Question about Vauxhall Cars & Trucks
Problem as above
Thermo switch on the radiator may be faulty. test it with a meter if on all the time. they can just go like this.
Posted on Jan 17, 2014
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Posted on Jan 02, 2017
SOURCE: fan assembly and relays
You did something wrong, recheck those relays, bypass the relay at the relay socket, if the fans run then the relays may be wrong, are they factory relays?
Posted on Oct 19, 2008
SOURCE: cooling fan always on..
hi what year is this car, sounds like to me between 94 and 99.
if so it is the rad fan switch on side of rad, its blue with a 4 pin plug.
im sure if standing infront of car its on your right.
get back to me with the year.
Posted on Aug 17, 2009
SOURCE: Cooling fan not activating
On most vehicles, there is a thermostatic switch located on the bottom tank of the radiator that controls the electric fan.
When AC is turned on, this switch is bypassed so its failure is 'cured.'
These switches aren't terribly expensive nor difficult to replace but ensure you don't lose coolant on the ground while replacing the switch since the stuff is tasty and toxic to animals.
If you like to be able to research and or repair minor problems like this, you might consider buying the Haynes manual for your car. This will also let you approximately access what a repair might cost for labor if you can see the degree of difficulty yourself.
Haynes Buick manual
These are available at auto parts stores often cheaper than the online price. We have on for (and IN) each vehicle we own since they can be lifesavers now and then.
Posted on Feb 27, 2010
Just saw your second posting, so the temp is still above normal. Could the sensor
that controls the fan be not reading the heat properly ? The antifreeze/coolant
issue could still be relevant, so I will re-post that info. Tho.
Electric cooling fans will sometimes come on after a vehicle is parked,
(It actually heats up when stopped), but not when it is rolling down the road
because the movement is applying some cooling effect to the engine.
If the engine is not actually overheating, then the fans may be working
normally. Also, make sure your water/antifreeze mix is correct by using a
specific gravity tester. It is a tube with 4 or 5 balls, some of which will float
to give you a reading. Contrary to popular belief, More is not better when it
comes to antifreeze/coolant. It needs water to work properly. Too strong a
mix will actually make your vehicle run cold so that the temp sensors and
heater will not function properly. The engine will not achieve proper operating
temperature and may actually damage some of the components by running
it cold, affect timing, spark, etc. This could also cause the symptoms you
describe. The engine would not actually reach the proper heat threshold
until you added the extra demand of the AC heat transfer. But the first criteria
would be whether the engine is actually overheating / or in normal range .
It may be that the colder weather is allowing the sensors to come on a little
later, warming the engine and heater components a bit more than they would
in warmer weather. Would be good to know what the actual coolant temp is.
Could check that with a guage, and also check to see what temp thermostat
you are using. 195 degrees in the winter would be better, 165/180 or so in the
Posted on Dec 12, 2011
SOURCE: electric fan
It sounds like a tcs temp controll or fan sensor ,, depending on the car it should be mounted on the bottom of the raditor with a long black plug connected to it
Posted on Jun 06, 2012
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