hi everyone this is my first post i brought a s3 quattro from a good friend, it has been sitting since april run out of tax and mot, was used by him everyday before that, took it for a good run up the road was all good til i stopped and the temp on the car shot up and started steaming from bottle, the fans weren't coming on, turned it off, and left it for the night, looked at it all today have put a direct feed to fans on all the feeds but no movement from them, the water pump was done 7000 miles ago so cant see it being that, think it the fans but not 100% if anyone got any ideas or things i can check that would be great many thanks
overheating problem
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Isn't the fans failing a common issue ?
I 'think' the replacements fans fitted are supposed are upgraded ones.
btw, you don't mention what year is your S3.
I 'think' the replacements fans fitted are supposed are upgraded ones.
btw, you don't mention what year is your S3.
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Even if the fans are not cutting in at 102 degrees I wouldn't expect it to overheat as much as you've described.
There may be a big air lock in the system somewhere. You need to check all the coolant hoses to and from the radiator and heater matrix to see if they all get warm when the car is up to temp.
The fans might not be cutting in due to a blown fuse (1st fuse of the 3 green ones that are on too of the battery) or because one of the coolant hoses doesn't have hot water running through it due to airlock.
There may be a big air lock in the system somewhere. You need to check all the coolant hoses to and from the radiator and heater matrix to see if they all get warm when the car is up to temp.
The fans might not be cutting in due to a blown fuse (1st fuse of the 3 green ones that are on too of the battery) or because one of the coolant hoses doesn't have hot water running through it due to airlock.
it a 2001 i have put my hands on the hose and all are getting warm, i have changed them fuses and looked at the fitting not melted ect
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Bought mine 2002 8l with Aircon not working and it got hot only in traffic, but was fine when driving (heater worked too) thanks to these chaps on here I wiggled the 30 amp fuse ontop of the battery and hey presto everything works fine....the fuse gets gots and corrodes the terminal but looks ok... I would try your fuse...worth a try!,,
firstly i'd check if the fans turn on when you have the air conditioning on
if they do
if they do
- water pump failure
- radiator fan switch failure
- stuck thermostat
- fuses on top of the battery, very common for them to get hot, which metls the plastic, which leaves residue on them, which causes resistance the fuses don;t actually blow
- faulty fan control module
- faulty fans
- faulty fan wiring
Mine does'nt overheat now after changing the fuse on top of the battery, but the Aircon fan in the engine bay does come on when Aircon is on..But all works fine...i.e. ice cold Aircon and the car does not run hotter than 90 even after a blast or sat in traffic.
The fuse I changed was not blown but had residue on it.
