Menu toggle

non stop fan

Guest

Guest

New member
Got a problem!The fan does not switch off when the engine is off! Checked relay and the fan still remains on.Could it be the temperature sensor or something else? Cheers Tom.
 
Does the fan run all the time even after the car has been sat all night? The engine cooling fan should run after the engine is switched off untill the engine has cooled sufficiently.
 
Hi Graeme. It will run until the battery is flat.It is the second fan that kicks in when the temp goes up.Took the car to have the alarm repaired and had to sit in traffic.Temp went up and second fan kicked in. It has done it before and I took the relay out/put it back in and the fan was Ok.Now you can only stop it by taking the relay out.So put new relay in and still have the problem!!
 
Most likely the temp sensor. It's about £20. You can pull a fuse (15 I think) until you replave it but remember it's out if you get caught in traffic.
 
Not sure what model you have and I am not sure what the differences are between the models, but the fan relay on the 944S is a 176 pound plus vat from the OPC and not that much cheaper elsewhere. The sensor is on the passenger side of the radiator just below the top hose on the 944S.

The fan may come on when the car is first turned off usually due to heat sink and shouldn't remain on for more than aprox 5 minutes. As far as I understand there are two fan speeds on the 'S', with high speed kicking in as the needle reaches the upper end of the upper mark of the gauge (before the red sector).

The heat switch in the radiator is cheaper to buy and range in price from 10 pounds through to 30 pounds. You will need a heaft size socket wrench though as it is over 24mm. And don't over toque it. I don't have the torque setting to hand right now though.
 
Shop around for a temp. switch it's the next thing to try. I changed one a few years back & seem to recall having to borrow a 32mm socket, but check this.
 
The cheapest I have found is on the German and swedish website

www.gsfcarparts.com
and is about 4 pounds plus vat and delivery. I just paid four times that for mine last month from a specialist.

Search under 'porsche 944' then s'witches, senders, instruments'.
 
Hmmm.... lets just say that I am surrounded by print out, service manuals, price lists, and skinned knuckles.

The replacement proceedure is on this website under 'garage manual' , then "thermo switch"

Clarkes Garage

Although it is pretty simple to undertake, just don't over torque it or cross thread it. Radiators are not of the most robust materials.
 
My lux has a single fan, It has two speeds. When you switch off the engine with the fan running, the speed changes to slow.
I have always thought this was to save the battery.

Is the fan ment to change speed with the temperature while driving?
 

ORIGINAL: golfchampion

Got a problem!The fan does not switch off when the engine is off! Checked relay and the fan still remains on.Could it be the temperature sensor or something else? Cheers Tom.
Click to expand...

Mine did the same a couple of years ago (944S). Temperature sensor in the radiator. It's got 2 spade termainals. If you pull one off, the fan will stop to prove the problem.

Cheap part from Eurocarparts and easy to replace. Make sure you bleed the system properly afterwards ...

HTH
Rick.
 
Mine did the same a couple of years ago. Temperature sensor in the radiator. It's got 2 spade termainals. If you pull one off, the fan will stop to prove the problem.

Cheap part from Eurocarparts and easy to replace. Make sure you bleed the system properly afterwards ...
Click to expand...

ditto
 
Had that on 86 lux about 18 months ago and was advised to change both the relay and the sensor together irrespective of which was faulty. So said so done...re the question would the fan still be running the following morning...sadly not...battery flat with no jumpleads and its jolly tricky trying to bump start an automatic!

Cheers!
 
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