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#1 01-12-07 21:55:39

infectedcat
Member
From: ASDA
Registered: 18-06-07
Posts: 202

AN ENGINE THATS UNCOOL :(

my car is over heating and a red stop light appears on the dash board i do not know why the car is over heating??


iv drained the water from the cooling system and it came out brown so i kinda thought no wonder the engine is overheating. i then added 50/50 water and anti freeze but this has not helped to cool down the engine i still get the red stop light.


iv checked the pipe that comes out of the reservoir and there seems to be no leaks coming from that area.



after driving for a few mins i stopped and lifted the bonnet, the engine was hot and i could hear air escaping from the cap where i refilled with coolant. the noise was a bit like when you shake a fizzy drink were the cap isn’t closed tightly and it makes a sort of hissing noise like air and water is trying to escape. the cap is on securely as iv followed the manual and it says push down on the cap and turn so i don’t understand why that could be happing?

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01-12-07 21:55:39

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Re: AN ENGINE THATS UNCOOL :(




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#2 01-12-07 22:30:42

adi
Verified Member
From: shropshire
Registered: 28-02-04
Posts: 1,231
Website

Re: AN ENGINE THATS UNCOOL :(

It's a pressurised system and if it's overheating the pressure will build up. Some caps are designed to release the pressure rather than the water forcing it's way out somewhere else.
There could be a number of reasons why your engine is doing this, i suggest you get a mechanic to look at it and don't drive it. If you really overheat your going to cause alot of damage.

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#3 02-12-07 00:33:03

keith-adi
Verified Member
From: wirral
Registered: 19-07-06
Posts: 830
Website

Re: AN ENGINE THATS UNCOOL :(

could be something as simple as a thermostat or  more comlex? get it looked at before you do real damage o/


We can all drive! some of us don't know it yet!     Smart Start School of Motoring
lessons available Wirral wide.

http://www.smartstart-wirral.com

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#4 02-12-07 11:20:39

Zipper
Verified Member
From: Darwin, Northern Territory Aus
Registered: 20-08-04
Posts: 2,690
Website

Re: AN ENGINE THATS UNCOOL :(

As Keith & Adi have said, an overheating motor must be attended to VERY quickly.
Especially if there's a leak because the hotter the coolant becomes, the quicker it's forced out of the hole.

It could be anything from a leak to a faulty thermostat to faulty electric radiator fan - but get a mechanic to look at it ASAP.


Zipper ("G'Day Mate!")
I'm not 65! I'm only $59.95+tax
www.drivingnt.com

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#5 02-12-07 12:04:39

DampDog
Verified Member
From: Staffordshire.
Registered: 04-02-06
Posts: 1,538

Re: AN ENGINE THATS UNCOOL :(

There aren't too many things that cause cars to overheat and most can be checked easily checked.

1. Most obvious, water level
2. Fan belt, some older cars still have the water pump driven by a belt, is it broken or to tensioned incorrectly?
3. Faulty thermostat, this is basically a valve that should open as the engine heats up, it allows water to flow through the radiator and be cooled.
4. Faulty cooling fan or fan switch, if the engine gets too hot the fan should switch on and blow cool air through the radiator.
5. Air lock, occasionally if the coolant is not replaced correctly this can cause an "air lock" and stops the water flowing round the system.
6. On older cars the radiator cam become blocked and simply not do it's job.

Important thing is not to drive it if you think it is overheating, as can cause seriously expensive damage to the engine. An experienced mechanic should be able to check that lot in 30mins.


ADI (car)
1st CT (5)

I used to be a compleat idiot, until some bits fell off...

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#6 02-12-07 21:53:47

infectedcat
Member
From: ASDA
Registered: 18-06-07
Posts: 202

Re: AN ENGINE THATS UNCOOL :(

iv checked for leaks and i cant see any. iv also burped the car so air trapped in the cooling system has been removed.

havent checked the belts yet. cant see a fan so cant comment on that.


there is one thing i did come across, the oil and it was below the min mark. i only topped it up 2 weeks ago so i thought that area was ok. looks like i will have to check the oil every week now.

iv changed the coolant and topped up the oil.i will see what happens in the next day or so.


what about the air that passes through the air filter does this have anything to do with cooling the engine down?
if so it may need cleaning or even a new one??

thanx for the help

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#7 03-12-07 08:51:19

adi
Verified Member
From: shropshire
Registered: 28-02-04
Posts: 1,231
Website

Re: AN ENGINE THATS UNCOOL :(

How old is your car? Petrol or diesel?
When you say you have changed the coolant, did you completely empty the system, refill via radiator (depending on the height levels of pipework, rad, expansion tank etc), cap off then fill via the expansion tank? Squeezing pipes to flush out air locks won't do the job.
When you remove the oil fill cap or remove the dipstick is there a 'white cream' visible? If so you might have water leaking into oil or vice versa.
My advice is to go to a mechanic and get them to look at it but ask to watch and learn what is wrong and how they check certain items on your car, the more you mess the more harm you might do by actually creating new problems which might make identification of the original problem harder to trace.

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#8 09-12-07 10:51:41

kaf
Verified Member
From: Wiltshire
Registered: 05-08-07
Posts: 3,324
Website

Re: AN ENGINE THATS UNCOOL :(

Get it checked quickly.

If the cooling system is becoming overpressurised it could indicate a leak in the head gasket.

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#9 09-12-07 11:56:35

Dimmy
Guest

Re: AN ENGINE THATS UNCOOL :(

I'd try contacting a perfect mechanic, only they would be good enough to correct the fault.


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#10 09-12-07 17:11:11

Luchell
Verified Member
From: Salisbury
Registered: 12-06-07
Posts: 1,661

Re: AN ENGINE THATS UNCOOL :(

lol lol tongue

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