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Only one cooling fan is coming on

Posted: Fri Jun 04, 2010 4:26 pm
by jason1987
the right hand fan goes flat out but the left one doesnt move, if i touch/wobble the left fan it will start to try and spin, when it does it only spins slow while the right one spins flat out, also when the A/C is on the fan or fans dont stay on constantly, they kick on and off like it would anyway. i took the front grill off to look at the relays and i have 3, i had a look at them and cant see anything wrong with them but i dunno what im looking for, which relay do i need to replace? as there is 3 and i dont know which are for what.

Re: Only one cooling fan is coming on

Posted: Fri Jun 04, 2010 4:29 pm
by mjb
jason1987 wrote: if i touch/wobble the left fan it will start to try and spin,
The relays aren't your problem. Your fan motor is most likely shot if the blades aren't rubbing on anything

Re: Only one cooling fan is coming on

Posted: Fri Jun 04, 2010 4:51 pm
by jason1987
well what would happen if it was the relays? also if the motor is broken will it mess it up the same way the relay does and only run one fan on high temp?

Re: Only one cooling fan is coming on

Posted: Fri Jun 04, 2010 4:56 pm
by steve_earwig
If it was a relay the fan wouldn't even try to spin. Duff fan or duff relay, the result would be the same - remaining fan pulsing on and off all the time.

Sounds just like mine when the brushes wore out on one of my fans, it'd spin if I gave it a push but otherwise zilch.

Re: Only one cooling fan is coming on

Posted: Fri Jun 04, 2010 5:00 pm
by jason1987
looks like ive gotta go to scrappy then, but id prob have to dismantle it all myself at a scrap yard wouldnt i? anyone know how much a motor would be new?

Re: Only one cooling fan is coming on

Posted: Fri Jun 04, 2010 5:05 pm
by jason1987
i looked on GSF and it lists a radiator motor for about £56 but it says 2.0 16v, no 8v on there, also thats not including vat

Re: Only one cooling fan is coming on

Posted: Fri Jun 04, 2010 5:11 pm
by jason1987
the motors arent too hard to change are they? the electrics just plug into the new motor doesnt it? no tricky wiring or anything

Re: Only one cooling fan is coming on

Posted: Fri Jun 04, 2010 5:12 pm
by steve_earwig
On Service Box the 2.0 16v has either 2 x 200 watt or 2 x 250s, the turbo needs the 250s, if it's the lower output one I'm not sure if that would give any issues when it runs them in series (apart from one fan running faster than the other). The real thing is 135 pounds and ninepence (but you get a nice shiny new fan with it too! :roll: )

Or you could get one from the scrappies...

John Foss's D8 fan change how to.

Btw the fan screw is a LEFT-HAND THREAD :oops: :oops:

Re: Only one cooling fan is coming on

Posted: Fri Jun 04, 2010 5:20 pm
by jason1987
scrappy prob best but dunno how im gonna get the motor out at scrappy lol, gotta take everything off, bumper etc, and doubt theyd do it for me :(

Re: Only one cooling fan is coming on

Posted: Fri Jun 04, 2010 5:31 pm
by steve_earwig
At least you'll get some practice in on a car it doesn't matter about :wink:

Re: Only one cooling fan is coming on

Posted: Fri Jun 04, 2010 5:41 pm
by omega
got a set of fans here if you close to me

Re: Only one cooling fan is coming on

Posted: Fri Jun 04, 2010 5:49 pm
by jason1987
im in bristol, spose its not urgent as the car still cools down, just on one fan, or is this bad for the car?

Re: Only one cooling fan is coming on

Posted: Fri Jun 04, 2010 6:24 pm
by teamster1975
jason1987 wrote:im in bristol, spose its not urgent as the car still cools down, just on one fan, or is this bad for the car?
I ran mine with only one fan for a year, didn't seem to do it any harm. You can get the fans out without removing the bumper, the rad shroud can be a bit of a pig.

Re: Only one cooling fan is coming on

Posted: Fri Jun 04, 2010 7:46 pm
by jason1987
so how do i know which motor to get? as prob be diesel 406 at scrappy or a 1.8 16v etc, i need one for a sri turbo