Question about 2001 Volvo V70

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In cold weather, takes too long to get to operating temp.

Is there a way to adjust the cooling fan so that the coolant gets to operating temp more quickly. No problem in hot weather

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  • loucherry Jan 30, 2009

    Thanks for your response. I was afraid of that.I'll have to decide if I want to do it or have my mechanic do it.
    Lou

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No there is no adjusting>>, you are going to have to change your thermostat..>> go to your local auto store and the will set you up with the right one for you local climate> Replacement time 1 hour

Posted on Jan 30, 2009

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If my thermostat sensor is faulty, how can I verify that is the issue? Is that part expensive?


if the thermostat is faulty it will show up as two things
the car will overheat within 5 minutes of start up (10 minutes max) as it will be stuck closed and prevent coolant circulation
and second it will be stuck open which will be seen as taking a long time to reach normal operating temp which will be a long time if ever in cold weather and very low ambient temperatures
you call it as a thermostat sensor where it is a coolant temperature sensor which is a different unit
the sensor in this case reads the engine coolant temp and reports to the ECM so that correct air /fuel ratio can be maintained under all conditions
It also reports that the coolant temperature is too high and so the ECM turns on the fan/s to cool the radiator
They cost from around $20.00 to $80.00 ud depending on make of car , generic or genuine

Dec 16, 2015 | Cars & Trucks

1 Answer

Overheating gage when stop & go -2004 chevy tahoe


natural for engine temp to rise in Traffic - Until Themostat opens ) cooling fan sensor kicks on fan . But Antifreeze is not just a Cold weather item . Coolant is Absolutely Necessary for Hot Days . You must be full to recovery bottle setting of cold when checked prior to start up . Coolant for your make / model is Reddish - Pink colour and should have a reading of -25 thats negative 25 degrees the Lower the Better even - 50 .. Why ?? - 50 is 50 %% antifreeze / Coolant Concentrate MIX Gives Hot weather cooling Ability or very cold weather starting / winter HEAT .

Mar 14, 2014 | 2004 Chevrolet Tahoe

1 Answer

Car never reaches operating temperature (cold weather) thus little to no heat inside


change the thermostat, sounds like it could stuck open and wont allow the engine reach operating temp, also test the constant control relay module located to the right of the battery as your facing the front of the car, also test coolant temp switch it might be defective and producing a high voltage that would cause the fans to constantly operate no matter the temp. Hope this helps

Nov 25, 2012 | 2003 Hyundai Tiburon

1 Answer

I have a '98 Olds Silhouette cooling fans work when A/C is on but will not come on even when temp is above normal operating temp if A/C is off


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
warmer months

Nov 30, 2011 | 1998 Oldsmobile Silhouette

1 Answer

My 2007 Chevy HHR 2.2L, coolant temp sensor is reading that the coolant temp is 20 degrees warmer than the outside temp after sitting for over 12 hours and the operating temp gets to 214 degrees without...


Sure the engine coolant will be warmer than the outside temperture and if the car has been sitting a long time in cold weather and the outside temperture warms up it could be the other way around. The coolant temperture sensers aren't real accurate as they are a relaitive senser beween hot and cold and the numbers reported don't have to be real just the change from hot to cold and the reching of the coolant to the operating temperture. Noe it the senser doesn't read the opertating temperture coprrectly you'll have all kinds of problems. The therostaste will try to set the temperture of the water to it's set temperture and can open or close completly to get 195 degrees F. Many times if it's too cold then the stat is bad and needs to be replaced This shows up in alot of cars first thing after winter and the first onset of cold weather when the daily tempertures vary the most from day to night.

May 06, 2011 | 2007 Chevrolet HHR Special Edition

1 Answer

On my 2004 Grand Prix, my car has to be running for at least 45 minutes for some heat to work.The yellow light by the heater blinks while the blower comes on and goes off repeatedly until the light is...


It is possible that your thermostat is stuck open. Normally, the thermostat remains closed when starting cold, confining coolant to the engine block and cylinder head until it heats up. Once the coolant in the block is warm (usually within 10 minutes), the thermostat begins to open and let coolant flow into the radiator to cool it down some. A properly operating thermostat will continue to cycle until the coolant reaches the operating temperature of the thermostat--usually around 180 deg F. Then the thermostat will continue to adjust its opening to maintain that temp.

Thermostats can get stuck in both closed and open positions. When stuck closed, the engine will quickly overheat. When stuck open, the engine will take forever to warm up--especially in cold weather because the coolant is continually pushed into the radiator and cooled off before it ever has a chance to get warm. Changing the inexpensive thermostat may help correct your condition.

Jan 25, 2011 | 2004 Pontiac Grand Prix

1 Answer

Engine coolant fans staying on, no codes, engine takes excesive time to warm up in cold weather. All fluid levels good


Have the temp sensor replaced its signaling fan to run. Make sure its the temp sensor to the cooling fan though

Jan 17, 2011 | 2005 Dodge Caravan

1 Answer

During cold weather the engine runs fine but during warm weather the engine dies


Could be a problem with your intake air temp sensor or your coolant temp sensor. The most likely would be the coolant temp sensor. It may be reading cold and will make it run good as the engine is cold but as it warms it is not adjusting the air fuel ration to the proper levels making it run rough hot

May 23, 2010 | 1992 Pontiac Bonneville

1 Answer

In cold weather, does not produce heat until engine is under load and on the road. Engine temp is fine. Coolant fine. Could it be the thermostat?


flush the radiator and cooling system and refill with fresh coolant and distilled water. i know during extreme cold temps, it will take a while but try some good maintenance and see if the situation improves. happy new year

Dec 31, 2009 | 2006 Nissan Frontier

1 Answer

Coolant fan not running


when diving in cold weather fans take longer to cut in due to cold air going through radiator will keep temp down,once stationary the cold air is not being forced through and the engine coolant temp will rise

Mar 05, 2009 | 2001 Ford Focus

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