over heating.to be on the safe side i would replace thermostat and radiator pressure cap first.to make sure engine coolant circulating through radiator and engine block.

Nov 15, 2011 | 2000 Daewoo Leganza

3 Answers

Will not heat. I smell antifreeze inside. Thermostats been changed, new antifreeze added.


If you smell antifreeze in the cabin then it could be a hose loose or the heater core has a leak/pressure leak - in which case get it looked at ASAP because it could lead to overheating of the engine.

Check the hoses going to the heater core and make sure they are not cracked or disfigured and are on tight. Any moisture near or on the core (and/or corresponding corrosion) is an indication the hoses are ot doing there job or the core is leaking.

BTW, If you are loosing coolant (due to a faulty heater core) it could "explode" (relax, you are basically safe on the other side of the dash-board), but the result could be a destroyed heater core and a very expensive repair bill - I know because its happened to me!

Jan 05, 2010 | 2000 Daewoo Leganza

3 Answers

2000 Leganza no heat; heater core is not leaking; blower works


try and see if there is any bleed screws on the water system ie near thermostat housing or top hose sounds like you have an air lock in the water system if the blower is not getting warm

Dec 23, 2009 | 2000 Daewoo Leganza

1 Answer

2000 daewoo leganza overheating


replace thermostat.make sure coolant fan is working.also check coolant level.

Jul 10, 2009 | 2000 Daewoo Leganza

2 Answers

Car is running hot. Just got new hose put on and radiator flushed and themostat. What is the problem?


Check the availability of morte than one thermostat for your engine. You may have the wrong one in and it's not opening at the lowest setting. Causing the engine to overheat before it will allow the coolant to circulate properly. The other answer lies within the efficiency of your waterpump.

Jun 23, 2009 | 2000 Daewoo Leganza

1 Answer

No heat


first make sure the radiator is topped off or full also the overflow is at proper level .. feel the hoses going into the cars firewall to see if they are warm or hot. if cold then the car is not letting hot water into the heater core inside the car . there is a control outside the firewall that might be at fault .

Jan 25, 2009 | 2000 Daewoo Leganza

1 Answer

No heat


27th Nov 2007, 15:49 To the above comment: You can't have a 2003 Leganza, because Daewoo stopped selling cars in N. America after the 2002 model year.
A non-operating heater could result from a thermostat that is stuck open, keeping the engine from getting up to normal operating temperature; but if that was happening then you would probably have a check engine light on too.
More likely you have either a stuck or broken temperature control for the heater. Temperature controls are either cable-, or vacuum-operated. Find yours in the heater hose somewhere and see whether you can move the linkage on it. If that causes the heater to work, then you have found your problem. If not, then you may have a clogged heater core, which would probably mean replacement (much more expensive than a thermostat replacement, unfortunately).
Btw, your mechanic does not sound too interested in figuring out what the problem is.

Dec 04, 2008 | 2000 Daewoo Leganza

1 Answer

2000 Daewoo Leganza heat gets just luke warm!!!


I have the same problem. we changed the thermastat. the engine coolant was full of muck and looked rusty like something was rusting away.we then back flushed the system including the heater core.It's alot better but we think the water pump propellers are rusting away. this sometimes happens. so we are keeping an eye on the temp to see if it is getting to hot or over heating if so the the water pump needs replacing. I would have the system back flushed to see if that helps you could be having the same problem I' having. Hope this helps.

Nov 02, 2008 | 2000 Daewoo Leganza

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