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Discussion Starter #1
my friend is selling his e46 and i am gonna buy it.
the only problem it has is that the heater doenst work.
i dont really know more about the problem.. is there anything obvious i can check ? is there common faults with this model ?

any help is greatly appreciated.

Chris
 

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sounds like an airlock-I'd be wary cause an airlock can cause the car to overheat and lead to other problems-Has he said anything about this?Hopefully it may just need bleeding though

How to bleed the cooling system.
1.Jack the front of the vehicle up onto stands as high as possible,
2.Turn the ignition on to Aux 2, Engine OFF, heater on fan setting 1 and temperature fully hot,
3.Remove the rad cap/expansion cap,remove the bleed screw from the radiator and IF you have them the bleed screw(s) from the thermostat housing/top hose, return pipe or EGR thermostat.
4.Fill the radiator/expansion tank up and keep pouring till there are no more air bubbles coming out from the bleeds, using a funnel that fits tight in the expansion tank neck and filling it full of water will help push any troublesome air out, when good you can then install the bleeds and tighten down(don't snap them),ensure the rubber O-rings/seals are still on the screws/on the bleed holes.
5.Suck some water out so it's not full to the brim, start the car up and check coolant shoots out of the small hole on the inside of the expansion tank neck when the revs are held up, if it does then replace the cap and then run the car up and check for heat from the vents when the car is warm, then carry on and check if over heating still persists. You may have to bleed troublesome cars again afterwards.(but very rare).
6.If all is good then check the water level again in the morning when cool.

or

Ignition on, heater set to hot, bleed screw out.
Pull the top hose off the radiator. Pour coolant SLOWLY down the rad hose a litre at a time. When the coolant is building up in the hose, hold it above the level of the rad hose stub and keep adding it. When coolant starts to dribble from the rad, refit the hose. You may find that coolant starts to overflow from the rad cap orifice - if it does, just screw the cap back on. Once you've done that, the engine and radiator are full of coolant - the little air pockets that might be left will come through the bleed screw.

After the vehicle is bled you should check that when the revs are held up you get a flow of coolant shooting out of the hole in the inside of the expansion tank neck, this will help tell you if the water pump is circulating, then run the car up and check the lower radiator hose gets hot. You could also get a "block test" performed to tell you whether the headgasket has gone.
 

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Discussion Starter #3
bloody hell lol i was just expecting to change a fuse or summin lol .. thanks for the fast reply i will speak with him and check what you said. is that all it could be ? or could it be anything else ??
 

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well I would be asking if it has been overheating ie needle going into the red as this is a cause for HG failure.......Check the oil filler cap and the dipstick for lots of mayo and have a look at the coolant for any oil in it.If you want you could do a block test too :thumbsup
 

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Without knowing if the heater is even blowing at all then we are as much in the dark as you. :thumbsup

You need to find out exactly what is or isn't happening then post it up here, otherwise we are stuck. :)
 

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