Question about 2000 Jaguar S-Type

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2000 s type jagure heater doesnt work

Turn to auto and set temp at max 85 deg. it will only blow cold air. radiator is full.

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  • Anonymous Dec 18, 2008


    • COLD AIR STILLS COMES OUT POSSIABLE VALVE IN SIDE NOT LETTING WARM AIR OUT

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I had the same problem and it was due to a tiny tiny crack in my resevior. my radiator was full too. I had a new resevior installed and now everything is perfect.

Posted on Dec 16, 2008

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Heater doesnt work


To troubleshoot this types of problem,click the link below :---
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This will help.Thanks.

Mar 27, 2012 | 1994 Volvo 960

1 Answer

I have a 2000 Dodge Ram 1500 that will blow cold and hot air for only a few minutes. After that is only ambient air temps. It is a 5.7 ltr, automatic with only one set of climate controls. The heater core...


you say it will blow cold and hot air for only a few minutes. You don't say but I assume you mean will blow cold a few min. when turned on AC max , blow hot only a few min. when turned to heater hot. Assuming thats the situation and you say AC charged and shows good on the low side -you should charge the AC to a full charge on the low side will cause problems with the AC air compressor kicking on and off. I suggest while the engine is running and turned to AC cold max watch the AC air compressor clutch to see if it does indeed kick on and off if so charge completely. As far as the heater make certain you coolant is all the way to the top and the best way to do this is when engine is completely cold remove radiator cap and fill completely and completely close cap then fill overflow container just to the cold level. That should fix your problem.

Sep 06, 2011 | 2001 Dodge Ram 1500 Truck 2WD

1 Answer

2000 Jaguar S type 3.0 Blows only cold air on full heat. Just replaced heater control valve with no change. Also flushed and replaced thermostat. Car operating temperaure is fine. Both heater hoses are...


Check the little pump below the brake booster for running and the coolant valve for movement.

Both hoses to fire wall should be hot.

Check for air lock in system.

Blend doors on this vehicle stop working....common complaint.

To verify Blend door movement, turn on ignition with engine off.

Run temp to max and the min..... listen under glove box for ( sliding ) motor noise as door swings from hot to cold.

This is a digital system needing a Jaguar scanner for diagnosis.

Jan 16, 2011 | 2000 Jaguar S-Type

2 Answers

The heater only blows cold air,the radiator is full,thermastat is working and the engine temp is within normal ranges.


I've had this problem. 2000 GMC uses a closed coolant system. Meaning takes and returns coolant from and to the Reserve Bottle and has little air in the engine and heater systems.
If everything appears ok but no heat. "Air Lock" is the most likely cause. (With interior heater set to full heat) Solution; 1. Make sure water pump works. 2. Drain about 1/2 engine coolant into container. 3 Remove both heater hoses from engine side and flush heater core in both directs through heater hoses with garden hose. 4. Reattach heater hoses in correct locations. 4. Refill engine with coolant. 5 Start engine and run for 2 min., use caution when topping up coolant.
6. Most 2000 GMC have twist off caps with plugs located mid way on heater hoses. with engine cold, start engine these caps may be loosened to allow trapped air to escape. Do not attempt with engine hot due to hot coolant injuries. This may take more than one attempt to remove all air from heat system. 7. Lastly most 2000 GMC water pumps have a bleeder plug,( 3/8" square driver plug) located on the water pump. With egine cold this plug should be removed to remove any air. Reinstall plug with thread sealant.
Hope this helps cheers

Dec 09, 2010 | 2000 GMC Jimmy

3 Answers

My S-type heater is not working. Blowing only cold air. Also, The temp gage goes from cold to max hot within five minutes of starting the car. Any ideas would be appreciated


Hi There
I have had the same problem, if the climate control shows different temps at either side it most possible that the heater valve needs replacing, the valves inside get rusty and sieze up, it is situated at the front o/s at the side of the radiator. If temps are the same could be the control module

Jan 14, 2010 | 2000 Jaguar S-Type

1 Answer

Temperature/heat wont work/dashboard lights on and off


It sounds to me like you're low on coolant. When you checked the coolant level, did you actually open the radiator cap and make sure the radiator is full? The plastic tank you generally add coolant too is actually an 'overflow' or 'reserve' tank. There is a hose that runs from that tank to the top of the radiator so if the radiator gets low on coolant, more coolant -should- run in from the overflow tank. However in practice this does not always work. I have a Jeep that leaks coolant and experiences this exact same problem. Coolant will not run from the reserve tank into the radiator because the hose is plugged up, and whenever the radiator gets low on coolant the temp gauge will go real high and then drop, and the heater doesn't work well. This is because the cooling system of your car is supposed to be a closed system, full of coolant and no air. When coolant leaks out, the space it used to occupy is now occupied by air, which does not transfer heat well. When 'air' is passing through your cooling system, no heat can be transferred from your engine to the heater and radiator, resulting in a hot engine and no heat at the heater. Then when a pocket of water passes through the system, the temperature gauge quickly falls as the water absorbs the heat from the engine. The hot water that cools the engine is where the heater gets it's heat from as well, so when water passes through the heater core, the heater works, but when it's filled with air, it doesn't.

Feb 12, 2009 | 2001 Pontiac Sunfire

1 Answer

Temperature Control not working on 1999 Ford Explorer


Sounds like your temperature actuator is not moving or your temp door is broken. On max a-c ,coolant is shut off to your heater core allowing only cold air in.

Jan 16, 2009 | 1999 Ford Explorer

1 Answer

Cooling & heating?


as a test, restrict a good portion of front of radiator with cardboard. is the engine running at 195 degrees? if engine temp is good, verify that both heater hoses going to heater core are hot. maybe heater control valve.

Dec 05, 2008 | 1989 Ford F 250

1 Answer

Heater only blows hot (well, warm) on full speed of fan


Replace the temp control on this car, it should be electrical control not cables.

Dec 03, 2008 | 2000 Ford Escort

1 Answer

2000 Chevy Silverado 4X4 - Heater isn't blowing hot air


No your thermostat is stuck open which will not hurt the engine. but needs to be replaced, the thermostat is what allows the engine get up to operating temp. before allowing water to flow through the radiator and when it is stuck open it doesnt allow the engine to reach operating temp. so the heater never gets hot. I hope that helps you out.

Nov 24, 2008 | 2004 Chevrolet Silverado

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