Heater I have a 300d from 93/94 and the heater has stopped working - there dosent seem to be any water leaking from it and i checked the expanstion bottle for water and its full so I don't think its a leek or a cracked heater matrix - could you please help - . Thanks Bruce

check for leaks, put fresh water/coolant into the radiator and overflow bottle after the engine and radiator has cooled so you don't get burned. hopefully the car will restart. remember that you can cool a car that is starting to overheat by running the heater in a pinch. It's not a fix, but an emergency measure.

Is the coolant bottle actually leaking or do you have a more severe problem? I would start by looking on the ground underneath your vehicle underneath the engine. If its coming from the front look at your radiator first, then your hoses upper and lower then your water pump and finally your heater hoses. If you cant see a leak start the car and let it warm up so your system has pressure to it. Then take a look and please dont stick your hand anywhere around the engine while it is running. Last place to look is feel the rug on the passenger side of the car to see if the rug is wet that would lead to a faulty heater core. If your handy with tools call around to your local auto parts store or tool rental places to see if they have a pressure tester. You can then pressurise your system with this tool and it should help you to find the leak.

I hope this helps you out, and if so please leave me a rating.

U can flush out the heater core by removing the heater hoses at the engine side and flushing clean water through both hoses.stop leak is junk,i would not advise using it,your right all it does is block the heater core.

If the radiator is leaking, put a bottle of radiator stop leak in it,fill it up the rest of the way with water, tighten cap, and run in idle for 15 to 30 minutes. If the leak is severe or one bottle doesn't work, use two bottles of stop leak and run for 35 minutes.

If it's the radiator cap that's leaking, replace the cap with a new one. Also check to make sure there are no loose cooling hoses.

Safety first: Use extreme caution to never remove the radiator cap when the engine is hot, severe burns from escaping hot water could result.

I have a 1997 Toyota Camry. Water was collecting on the front PASSENGER floor after a rain. I opened my sunroof and found the front drainage holes (about 1/8" diameter) in the corners of the track sunroof track. They looked clear. I poured a bottle of water in track and watched the result. Sure enough, water started dripping from the right ride of the glove box on to the floor. I started tearing out the interior panels to trace the leak. What I found is that if I poured the bottle of water REALLY slow into the sunroof hole = no leaks. But if I pour it too fast the small 1/8" hole cannot keep up and the track overflows! THAT is where the leak comes from in my car! If water overflows the track, then it makes its way down the column trim, around the glove box and on to the floor.

So I need to help the 1/8" sunroof hole drain faster. I took some 18AWG TFFN electrical wire and jammed it into the hole to help clean it out. I then removed the black plastic mud flap behind my front tire and blew out all of the leaves and rotted debris that where behind that flap. It was packed with junk! I poured more into the 1/8" hole and it seemed to drain quicker.

I hope this information helps others.

Does it have to do with the AC. I had a similar problem with my vitara and they said a washer was prob loose in the ac system which would cause the water to leak to the footwell. Mine was only the passenger side.

If you cant see any water coming out anywhere then the only choice is a blown head gasket.

The reason the resorvior had a leak was the pressure from the engine got into the coolant and blew up the reservior bottle. This is a real common problem with saturns.

Get the car inspected. A simple test a a reapir shop will confirm this.

Be sure to flush all the stop leak out or it will clog the heater core up and the heater will not work.

IT SOUNDS TO ME THERE MAY BE AIR IN THE SYSTEM STOPPING WATER CIRCULATING ROUND THE HEATER MATRIX,TRY TAKING THE CAP OFF THE RAD TOP UP BOTTLE(when cold)WITH HEATER CONTROL ON HOT ,THEN RUN ENGINE UNTILL WATER IS HOT.REPLACE CAP AND TRY HEATER.

toyota ed is on the money mate you got a leaking heater core and it is a ***** to change recommend you go to a mechanic to do it properly, sooner the better as you can damage your engine if it keep getting low on water

need diagram oif pipe ley out for expanstion bottle
on subaru l reg wrx