Technical Heating System

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Technical Heating System

PILAR

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Can anybody shed any light on the following problem? I have a Fiat Punto N reg. (yes I know it's quite old) but I love it, and I have a problem with the heating system. It's blowing cold air and the temperature gauge seems to go up at the same time. The car it's not overheating as when here's no water in the radiator but it goes up.

Could any of you tell me if this could be a big problem? I'm getting quite frustraded at my local garage. !!!!! A Fiat dealer will be the last resort....

Thanks a lot

Pilar
 
Could it be a dreaded head gasket? (n) or is there an air-lock in the cooling system somewhere?
 
Mine has has this problem recently.

Seems to be losing water, but can't seem to find a leak, and heater doesn't seem to blow hot air anymore.

I drained and replaced the coolant about a month ago.
 
Try this:
Let everything cool down first, liquid, radiator etc. Find two bolt-taps: one on the left upper part of the radiator, and the second one behinf the engine, in the pipe passingto the passanger compartment.
Dont do with them anyhing for the moment.
Open the cooolant reservoir cap, and check that there is enough of liquid to cover the pipe which returns the liquid from the radiator (its inside the reservoir, take a look). The best is to to top it almost to to the max level. Now squeeze the upper black pipe going from the thermostat (engine) to the coolant reservoir (you have two of them, one is and one is down, both connected to the coolant reservoir). You should be hearing air coming outthrough the water, from little pipe in the coolant reservoir the Keep squeezing until you dont her air coming out anymore.
Second option is to unscrew the bolt-tap on the left part of the radiator, fil up the coolant reservoir to the max level, and blow into the coolant reservoir until you see water starts coming out from the bolt.
It is very importnat when you do this to make sure that litle pipe in the reservoir (you can see this pipe, its onthe left few inches below the resevoir cap) is submerged. Otherwise, with all these sqeueezing the the pipes you will suck in more air!
Do the same sqqueezing for the bottom pipe.
Turn the engine on, let it run to warm, set the heating to hot, unscrew a little bit with the screwdriver bolt on the back of the engine, just a liitlle bit because there will be a hot antifreeze blurping out into you if you unscrew it fully Let the antifreeze blurping out for a minute or so, and screw it againg. If yoy think its necessery, you can do this with the bolt on the radiator, always cautious of hot liquid coming onto you.
Keep your eye on the temp gauge of the engine, if goes to high shut the engine down.
That should be it. It worked for me in Bosnia, it should work for you there as wll.
Cheers
Halko
 
I seem to be having this problem at the moment. Turns out that I need a new water pump! Its leaking - no water going round = no heat in car plus it is overheating. Might be something to check.
 
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