Just replaced a cracked radiator and was worried that burping the system was gonna be a pain. But this is easy! Thanks robert your videos have helped countless times
😁As ever, a clear, detailed and thorough explanation, covering all aspects of the cooling system. A particular point of interest is that the system is NOT pressurised, other than that created by expanded heated coolant. Thank you !
Thanks Robert. Very informative. I'm dealing with my upper radiator hose -- it keeps blowing off. New hose, oem clamps, new reservoir cap. Car has never run better however (even with this issue) and I've owned it for 23 years. Appreciate all your great videos.
Isn’t the pressure is released when opening the cap? you can hear it hiss and also the coolant level rises after removing the cap. If the system is sealed and the coolant heats up inside, it becomes pressurised because hot coolant takes up more space than cold coolant.
Top video. Just came back from Italy (NL) and noticed that my engine fan didn't work, even with the airco on. As you explained, the sensor might be the prob'
Hello. I have recently purchased a 98 volvo v70 glt. It has a overheating issue. Ive replaced the waterpump, thermostat, and the radiator with a do88 performance rad BUT it still overheating. Could it be a improperly installed head gasket?
Quick question Robert, 2012 Volvo S60 t5...122k miles Overheating...due to rad fan not running....at all. My question is : does the thermostat have any bearing on whether or not the fan comes on via a sensor or whatnot ? Thanks
I have a 2004 V70 2.4 liter station wagon and had to replace thermostat because prior maintenance person did not put gasket on housing secure enough...started drip leak. I have replaced the thermostat with the half of housing and gasket on the half attached to block. I refilled the radiator through top hose at engine end and reattached and refilled reservoir. I am worried that the fluid is not filling the head on the engine because I did not see much fluid removed from reservoir after short trips. Any suggestions on how to be certain fluid has filled the head?
Like, right before it blows the head gasket? The magic number is 265F for non-pressurized systems for all cars. What blows the head is when the coolant boils. A good coolant mix will boil at 265F. I've had my car at 257F and it didn't blow the head gasket or damage the engine.
Hello Robert my mame is mario I replaced thermostat on my 1997 850 becouse I thought that was the problem the temperature gauge was going to red line and now the temperature gauge goes to red line when cooling fan turns on I don't know what else to do I'm trying to save some money and do it myself but I don't know what else to do thanks in advance have a good day
I recently replaced my coolant tank and thermostat but my radiator fan doesn’t come on when it exceeds it’s temperature and I was just wondering what could be the problem
Hey Robert. My temperature gauge isn’t rising to operating temperature and my fan isn’t coming on. If I’m idling for too long my coolant starts to boil! I checked the fan with 12v and it works well I also tested the thermostat and the temperature gauge. Any idea what the problem could be?
@@RobertDIY Robert, king of Volvos. I changed the ECT for a official Volvo one. Fixed the issue. I cleaned the terminals with isopropyl alcohol and I’m now getting a good temp reading. But the issue remains the fan still isn’t kicking in and it feels like no liquid is circulating from the radiator. Any next step tips? Drew
Hi Robert.My 1998 Volvo V70 2.0t behaves strangely! On the open road I do not lose cooling fluid, and when driving slower off the road, on the bottle cap that is new, liquid comes out, the thermostat is new and installed correctly, as well as the engine temperature sensor and its connectors! Specifically yesterday I drive 80km on the open road without any loss of fluid, and it was in a bottle a little above "MIN" when it was cold, but today off the road at a speed of 10-20km / h some 3-4km when I opened the hood with with the engine running, water was leaking from the bottle cap, when the fan started, it stopped! But it is impossible to open the cap then! I need your opinion ??? Thank you ! Greatings from Serbia.
The fan is always running when the key is on and runs for a good minute when I turn the car off it will do this hot or cold it's very annoying I am guessing the temp sensor is the culprit
As an onwer of a Volvo v70 XC '01 (P2), I have tried to open the water reservoir while the engine was hot and liquid spilled. In the mean time I have found a fluid leak on the heater cord to the interior, which get the pedal floor wet. Can this be the culprit of the fluid spilling and accumulating pressure, or should I check the head gasket more? The glove test was passed with no problems and maintenance was just done (all filters and oil).
Change the heater core. If it's leaking, the only solution is to replace. Could also be the connections. If it hasn't been changed in over 10 years... it's time.
As explained in SEVERAL of my videos, the cap should NOT be removed with the engine OFF. You should be able to SLOWLY remove the cap WITH THE ENGINE HOT AND RUNNING.
Hi mate 2005 s60 2.0T had a leak in the pipe coming from the reservoir and it emptied the coolant. I fixed the pipe and topped back up with coolant. now it’s sometimes struggling to start when cold and when it does start it sits on about 500rpm for a second or two then kicks in normal and will run perfectly. It seems fine when the engine is hot I was wondering if you had any idea what it could be
My cooling fan only runs when the ac is on and for only 5 seconds then shuts down and starts again for 5 seconds, but when i turn the ac off noting happens
Buenas tardes Robert, soy Alex de Mexico tengo una volvo V70XC cross country año 2001, le cambi termostato, sensor ECT , el ventilador prende a los 221 grados Fahrenheit y al llegar a los 210.3 grados Fahrenheit se apaga, baja la temperatura a 203grados Fahrenheit y vuelve a iniciar el ciclo. entu video indicas que debe prender a los 216 grados Fahrenheit y apagarse a los 206 grados Fahrenheit. en mi caso es normal o que es lo tengo que revisar para que prenda y apague a la temperatura del video 216 -206 grados Fahrenheit. saludos
hey robert, when i have been driving my volvo 850 2.5t '96 and i turn the engine off i hear the reservoir cap hiss softly. Do you know what this could be?
Hi Robert. i need your help regarding a pressure problem i have on volvo v 70 year 2002. the cooling circuit gains pressure after the car is stopped after 2 to 3 days. So, after that time, I find the water expansion vessel full and liquid on the floor, so the coolant comes out through the lid. I inform you that I changed the thermostat, water pump, the engine head was rectified, the radiator is only 2 years old and the water pipe that falls from the thermostat to the radiator is also new. I tried to release air through the expansion vessel lid as soon as the thermostat opens and the fans do too. the water level then drops and then when heating the water the level rises to the maximum and I cover it again with the lid. I also inform you that I took the new cell gasket and the coolant is the appropriate one for direct use. Can you help on that? Tks
My temp gage only moves up 2 lines from the bottom while driving. It's 30 degrees most mornings warm car up will defrost windows but never gets super warm in car. Do you think my thermostat is stuck open.
Hey great video! Got a question, recently went to a mechanic to replace a cracked radiator and put in new coolant. All is well, when the same evening the fan went on when starting the car on an ice cold engine. It prevented the car from getting warm! Coolant temperature was low as hell and didn’t circulate through the upper hoses (thermostat closed?). Tried driving for 30 minutes, revving it a few times up to 3000rpm and nothing happened. The fan even went on to blow for 5 minutes after turning the car off. Next morning I get in, start the car, fan still starts blowing immediately! Going to the mechanic and halfway it turns off. Car gets warm and mechanic can’t see nothing wrong. Since then everything has been fine. He suspects a thermostat that is unhealthy and didn’t open all the way, but that doesn’t explain the fan starting on an ice cold engine. What can it be? Wanna know so it can’t happen when I go on a trip. Mechanic said all plugs were in okay and he didn’t break anything when replacing the radiator.
@@RobertDIY hey there, sorry I was probably so tired when writing that I forgot to mention the car lol. It’s a V70 2.4 from 2000 (first type) with 170hp. Thanks for the tip I will check if any connectors are damaged. Must say that last few days it didn’t happen after unplugging the battery and reconnecting it.
Just replaced a cracked radiator and was worried that burping the system was gonna be a pain. But this is easy! Thanks robert your videos have helped countless times
Awesome, thanks for watching
Thanks Robert! Replacing my radiator cooling fan. Watching the rest of your helpful videos on the cooling system.
Cool, thanks
😁As ever, a clear, detailed and thorough explanation, covering all aspects of the cooling system. A particular point of interest is that the system is NOT pressurised, other than that created by expanded heated coolant. Thank you !
Thanks for watching
Thanks Robert. Very informative. I'm dealing with my upper radiator hose -- it keeps blowing off. New hose, oem clamps, new reservoir cap. Car has never run better however (even with this issue) and I've owned it for 23 years. Appreciate all your great videos.
ruclips.net/video/WXOHjePUWkU/видео.htmlsi=E9YYRCZLbDm0BHry
Perfect timing Robert. Just got a new (Volvo!) Thermostat and temp sensor for the '97 T5. Thanks.
Nice.
ruclips.net/video/U7lxJ96KdTg/видео.html
Another truly helpful video. I’m gunna be building up my Volvo to do new things in the US and these videos are so great to have
thanks for watching.
As usual great information about our cool cars Robert..much appreciation 👍😁
thank you for watching.
Excellent information. To be honest, I thought all cooling systems were pressurized. Thanks for setting me straight!
In my manual to my volvo 850 1997 it says: cooling system: sealed pressurised.
Awesome! If you can pull the cap off of the reservoir with the engine running, is it pressurized?
Isn’t the pressure is released when opening the cap? you can hear it hiss and also the coolant level rises after removing the cap. If the system is sealed and the coolant heats up inside, it becomes pressurised because hot coolant takes up more space than cold coolant.
Top video. Just came back from Italy (NL) and noticed that my engine fan didn't work, even with the airco on. As you explained, the sensor might be the prob'
Hope you get it worked out.
Greetings from Prague, Czech republic... I really like your videos :-)
Glad you like them!
Looks like the weather is nice! Great info.
That video was filmed last summer in VA. LOL
Have you ever wonder what position thermostat should have be placed in.
Which way round? Does it matter to that air release valve?
As explained in the thermostat video, 1 o'clock.
ruclips.net/video/U7lxJ96KdTg/видео.html
Thanks and sorry I havent see it
Hello. I have recently purchased a 98 volvo v70 glt. It has a overheating issue. Ive replaced the waterpump, thermostat, and the radiator with a do88 performance rad BUT it still overheating. Could it be a improperly installed head gasket?
ruclips.net/video/BtdifArSU3Q/видео.html
ruclips.net/video/WXOHjePUWkU/видео.html
Bless you sir
Thank you
Is this relevant for the 960 from 1995?
yes
Thank you!
2008 Ford fusion my fun turn on when the car is on but when I turn on my AC my fan doesn't turn on high..it stay on low.
Interesting
ruclips.net/video/gt9w-ZSxs9I/видео.html
ruclips.net/video/Wj9drUd8Ifk/видео.html
Quick question Robert,
2012 Volvo S60 t5...122k miles
Overheating...due to rad fan not running....at all.
My question is : does the thermostat have any bearing on whether or not the fan comes on via a sensor or whatnot ?
Thanks
No, the thermostat is mechanical. It doesn't know if the fan works or not, only the temperature of the fluid running through it.
thx again
You are welcome
Should I start saving up for a 850 r wagon for my first car? Or is it not a smart move
I would not purchase a vehicle that I didn't want.
Are there coolant lines going to rear of my 1999 s70
rear of what?
I have a 2004 V70 2.4 liter station wagon and had to replace thermostat because prior maintenance person did not put gasket on housing secure enough...started drip leak. I have replaced the thermostat with the half of housing and gasket on the half attached to block. I refilled the radiator through top hose at engine end and reattached and refilled reservoir. I am worried that the fluid is not filling the head on the engine because I did not see much fluid removed from reservoir after short trips. Any suggestions on how to be certain fluid has filled the head?
This video explains all that I know. Once the engine has cooled off, fill it and it should be good.
what's the maximum engine coolant temps for the 850R turbo?
Like, right before it blows the head gasket? The magic number is 265F for non-pressurized systems for all cars. What blows the head is when the coolant boils. A good coolant mix will boil at 265F.
I've had my car at 257F and it didn't blow the head gasket or damage the engine.
Hello Robert my mame is mario I replaced thermostat on my 1997 850 becouse I thought that was the problem the temperature gauge was going to red line and now the temperature gauge goes to red line when cooling fan turns on I don't know what else to do I'm trying to save some money and do it myself but I don't know what else to do thanks in advance have a good day
ruclips.net/video/BtdifArSU3Q/видео.html
So it’s normal for it to run this hot?
what hot?
I recently replaced my coolant tank and thermostat but my radiator fan doesn’t come on when it exceeds it’s temperature and I was just wondering what could be the problem
ECT sensor, bad fan or bad relay.
Hey Robert. My temperature gauge isn’t rising to operating temperature and my fan isn’t coming on. If I’m idling for too long my coolant starts to boil! I checked the fan with 12v and it works well I also tested the thermostat and the temperature gauge. Any idea what the problem could be?
Forgot to mention it’s a 1996 Volvo 850 T5
ECT.
@@RobertDIY Do you know the specific one Volvo uses or would I be able to use any compatible type from a auto parts shop?
@@RobertDIY Robert, king of Volvos. I changed the ECT for a official Volvo one. Fixed the issue. I cleaned the terminals with isopropyl alcohol and I’m now getting a good temp reading. But the issue remains the fan still isn’t kicking in and it feels like no liquid is circulating from the radiator. Any next step tips?
Drew
What if the coolant cap does come off with a running hot engine. Does that mean the head gasket is good.?
As explained in the video, yes.
ruclips.net/video/WXOHjePUWkU/видео.html
Hi Robert.My 1998 Volvo V70 2.0t behaves strangely! On the open road I do not lose cooling fluid, and when driving slower off the road, on the bottle cap that is new, liquid comes out, the thermostat is new and installed correctly, as well as the engine temperature sensor and its connectors! Specifically yesterday I drive 80km on the open road without any loss of fluid, and it was in a bottle a little above "MIN" when it was cold, but today off the road at a speed of 10-20km / h some 3-4km when I opened the hood with with the engine running, water was leaking from the bottle cap, when the fan started, it stopped! But it is impossible to open the cap then! I need your opinion ??? Thank you ! Greatings from Serbia.
ruclips.net/video/WXOHjePUWkU/видео.html
The fan is always running when the key is on and runs for a good minute when I turn the car off it will do this hot or cold it's very annoying I am guessing the temp sensor is the culprit
temp sensor or MAF. Our MAF had a broken wire at the connector.
As an onwer of a Volvo v70 XC '01 (P2), I have tried to open the water reservoir while the engine was hot and liquid spilled. In the mean time I have found a fluid leak on the heater cord to the interior, which get the pedal floor wet. Can this be the culprit of the fluid spilling and accumulating pressure, or should I check the head gasket more? The glove test was passed with no problems and maintenance was just done (all filters and oil).
Change the heater core. If it's leaking, the only solution is to replace. Could also be the connections. If it hasn't been changed in over 10 years... it's time.
As explained in SEVERAL of my videos, the cap should NOT be removed with the engine OFF. You should be able to SLOWLY remove the cap WITH THE ENGINE HOT AND RUNNING.
If the heater core is leaking, have it replaced before you blow the engine.
Hi mate 2005 s60 2.0T had a leak in the pipe coming from the reservoir and it emptied the coolant. I fixed the pipe and topped back up with coolant. now it’s sometimes struggling to start when cold and when it does start it sits on about 500rpm for a second or two then kicks in normal and will run perfectly. It seems fine when the engine is hot I was wondering if you had any idea what it could be
ruclips.net/video/Jc4pfC3D3EU/видео.html
ruclips.net/video/gt9w-ZSxs9I/видео.html
My cooling fan only runs when the ac is on and for only 5 seconds then shuts down and starts again for 5 seconds, but when i turn the ac off noting happens
probably a bad relay.
Buenas tardes Robert, soy Alex de Mexico tengo una volvo V70XC cross country año 2001, le cambi termostato, sensor ECT , el ventilador prende a los 221 grados Fahrenheit y al llegar a los 210.3 grados Fahrenheit se apaga, baja la temperatura a 203grados Fahrenheit y vuelve a iniciar el ciclo. entu video indicas que debe prender a los 216 grados Fahrenheit y apagarse a los 206 grados Fahrenheit. en mi caso es normal o que es lo tengo que revisar para que prenda y apague a la temperatura del video 216 -206 grados Fahrenheit. saludos
Su vehículo fue programado para circular a diferentes temperaturas. Está funcionando correctamente.
@@RobertDIY muchas gracias por la respuesta ahora se que es normal. Saludos
hey robert, when i have been driving my volvo 850 2.5t '96 and i turn the engine off i hear the reservoir cap hiss softly. Do you know what this could be?
Normal. Once the engine is off, the system pressurizes. You may need a new cap.
@@RobertDIY Thanks Robert👍🏻
Btw , I did do a block test kit and liquid never changed colors so I assume head and gasket are fine.
ok
Hi Robert. i need your help regarding a pressure problem i have on volvo v 70 year 2002. the cooling circuit gains pressure after the car is stopped after 2 to 3 days. So, after that time, I find the water expansion vessel full and liquid on the floor, so the coolant comes out through the lid. I inform you that I changed the thermostat, water pump, the engine head was rectified, the radiator is only 2 years old and the water pipe that falls from the thermostat to the radiator is also new. I tried to release air through the expansion vessel lid as soon as the thermostat opens and the fans do too. the water level then drops and then when heating the water the level rises to the maximum and I cover it again with the lid.
I also inform you that I took the new cell gasket and the coolant is the appropriate one for direct use.
Can you help on that? Tks
is the cap damaged?
ruclips.net/video/WXOHjePUWkU/видео.html
The cap is a new one from volvo
😎 cool
My temp gage only moves up 2 lines from the bottom while driving. It's 30 degrees most mornings warm car up will defrost windows but never gets super warm in car. Do you think my thermostat is stuck open.
@@scottmiteen4772 yes
thanks for watching.
Does it have a thermostat installed?
Hey great video! Got a question, recently went to a mechanic to replace a cracked radiator and put in new coolant. All is well, when the same evening the fan went on when starting the car on an ice cold engine. It prevented the car from getting warm! Coolant temperature was low as hell and didn’t circulate through the upper hoses (thermostat closed?). Tried driving for 30 minutes, revving it a few times up to 3000rpm and nothing happened. The fan even went on to blow for 5 minutes after turning the car off.
Next morning I get in, start the car, fan still starts blowing immediately! Going to the mechanic and halfway it turns off. Car gets warm and mechanic can’t see nothing wrong. Since then everything has been fine. He suspects a thermostat that is unhealthy and didn’t open all the way, but that doesn’t explain the fan starting on an ice cold engine. What can it be? Wanna know so it can’t happen when I go on a trip. Mechanic said all plugs were in okay and he didn’t break anything when replacing the radiator.
I don't even know what kind of car you have. My guess would be that one of the connectors is going bad, wasn't making a good connection.
@@RobertDIY hey there, sorry I was probably so tired when writing that I forgot to mention the car lol.
It’s a V70 2.4 from 2000 (first type) with 170hp. Thanks for the tip I will check if any connectors are damaged. Must say that last few days it didn’t happen after unplugging the battery and reconnecting it.