I have a 2000 Leganza with auto trans and 125000 miles on it. For the last few months the car takes several miles to warm up to the point where it will shift into overdrive, after which it shifts fine. I have also lost almost all heat. The A/C works fine, but even after a thirty minute drive, the heat coming out of the ducts is BARELY above the ambient temperature outside. The temp gauge never reads above the 3/8 mark when warm even though I know the coolant is borderline overheating when I have checked it.
I have ordered a thermostat from AutoZone but am kinda clueless as to where to procede next. This car still has a lot of life left in it and I'd like to keep it on the road for another 50,000 miles. Any suggestions on what to check or replace next? Thanks.
2000 Leganza not warming up
Moderators: daewoomofo, Moderators Group
I'm not a mechanic but I am sure some of the pros on here will chime in and help. Certainly sounds like a thermostat to me. Look around on the site and you may find some instruictions and pictures from someone that has done the job already. these guys are great with helping and showing pictures to get you going. good luck
Check coolant level first.
Starting from cold with engine running feel temperature at upper radiator's big hose. If temp rises slowly your thermostat is prolly stuck open. If temp rises suddenly (after some minutes) thermostat is prolly OK.
If you can reach the two hoses (side by side) on the firewall going to the heater core they should warm up well prior the radiator hose.
Take care with running belt/pulley.
What kind of airco? Auto? Manual?
Daniel
Starting from cold with engine running feel temperature at upper radiator's big hose. If temp rises slowly your thermostat is prolly stuck open. If temp rises suddenly (after some minutes) thermostat is prolly OK.
If you can reach the two hoses (side by side) on the firewall going to the heater core they should warm up well prior the radiator hose.
Take care with running belt/pulley.
What kind of airco? Auto? Manual?
Daniel
Drain and dispose coolant. There is a drain plug at bottom of radiator. Change thermostat and Oring. Pour fresh coolant.dutch552 wrote:Manual A/C. I just fired it up after sitting all night. The upper radiator hose gadually gets warm.
Should you need a service manual look in the FAQ section http://www.daewootech.com/forum/viewtopic.php?t=5085 .
Daniel
Changed out the thermostat and instantly the heat was back on in the car and the car shifted appropriately.
However, while changing the thermostat out I noticed that the coolant is in bad shape and I need to flush the system and change a hose with a crack. I already have a bottle of cooling sytem flush in the garage and get the gist of how to do the flush but I can't seem to figure out how to remove the drain plug on radiator of this car. What tool(s) do I need to remove the plug? It looks like there is a rubber grommet of some sort where the drain in.
However, while changing the thermostat out I noticed that the coolant is in bad shape and I need to flush the system and change a hose with a crack. I already have a bottle of cooling sytem flush in the garage and get the gist of how to do the flush but I can't seem to figure out how to remove the drain plug on radiator of this car. What tool(s) do I need to remove the plug? It looks like there is a rubber grommet of some sort where the drain in.
Glad you sorted your problem. Good idea to flush old coolant.
I've always removed the drain plug by hand. It's a plastic wing screw that can be sticky first time.
Daniel
I've always removed the drain plug by hand. It's a plastic wing screw that can be sticky first time.
[/quote]From service manual:
DRAINING AND REFILLING THE
COOLING SYSTEM
CAUTION : To prevent personal injury, do not remove
the surge tank cap while the engine and the radiator
are hot. Scalding fluid and steam may be blown out
under pressure.
1. Place a pan below the vehicle to catch the draining
coolant.
2. Remove the surge tank cap.
3. Unplug the drain plug.
CAUTION : To prevent personal injury and to protect
the environment, dispose of the used coolant in a
used coolant holding tank to be picked up with the
used oil for disposal. Never pour the used coolant
down the drain. Ethylene glycol antifreeze is an extremely
toxic chemical. Disposing of it into the sewer
system or the ground water can contaminate the local
environment.
4. Catch the escaping fluid in a drain pan.
5. Remove all sludge and dirt from inside the surge
tank. Refer to ”Surge Tank” in this section.
6. Screw in the drain plug.
7. Add clean water to the surge tank.
8. Fill the tank slowly so that the upper reservoir hose
remains above the water line. This allows the air
in–side the cooling system to escape.
9. Start the engine.
10. Run the engine until the thermostat opens. The
thermostat is open when both radiator hoses are
hot to the touch.
11. Stop the engine.
12. Repeat steps 1 through 9 until the drained water is
clear and free of coolant and rust.
Notice : Never use an antifreeze mixture more concentrated
than 60 percent antifreeze to 40 percent water. The
solution freezing point increases above this concentration.
13. Fill the cooling system through the surge tank with
a mixture of ethylene glycol antifreeze and water.
The mixture must be at least 50 percent antifreeze,
but not more than 60 percent antifreeze.
14. Fill the surge tank to the specified MAX fill mark on
the outside of the tank.
Daniel