Sean1933 Posted July 1, 2006 Share Posted July 1, 2006 Hi all, I have was drivin my lovely new car home after picking it up from Jurgen, i got within 10 miles of my house and when i start pulling away from a junction, it sounds like i have a jet engine under the bonnet!!! I managed to get home and it appears that whenever i rev the car the fan for the radiator speeds up to a rediculous speed. Its doing it contstantly, even when the temp is normal!!! Please Help! Quote Link to comment Share on other sites More sharing options...
mikeyh Posted July 1, 2006 Share Posted July 1, 2006 Hi all, I have was drivin my lovely new car home after picking it up from Jurgen, i got within 10 miles of my house and when i start pulling away from a junction, it sounds like i have a jet engine under the bonnet!!! I managed to get home and it appears that whenever i rev the car the fan for the radiator speeds up to a rediculous speed. Its doing it contstantly, even when the temp is normal!!! Please Help! the viscous will spin faster as you rev engine because its attached to one of your engine pullys:) Quote Link to comment Share on other sites More sharing options...
Sean1933 Posted July 1, 2006 Author Share Posted July 1, 2006 i realise that, but its really really fast, and loud! I mean alot more than normal. Only started doing it 10 miles before home. I Have just checked it again and its now back to normal. The fan seeps to rattle a little on idle. Does this mean the fans bugged and i need a new one? I dont know how visous fans work so i dont know. WD40 do any good? Quote Link to comment Share on other sites More sharing options...
toyotasuprauk Posted July 1, 2006 Share Posted July 1, 2006 Cant say I've ever noticed mine change speed if I rev the engine or not? Quote Link to comment Share on other sites More sharing options...
Jake Posted July 1, 2006 Share Posted July 1, 2006 Sounds like the viscous fan may have seized. You should be able to spin the fan fairly freely by hand when the engine is turned off. If you can't the coupling has seized (not uncommon). This makes the car idle rough and wastes fuel. When the engine is ticking over you should be able to gradually slow the fan to a stop with your fingers. If you try it but it cuts your fingers off then it's definitely seized There are no serviceable part inside the coupling. A new visous coupling is 226 +vat -- well it was that much two years ago when I needed one. The car ran much better after I replaced the coupling though. Quote Link to comment Share on other sites More sharing options...
pistonbroke Posted July 2, 2006 Share Posted July 2, 2006 Jake, am I right in thinking the thread that holds the coupling on is back to front as well, this is so it doesn't loosen with the rotation of the engine. I think its called a left hand thread, so when you go to take it off, be careful because you may actually be tightening it up. Quote Link to comment Share on other sites More sharing options...
Gamer Posted July 2, 2006 Share Posted July 2, 2006 I have the viscous fan that I removed from my car to make way for the twin electric fans. It is in very good condition.. £50+ P&P and it's yours. Quote Link to comment Share on other sites More sharing options...
Sean1933 Posted July 2, 2006 Author Share Posted July 2, 2006 Thanks all, but its going to be sorted now. As some of you may know i only picked my cary from Jurgen yesturday morning. Anyway this is a problem he could not have fortold, yet with him being such a legend he has sourced me a good fan that works and is shipping to me for nothing! Legend! Quote Link to comment Share on other sites More sharing options...
Jake Posted July 2, 2006 Share Posted July 2, 2006 Jake, am I right in thinking the thread that holds the coupling on is back to front as well, this is so it doesn't loosen with the rotation of the engine. No mate, the four 12mm nuts that secure the coupling (and the pulley) are regular right hand thread. Quote Link to comment Share on other sites More sharing options...
pistonbroke Posted July 3, 2006 Share Posted July 3, 2006 that told me, They used to get stuck all the time on transit van diesel engines and it was held on by a big left hand thread. I suppose it was silly of me to compare them to a Supra engine Quote Link to comment Share on other sites More sharing options...
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