Cooling Fan Issues and Egnine Running Poor (Vid Included)

S3_NDJ

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Hi All

In the past 2 days i have noticed that my rad fans are not coming on unless i have the air con on.

It currently idles poorly when the air con is off but once i turn aircon on it starts to sound much better and smoother? please have a look at the vid link Here;

Here is a Vid Link:



Yesterday i had issues starting when hot as i drove about 5 miles to a m8s house and then noticed the idle sounded like it was hunting or just wasnt smooth at all.and i noticed the enigine fans where not coming on when the engine was at 90 degrees so i went on here and searched for forum links for radiator fans not working and found this link that mentions about fuses...
http://www.audi-sport.net/xf/threads/cooling-fans-wont-come-on.125733/
This also lead to tuffty's page as all forums do at some point lol however i read through and couldnt find anything to help me. also the pictures are no longer showing on the link above.

Faults on my car
One was to do with airbag (This is fro the new steering wheel however will be sorted shortly) http://wiki.ross-tech.com/wiki/index.php/00588

One was power supply B+ Terminal 30 voltage to low (This would make sense as i have removed the battery recently in last month)
http://wiki.ross-tech.com/wiki/index.php/18010/P1602/005634

Last One is the coolant sensor (This has been replaced in the last 3 months with the fault code coming straight back. however the engine running at idle has been fine and the engine temp looks believable in my eyes as when on the drive it gradually rises and is at 90 when doing town driving and can sometimes be at 70/80 when on dual carrigeways at 70 + mph)
http://wiki.ross-tech.com/wiki/index.php/16500/P0116/000278

I will take this to my main garage however it is over 30 miles away so i was just wondering if there are any simple checks i can do before driving it a long distance and risking anything.

I am currently reading this forum post and is shows about the terminals coming of the poitive and the fuses. I changed all 3 fuses yesterday for 30A ones witch is like for like.
http://forums.vwvortex.com/showthre...n-issues-(Engine-Bay-Fuse-identification-too)

There is a pic also of my terminals and fuses ontop of the battery and they look like they are in good condition to me...

Any ideas anyone please let me know !
 

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Update: Rough idle i think is MAF related as unplugged the MAF and ran much smoother so i have a new one coming for 35 after surcharge :)

However the fans not running when the car is at temperature of 90 is still worrying me any ideas on that??
 
Low speed fans dont kick in til 95-96 i think an high speed around 102.. check with vagcom what temp your coolant is on to see when fans kick in. Get volt meter check all fuses ontop of battery tray. But if your pressing ac button an they come on then they work an maybe you could have dodgey temp switch or something?
 
Hey limbo
Thanks for the help however it is all sorted now the fans are working and it was issues with fuses... also i got a new MAF witch sorted the rough running out so luckily sone simple fixes sorted it all out :) thanka for the advise anyway :)
 

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