Menu toggle

URGENT - COOLING FANS ON

Guest

Guest

New member
and staying on, any ideas what is at fault ?

as a last resort i will disconnect the battery and see what happens when i reconnect, but is it maybe a case that the temp sensor has gone on the blink and thinks its still too hot ?

Thanks in advance
 
Don't panic, found this thread.

http://www.porscheclubgbforum.com/tm.asp?m=54192&mpage=1&key=COOLING%2CFANS&#54197


Grrrrrrrrrrrrr

 
Thanks, i pulled numbers 10 and 15, both 25amp fuses, one for each fan - if you only pull one the other fan just speeds up - quite clever really [;)]

I can't find the relay part on the link ot Berlyn, got any tips on that one ? the nearest i could find was one at £155 ! YIKES [:(]
 
Also meant to say, this is bleedin typical - we have had our firsy baby arrive 7 weeks ago and the porker hasn't been driven much (not at all in the last 4 weeks), went to move it 2 days ago and it needed a new battery, new battery in courtesy of halfrauds and some hard earned dosh yesterday, now this happens today after an amazing run in it - better not be the £155 relay i need [:mad:]

All help appreciated, even in locating the relay itself.
 
Ahh, one of my fans didn't work hence only needing to pull one fuse.

I don't know where the relay is, but it's usually the £20 switch that goes. I think unplugging it will tell you if it's the switch as it completes the circuit when hot and fails to that state.
 

ORIGINAL: Fen

Ahh, one of my fans didn't work hence only needing to pull one fuse.

I don't know where the relay is, but it's usually the £20 switch that goes. I think unplugging it will tell you if it's the switch as it completes the circuit when hot and fails to that state.
Click to expand...


Thanks, next question then - where is this switch you are talking about ? [:eek:]

slim and i had a good look for the thermoswitch at the back of the radiator/fans to no avail tonight.
 
ORIGINAL: 944 S2


ORIGINAL: Fen

Ahh, one of my fans didn't work hence only needing to pull one fuse.

I don't know where the relay is, but it's usually the £20 switch that goes. I think unplugging it will tell you if it's the switch as it completes the circuit when hot and fails to that state.
Click to expand...

Thanks, next question then - where is this switch you are talking about ? [:eek:]

slim and i had a good look for the thermoswitch at the back of the radiator/fans to no avail tonight.
Click to expand...

Yip not a sausage!!
 
It's down the side of the rad I believe. I want to say nearside end but I could be making that up. I just waited until next service and had mine replaced for me [&:]
 
Yes it's on the passenger side (of a RHD car).

I 'think' you can see it on an S2 if you look down through the engine bay, but if not then take off the undertray and look up. It's basically a wire with a plug connecter onto the switch which is screwed into the radiator. Pull off the plug and if the fan stops then it is the switch that has failed. Changing the switch means draining the coolant and refilling/ re-bleeding the system [8|]
 
ORIGINAL: 944 S2
now this happens today after an amazing run in it
Click to expand...

Not much help to you, but I had a superb run the other day too. Gorgeous sun, not too much traffic, sunroof open and plenty of grip available. Luverly. [:D]

You, me and the the sliminator need to meet up again sometime late June / July. [8D]
 

will get peter to sort it out for me, need to get the cam chain / tensior, hand brakes shoes done soon anyway - just bring it all forward a couple of months.


defo meet up, might just be 2 944's and 1 civic [:(]

P.S. Thanks Diver944 for confirming that, will check it before i get peter to do the work. [big thumbs up]
 
It typically is the radiator thermo fan switch that fails. Better hope so because the main relay is quite expensive.

You can test the switch as described in Clark's Garage. Other item is don't over torque the new switch. The radiator end tanks are plastic and the thermo fan switch screws into a brass boss cast into the left plastic end tank. Crack that plastic and you just increased repair cost over 10 fold.
 

ORIGINAL: IceShark

It typically is the radiator thermo fan switch that fails. Better hope so because the main relay is quite expensive.

You can test the switch as described in Clark's Garage. Other item is don't over torque the new switch. The radiator end tanks are plastic and the thermo fan switch screws into a brass boss cast into the left plastic end tank. Crack that plastic and you just increased repair cost over 10 fold.
Click to expand...

that'll be the ones advertised at £150 [:(]

i am still to check the switch by pulling it out, off to check that guide you mentioned. I will defo be getting a pro to fit this item as i have other things to get fixed that i dont have the time/experience for.

Big thanks for the help so far [:)]
 
Last thing I forgot to say. Keep an eagle eye on the temp gauge in traffic if you have the fuses pulled; you don't want to add a head gasket to the list I'm sure.

The car will be fine at speed without the fans though.
 
The wise thing to do is to pull the relay in the fuse box, then put it back in when you want to drive it. It only takes 30 seconds and at least your car won't overheat. That's what Hartech told me to do when mine went horribly wrong and set my alarm off in the middle of the night.
 

ORIGINAL: Rodders

The wise thing to do is to pull the relay in the fuse box, then put it back in when you want to drive it. It only takes 30 seconds and at least your car won't overheat. That's what Hartech told me to do when mine went horribly wrong and set my alarm off in the middle of the night.
Click to expand...


While I've done this myself it probably isn't the smartest idea to do this for long. The pins the relay plugs into weren't designed to take constant plug in and out and you don't want to be messing with them to replace or tighten up.

Another point is you don't want to stress the relay too much. It has a finite life cycle. Best to sort the problem sooner rather than later.
 
You must log in or register to reply here.

Posts made and opinions expressed are those of the individual forum members

Use of the Forum is subject to the Terms and Conditions

Disclaimer

The opinions expressed on this site are not necessarily those of the Club, who shall have no liability in respect of them or the accuracy of the content. The Club assumes no responsibility for any effects arising from errors or omissions.

Porsche Club Great Britain gives no warranties, guarantees or assurances and makes no representations or recommendations regarding any goods or services advertised on this site. It is the responsibility of visitors to satisfy themselves that goods and/or services supplied by any advertiser are bona fide and in no instance can the Porsche Club Great Britain be held responsible.

When responding to advertisements please ensure that you satisfy yourself of any applicable call charges on numbers not prefixed by usual "landline" STD Codes. Information can be obtained from the operator or the white pages. Before giving out ANY information regarding cars, or any other items for sale, please satisfy yourself that any potential purchaser is bona fide.

Directors of the Board of Porsche Club GB, Club Office Staff, Register Secretaries and Regional Organisers are often requested by Club members to provide information on matters connected with their cars and other matters referred to in the Club Rules. Such information, advice and assistance provided by such persons is given in good faith and is based on the personal experience and knowledge of the individual concerned.

Neither Porsche Club GB, nor any of the aforementioned, shall be under any liability in respect of any such information, advice or assistance given to members. Members are advised to consult qualified specialists for information, advice and assistance on matters connected with their cars at all times.

Porsche
Lockton
Pirelli
Officially approved
Oracle Finance
WEX Esso
Collecting Cars
Archant Dialogue
Back
Top