43 replies to this topic

[daenesh]

well thats wad i read in one of calver's books.. if i were to use a 74 degree thermostat i would have an open thermostat almost all the time..

[jonny95]

surely in a hot climate you need a lower temperature thermostat...

[daenesh]

yeah sorry just realised the mistake i made when typing it.. yeah what i meant was cooler temp use higher temp thermostat.. and vice versa.. but then again i think im using a 82 degrees one.. i honestly cant be sure

Edited by mra-minis.co.uk, 09 March 2013 - 12:30 PM.
sorry wrong post, nothing to edit.

[firstforward]

Yes you need a lower temp thermostat, without buying another try running without the thermostat fitted, if this still overheats the problem lies elsewhere, are you sure the rad is free flowing?. To be honest the electric fan only needs to be on when it rises to 90 degrees or thereabouts so if you have to have that running when the air con is off or on something is wrong somewhere.

Please Note I have added a post below (No 24) to explain why it is NOT a good idea to simply remove the thermostat !

I understand that you don't mean run it long term, however some people will assume that it is ok to do so. Edited by MRA

OK Point taken, as you stated it was only to diagnose as a temp measure, I forgot about those that might think its permanent.

Edited by firstforward, 17 March 2013 - 12:16 PM.

[daenesh]

yeah i get what you mean and thats why im having this problem.. my rad is in good condition as i serviced it bout less than a year ago.. its a 3 core

[daenesh]

any tips on how i can remove the thermostat housing without breaking it?

[KernowCooper]

here you can see for yourself if i have fitted it wrongly..

Quote@daenesh
I've rebuilt a few engines mates I'm pretty sure I know if my fan is tye wrong way around.

What you have to remember is were all giving suggestions to a problem your finding hard to cure

And Unless My Eyes Are Playing Tricks Your Fan Looks Back To Front

Edited by KernowCooper, 06 March 2013 - 02:28 PM.

[daenesh]

here you can see for yourself if i have fitted it wrongly..

Quote@daenesh
I've rebuilt a few engines mates I'm pretty sure I know if my fan is tye wrong way around.

What you have to remember is were all giving suggestions to a problem your finding hard to cure

And Unless My Eyes Are Playing Tricks Your Fan Looks Back To Front

i know and i really appreciate it but that is the right way.. the smooth side facing the engine.. maybe the picture isnt too good..

[MRA]

It may not be the wrong way around, however the vanes are bent and much reduced in their efficiency.

Also please remember that its not nice to be rude to those who are willing to help, and Kernowcooper is very well qualified to help you....

Something else worth remembering is that the fan being on the wrong way around is so much more common than you think, and Ive seen a lot with this fault over the years, and on engines that were built by people with a lot more engine building experience that yourself.

Edited by mra-minis.co.uk, 06 March 2013 - 11:44 PM.

[daenesh]

i understand and i apologize if i came off sounding rude was not my intention at all.. just the way he asked me was as if he was trying to imply i didnt know which is left or right.. anyways small issue.. am just trying to get to the bottom of this issue and you must understand that if i post here it means i have checked almost everything i know in the engine 2-3 times and yet not found the problem.. and thats when i retreat here to try and find some answers..

[Earwax]

Hi , If you want to try something else before the no thermostat or different thermostat suggestions ( given it is fast road causing problems ) try the same fast road without the secondary fan...... even though i believe you have set it up as a pull through, it wouldn't surprise me if the low pressure at speed is better equipped to handle the situation then two fans pushing and pulling..... ( i am assuming the second fan was on in this instance ) if not then i concur with a test run without thermostat or a lower temp thermostat

A good clean system with flowing air will do road speeds quite well.

edit ( late addition)

moving the thermostat housing undo the three studs (or sometimes bolts) and undo the ebgine steady if you have one,,, then just lean against the housing in a couple of different directions, it will pop the seal and slide sideways. if it is really seized you might use a soft rubber mallet , but no keen on that

Edited by Earwax, 07 March 2013 - 07:02 AM.

[jaydee]

yeah sorry just realised the mistake i made when typing it.. yeah what i meant was cooler temp use higher temp thermostat.. and vice versa.. but then again i think im using a 82 degrees one.. i honestly cant be sure

For Malaysian climate you need a 74° stat and possibly a 6 blade fan

[MRA]

without buying another try running without the thermostat fitted,

If you run your engine without a thermostat then you will get issues.... what happens and why,

1) the temperature sender gets cooler water, so drops down giving the appearance of reduced water temperature.
2) cylinder no 4 gets the hottest water because the flow is no wrong and water is not flowing to number 4 cylinder thus no or little cooling at number 4, however as there is no gauge you don't see this happening until it is too late :-(

You can remove the thermostats centre or fit a blanking plug to get better flow, but never run without one or the other.

Edited by mra-minis.co.uk, 09 March 2013 - 12:25 PM.

[daenesh]

Okay updates guys.. I ran the car without the extra fan and it almost the same.. Also made a realisation that on my thermostat I made a few holes and decided to en crease it to 3/8 of an inch and took it for a drive the faster I go the hotter it gets but as soon as I reduce e speed to like 60 and drive slowly the temperature will drop from say 95 till half which is like 80 degrees perhaps

[MRA]

What country are you in ? and what is the temperature during the day ?