LINC lsv8 00 disconnect hoses from heater core would that be a temporary fix for heat valve problem.ac cool on Left side warm on right side

Some early cars have what is referred to as a hot water valve under the hood . It is hooked in one of the heater hoses , the supply side . The other hose is the return side , once the hot coolant goes through the heater core it goes back to the engine to get heated up again. This hot water valve is operated by engine vacuum. If you look at the fire wall or bulkhead , you should see two hoses going into the inside of the vehicle. those are the heater hoses. look for the valve on one of them. If you vehicle doesn't have one of this valves , you possibly have a mode or blend door problem . Does you car have Electronic Automatic Temperature Control or manual A/C-heater system ? The heater blower does work , all speeds ?

you may have a clogged heater core or heater core bypass valve may be stuck closed. bypass valve is usually on the firewall on one of the heater core hoses. if valve seems to be operating properly. you will need to let the vehicle cool down. disconnect both heater hoses. connect garden hose to one side of heater core let water run through one side and then the other side. if the heater core is too clogged it may need to be replaced.

2000-2005 Heater Core Replacement Instructions REMOVAL PROCEDURE

TOOLS REQUIRED
J 38185 Spring Hose Clamp Pliers

1. Drain the cooling system. Refer to Draining and Filling Cooling System in Cooling System.
2. Remove the fuel injector sight shield.
3. Position the J 38185 in order to remove the heater hose clamps.
4. Remove the heater hoses from the heater core.
5. Remove the left side sound insulator.
6. Remove the right side sound insulator.
7. Remove the air distributor duct screws (1,2). Due to the difficulty in the removal of the right side screw (2), it will not be necessary to install upon reassembly.
8. Remove the air distributor duct.
9. Remove the heater core heat shield screws.
10. Remove the heater core heat shield.
11. Remove the heater core cover screws (1).
12. Remove the heater core cover.
13. Remove the retaining screw and strap from the heater core.
14. Remove the heater core.


INSTALLATION PROCEDURE
NOTE: Refer to Fastener Notice in Service Precautions.

1. Install the heater core into the HVAC module using the attaching straps and screws. Tighten Tighten the screw to 1.4 N.m (12 lb in) .
2. Install the heater core cover.
3. Ensuring the seals at the front of dash are in the proper positions, install the heater core cover screws. Tighten Tighten the screws to 1.4 N.m (12 lb in) .
4. Install the heater core heat shield and screws (1). Tighten Tighten the screws to 1.4 N.m (12 lb in) .
5. Install the air distributor duct and the left screw (1). Ensure the right tab is seated properly. Tighten Tighten the screw to 1.4 N.m (12 lb in) .
6. Install the left side sound insulator.
7. Install the right side sound insulator.
8. Install the heater hoses and clamps using the J 38185.
9. Install the fuel injector sight shield.
10. Fill the cooling system. Refer to Draining and Filling Cooling System in Cooling System.

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It sounds like you probably have a leak in your heater core. Replacing a heater core can be a difficult job. If you decide want to try it I suggest you get a shop manual to help you out. I can give you a relatively easy temporary fix that will stop the leak until you have more time to fix it or you can take it into a shop to have it done. The down side is this fix will temporally disable your heater. Wait for the engine to cool. Open the engine compartment and look all the way in the back between the engine and the firewall. Find the 2 heater hoses that pass through the firewall. They should be about 1 inch in diameter. Undo the hose clamps and disconnect them from the firewall. Get a short piece of metal tubing about the thickness of the inner diameter of the hoses. Use this metal tubing to connect the heater hoses together and clamp them using the two hose clamps. Now the antifreeze that would normally circulate through your heater core will instead circulate through this loop and not enter the passenger compartment. If you can't find a short piece of metal tubing to do this fix you can completely remove one of the heater hoses. Then take the other heater hose and connect it to location near the engine where you disconnected the first hose. Save the first hose so you can hook it up later when you do the more permanent fix. Make sure to position all hoses such that they aren't resting on any hot surfaces. I hope this advice helps you out.

No heat = no motion. If there is no heat in your car there is no molecular motion (no molecular bond) and the world as you know it will literally fall apart. Won't even be elements left, just random neutrons being pounded by protons and electrons colliding at an alarming rate.
Assuming you mean that your A/C works fine and the only problem is the air being blown out is not warm as it should be on heat, could be a couple of things.
Valve not sending coolant to heater core. To check this just warm the car up, turn on the heater, and pop the hood. Find where the heater core hoses connect at the firewall. Feel each side (in and out), they should both be very warm. If not very warm, your heater core is not getting any heated water to share with you in the cabin. Follow the hoses from the firewall to wherever they go. If there is a device connected inline, feel both sides of it. If the 'other' side is hot, the valve isn't turning on. This is what you hope the problem is, cheap and easy.
Blend door not operating properly. This is the flapper door within your heater/AC box that puts air through the heater core or the AC core. Checking or fixing it means removing the dash, which isn't any fun. Hope it's the valve above.


good luck

the inlet to your heater core is dead center of your firewall and 7 inches down. There will be two hoses. The inlet hose is on the right as your facing it. About 8 to 10 inches before the firewall as you follow the inlet hose back towards the engine, there is an inline valve with two wires attached to the top. This valve opens when heat is called for, and allows flow through the heater core. This valve is known for sticking shut. To check it, get the engine warm, turn on your heater, and feel the hose on bolth sides of the inline valve. If its hot on bolth sides you're valves ok. You can also check your flow through your heater core by feeling the outlet hose to the left of the inlet hose. If thats hot your heater core is most likely ok. I have the same car and have a problem with the heater not getting hot. My heater core checks out ok. I think the problem is with the blendor door not directing airflow through the heater core. GOOD TIMES!!!

THERE IS NO HEATER CONTROL VALVE ON THE WATER HOSES. NEW HEATER CORE. INLET LINE right before heater core hot, outlet after core look warm. Burped cooling system 5 times with engine at operating temp. Installed homade burp VALVE right after heater core outlet(high part of hose). Still no heat. Removed water pump, impeller still in good shape not stripped off shaft. Removed heater core hoses flushed water thrue the connections on the block to the water pump INLET and outlet. flushed water thrue heater core and hoses. Going to put it back togeter today. Used known good gauge to check water temp for operating temp in test. 195 f

Your heater core is clogged. You can fix it. Disconnect the two heater hoses and put one into a bucket. Use an air compressor to blow into the other - it'll flush the contents into the bucket. Then reverse it - put the hose you blew into, in the bucket, and blow into the one that was in the bucket. This way, whichever side of the core had the clog, you can blow it out. Reconnect the heater hoses, and then burp the system or you can end up with air bubbles in the cooling system that can cause you to overheat. Click my screenname, go to Tips and Tricks, and follow the procedure there - it'll walk you through the whole procedure step by step.

Start searching for a vacuum leak. The dash switch operates a vacuum assembly - but if the line is cracked, it "door" will not change position.

Your heater core has corroded through. You need a new heater core. You may be able to get by temporarily, with bypassing the heater core hoses, located in the engine compartment. These hoses carry coolant heated from the engine, to the heater core. You remove the hoses from the core, and put a pipe in the middle, connecting the two hoses together using hose clamps.

Should there be a cool morning, or if you need the defroster, you won't have warm air. Just a temporary fix.