My car is over heating BIG TIME!!!! HELP!!!

[mikey_b]

Hi folks well i was driving along and all a sudden the temp rised from 90 degrees to 100+ degrees then i parked up and switched engine off...
i checked the top radiator pipe it was hot as it had water flowing through it when i checked the pipe coming from the bottom it was cold like there was no water init...im confused!! Is there a way to bleed the radiator or any ideas!!!

Thanks

 

[meltonlad]

mate when you stop but leave the engine running does the temp drop ?? if so soulds like ya water pump.... ive just had the same and now im looking at over £950 in repairs.....

 

[mikey_b]

mate when you stop but leave the engine running does the temp drop ?? if so soulds like ya water pump.... ive just had the same and now im looking at over £950 in repairs.....

no mate temp just wants to rise and the bottom pipe is still cold!!!

 

[meltonlad]

mine was doing the same top hose red hot and bottom hose cold but i did find that my thermostat was fooked so i changed that but my water pump was fooked and may have done the HG in aswell. when its hot/over heating is the water in the expansion bottle boiling away ???

 

[mikey_b]

mine was doing the same top hose red hot and bottom hose cold but i did find that my thermostat was fooked so i changed that but my water pump was fooked and may have done the HG in aswell. when its hot/over heating is the water in the expansion bottle boiling away ???

Erm.. no it dosnt only when you open the cap slightly to let the pressure out...

 

[meltonlad]

air lock ??? have you got heat coming from the vents when set to HI ?

 

[mikey_b]

air lock ??? have you got heat coming from the vents when set to HI ?

its just about warm on hi...what you think?

 

[meltonlad]

im thinking air lock or water pump ! to check water pump remove thermostat put finger in hole and feel to the left handside and feel the pump. but its more likley to be water pump. also have you checked to see if the fans are kicking in when they should do ???

 

[mikey_b]

im thinking air lock or water pump ! to check water pump remove thermostat put finger in hole and feel to the left handside and feel the pump. but its more likley to be water pump. also have you checked to see if the fans are kicking in when they should do ???

i will try it in morning mate and thanks for the help and will try 2 get back 2 u...

 

[meltonlad]

good luck mate. when was cambelt done ?? was pump done at same time ??

 

[R@B]

Nice to see you passing on your newly found knowledge Meltonlad.Have sussed out what your going to do yet?
As for original thread, sounds like an air lock or thermostat but i would put my money on the thermostat staying shut. As meltonlad said if its the water pump you could let the car idle and the temp would stay normal or drop back to normal. Try taking thermostat out and put in boiling water and see if it opens. There seems to be alot of this happening to people on here recently, myself included.

 

[andy_w]

Hope its the thermostat it sounds like it. I overheating is constant then indicates thermostat. Just done my water pump lastnight started at 6:00 finished at 10:30 pig of a job but only cost me £33 for pump and anti freeze so i am quite happy.

 

[Reyes]

Im gonna say water pump just had mine done today

 

[meltonlad]

reyes what you pay for that mate ?? if you dont mind me asking

 

[robcool]

sounds to me that the thermo stat has gone!!! what miles have you done? has a cam belt been done and did they change the water pump?

 

[mikey_b]

good luck mate. when was cambelt done ?? was pump done at same time ??

cambelt was changed about 9k miles ago, didnt change the pump as it was changed before i bought the car aprox 17month ago

 

[mikey_b]

sounds to me that the thermo stat has gone!!! what miles have you done? has a cam belt been done and did they change the water pump?

car has so far covered just over 80k

 

[robcool]

might just be the thermo stat then mate should be hard to change think its just down on the right hand side of the engine.

 

[mikey_b]

might just be the thermo stat then mate should be hard to change think its just down on the right hand side of the engine.

is that what is stopping the water to flow to the bottom pipe then??

 

[robcool]

it chould be one of the reason for your over heating thermostat opens then the engine is hot to circulate the hot water around the block and over parts of the engine/
The water pump is a main part of the coolant system but don't no if the is a hole in the bottom of the leon water pump which are on some water pump which will leak abit of coolant when they are on the way out?
To test the thermostat remove it and put in boiling water it should open if not it ****ed.
Them fan module relay things are a common thing to go on golf not should about leons,