Important! : Engine Overheating, No Hot Air??? Help lol

1. user_42401 Established Member Joined: Mar 2010 Cupar Fife Posts: 1712 1600 16v VTS 1600 8v VTR 1400 16v Clio Sport

   #1 7th December 2010, 14:24

   Basicly the car is overheating ( was fine on water level untill it overheat now its just above minimum), mite have something to do with cold conditions?
   
   and also my hot air on the heater ( rest of heater works fine eg. feet, window and cold air ) just not getting any hot air through.
   
   its not the head gasket as i have checked and its no the ignition barrel re-wire thing as the power steering and read window de-mister also works?
   
   the cars a v reg mk2 vtr ( model with the mk1 engine, rad, inlet etc)
   
   what use think?
2. Vtr_HBO Regular Poster Joined: May 2009 Stoke on Trent Posts: 307 Silver 106 GTI

   #2 7th December 2010, 14:27

   How did you check the head gasket?
3. user_42401 Established Member Joined: Mar 2010 Cupar Fife Posts: 1712 1600 16v VTS 1600 8v VTR 1400 16v Clio Sport

   #3 7th December 2010, 14:30

   took oil cap cover off and its imaculately clean, not a trace of water
4. Vtr_HBO Regular Poster Joined: May 2009 Stoke on Trent Posts: 307 Silver 106 GTI

   #4 7th December 2010, 14:36

   Maybe your thermostat is gone?
5. user_42401 Established Member Joined: Mar 2010 Cupar Fife Posts: 1712 1600 16v VTS 1600 8v VTR 1400 16v Clio Sport

   #5 7th December 2010, 14:39

   also after i overheat it i let it cool then drove another 15miles home in which it didnt overheat but the heaters still wernt hot?
6. user_42401 Established Member Joined: Mar 2010 Cupar Fife Posts: 1712 1600 16v VTS 1600 8v VTR 1400 16v Clio Sport

   #6 7th December 2010, 14:39

   so i think that illiminates the thermostat as it would have just overheated again?
7. user_31412 Established Member Joined: Feb 2009 ★ West / North Yorkshire ★ Posts: 1653

   #7 7th December 2010, 14:42

   Quote:

   Originally Posted by SaxSpeed Basicly the car is overheating ( was fine on water level untill it overheat now its just above minimum), mite have something to do with cold conditions?

   Maybe the thermostat or just need bleeding?
   
   

   Quote:

   Originally Posted by SaxSpeed and also my hot air on the heater ( rest of heater works fine eg. feet, window and cold air ) just not getting any hot air through.

   What do you mean by rest of the heater works fine? It blows cold air but not warm? Or it blows warm air to everywhere but the dash vents?
   
   

   Quote:

   Originally Posted by SaxSpeed its not the head gasket as i have checked

   You need to do a compression test at least buddy, the mayo on the oil cap is only an indication.
8. nash_sax L-plater Joined: Nov 2010 Posts: 55

   #8 7th December 2010, 14:44

   It's got all the symptoms of head gasket failure...
   
   Thermostat can get stuck in 2 positions, Open, or closed....if it's Open then fine it's less likely to overheat - if it's closed this is when you can have over heating problems as it's not allowing the water to circulate and cool.
   
   I would seriously take the thermostat out and inspect it and test it (bowl of boiling water, drop it in, if it pops open it's fine, if it sits there and does nothing, it's f.ucked"
   
   Check your water - if it's turning a creamy custard like colour or consistency then it's almost 100% definately your head gasket.
9. user_42401 Established Member Joined: Mar 2010 Cupar Fife Posts: 1712 1600 16v VTS 1600 8v VTR 1400 16v Clio Sport

   #9 7th December 2010, 14:50

   the water and the head both look fine to me and clean enuff, and i meant there is no hot air going to any of the vents, but it is getting cold air at all speeds, its not asiff its not working completely, its just u get cold air when you put it to hot and cold air when u put it to cold
10. user_42401 Established Member Joined: Mar 2010 Cupar Fife Posts: 1712 1600 16v VTS 1600 8v VTR 1400 16v Clio Sport

    #10 7th December 2010, 14:58

    ??????????
11. user_31412 Established Member Joined: Feb 2009 ★ West / North Yorkshire ★ Posts: 1653

    #11 7th December 2010, 14:59

    OK
    
    Erm Id try bleeding it (with coolant) - with a header bottle.
12. user_42401 Established Member Joined: Mar 2010 Cupar Fife Posts: 1712 1600 16v VTS 1600 8v VTR 1400 16v Clio Sport

    #12 7th December 2010, 15:01

    could it be that its just needing bled?
    shurely not?
    
    ill give it a try and get back as i think a few people are having problems
13. user_42401 Established Member Joined: Mar 2010 Cupar Fife Posts: 1712 1600 16v VTS 1600 8v VTR 1400 16v Clio Sport

    #13 7th December 2010, 18:55

    anyone else got an opinion?
14. user_42401 Established Member Joined: Mar 2010 Cupar Fife Posts: 1712 1600 16v VTS 1600 8v VTR 1400 16v Clio Sport

    #14 7th December 2010, 22:53

    Think i have it sused, was sitting thinking for a while lol
    
    1. Head gasket hasent gone as i have checked it and no sign off mixing
    2. Radiator isnt leaking as the radiator is peresurising itself and wouldnt be able to if there was a leak.
    3. if the radiators presurising its self then there must be a blockage in the system
    4. Bleed Screw on Top right of rad isnt releasing water which means waters going in but not returning, hence presurising it and overheating
    5.in my eyes this means the thermostat is knackerd, so going to take it out tomorow and run without untill i get 1
    then re blead the system
    
    question is im at my house and the saxos at my girlfriends house as i abandoned it there when it overheat, anyone able to tell me the sizes of tools ill need to take up with me
15. user_42401 Established Member Joined: Mar 2010 Cupar Fife Posts: 1712 1600 16v VTS 1600 8v VTR 1400 16v Clio Sport

    #15 8th December 2010, 11:55

    anyone?
16. user_42401 Established Member Joined: Mar 2010 Cupar Fife Posts: 1712 1600 16v VTS 1600 8v VTR 1400 16v Clio Sport

    #16 8th December 2010, 15:01

    turns out it was the thermostat and needed bled, so removed the thermostat and rebuilt it, then bled it in order, rad then stat valve then cam valve, runs perfect now nover goes above halfway on thermo guage and heaters work perfect
17. user_36198 Saxperience Post Whore Joined: Aug 2009 ilkeston derbyshire Posts: 9823 C2 VTR stripped, 406hdi, clio 172

    #17 8th December 2010, 15:59

    excess pressure in the cooling system is a sign of an airlock in the cooling system, air locks can easily be caused by a failed head gasket leaking compression gases into the coolant. common misconception that all head gasket failures cause mayo, also a common misconception that all cars with mayo need a head gasket change.
18. user_42401 Established Member Joined: Mar 2010 Cupar Fife Posts: 1712 1600 16v VTS 1600 8v VTR 1400 16v Clio Sport

    #18 8th December 2010, 16:01

    Quote:

    Originally Posted by mandyslover70 excess pressure in the cooling system is a sign of an airlock in the cooling system, air locks can easily be caused by a failed head gasket leaking compression gases into the coolant. common misconception that all head gasket failures cause mayo, also a common misconception that all cars with mayo need a head gasket change.

    its was the thermostat and needed bled lol
19. mlawlan69 Saxperience Forum Bum Joined: Sep 2010 leeds Posts: 4389 MCS R53 S/C 16v furiooo

    #19 8th December 2010, 16:37

    Quote:

    Originally Posted by SaxSpeed took oil cap cover off and its imaculately clean, not a trace of water

    same here but my gasket is going.....
    
    im having all the same things wrong too, no heat, and over heating engine..
20. user_42401 Established Member Joined: Mar 2010 Cupar Fife Posts: 1712 1600 16v VTS 1600 8v VTR 1400 16v Clio Sport

    #20 8th December 2010, 18:56

    yes but i removed the thermostat and bled the radiator and its perfect now, better than it has ever been lol
21. RustySkull Saxperience Post Whore Joined: Oct 2009 Basildon And Corringham, Essex Posts: 5179 MK1 Focus RS, Discovery TD5, Renault Trafic 2.0

    #21 8th December 2010, 18:59

    A bleed should fix it.
22. user_42401 Established Member Joined: Mar 2010 Cupar Fife Posts: 1712 1600 16v VTS 1600 8v VTR 1400 16v Clio Sport

    #22 8th December 2010, 19:02

    if ur speaking to me iv already said i have fixed it lol
23. RustySkull Saxperience Post Whore Joined: Oct 2009 Basildon And Corringham, Essex Posts: 5179 MK1 Focus RS, Discovery TD5, Renault Trafic 2.0

    #23 8th December 2010, 19:21

    Quote:

    Originally Posted by SaxSpeed if ur speaking to me iv already said i have fixed it lol

    Well, I'm not sure who I was speaking to lmao I don't remember posting here but I clearly did...
24. user_42401 Established Member Joined: Mar 2010 Cupar Fife Posts: 1712 1600 16v VTS 1600 8v VTR 1400 16v Clio Sport

    #24 8th December 2010, 19:35

    Quote:

    Originally Posted by Bikekid450 Well, I'm not sure who I was speaking to lmao I don't remember posting here but I clearly did...

    haha cheers for the contribution anyway lol, problems fixed now anyway
25. user_31412 Established Member Joined: Feb 2009 ★ West / North Yorkshire ★ Posts: 1653

    #25 8th December 2010, 22:22

    Ha ha love it.. you get more help on here when its fixed
26. user_42401 Established Member Joined: Mar 2010 Cupar Fife Posts: 1712 1600 16v VTS 1600 8v VTR 1400 16v Clio Sport

    #26 8th December 2010, 22:55

    yup lol seems a lot of people are having this problem
27. user_34297 Saxperience Addict Joined: May 2009 Somewhere in Bonnyland Posts: 10669 Super clean mk5 Golf Gti and 306 hdi

    #27 9th December 2010, 05:54

    My guess was heater matrix