Thermostat repair and coolant flush on a Volvo 850 Part 1

[@almrtnz1]

Good detailed video! I replaced my thermostat (and coolant temp sensor) last week. Finding and using this video beforehand would have alleviated a lot of anxiety on my part. Just a suggestion: Fuel line does not need to be released. I was able to fit a T45 with an extension on the rear bolt of thermostat (under fuel rail). Yes, I was at an angle, but it did work. Also, ots better to just release the lower radiator hose versus that drain cock, as it tends to break easily (plastic).

[@roguediabetic]

I have a 940 and need to change mine and I think mine's a little easier but your video is a great help anyway - thank you. One small difference to note is that the OEM thermostat for the 940's at least has a housing with a little nipple that is supposed to be facing up when installed. The thermostat for the 850 appears to lack this housing on top.

[@BackyardSpaceProgram]

If you remove the hose from the thermostat housing there's no need to remove the fuel line. Hose clamps are usually 7 mm socket. Thanks for the upload!

[@hullan666]

you should do more videos of this kind with this great and classic car! great filmed and very inspiring - you have a great voice to listan to as well

[@CraigMiller1982]

I think I just need to flush my radiator.. I just picked up a 94' Volvo 850 Turbo and love it! But it's over-using coolant and I've noticed a little debris/dirt in the expansion tank... Thanks for your video, will be flushing my radiator in the next few days! : )

[@wedginator]

@RuskyaMafia Yes, just 1 bottle of flush fluid and fill the remainder with DI water. DI water should be available at most automotive shops. Should typically be located near the coolant section.

[@motorart4670]

Did you use a torque wrench to free up te thermostst nuts? Could you please do a video on the correct jacking points and points where to put your jack stands on a Volvo 850. The haynes manual doesnt indicate which positions are safe for jack stands.

[@jcklush]

Thanks, very helpful. Just ordered thermostat to do mine.

[@dwightcarlson7136]

Is it necessary to remove the pan to access the drain plug? What size the drain plug 'o'ring?

[@mustafacaglak6044]

Even if it's a photocopy. Thank you very much.

[@tonytonylechefcarr80]

thanks for your video it helped me greatly very easy to do now,

[@WildBill1006]

Oh you must have been cold over these past few days. I know it hasn't stopped snowing up in my area for the past couple of days (Barrie) Stay warm bud

[@850are2]

Good video

[@wedginator]

@ccipherscope nope, no need to warm up the car. Best to do this while the car is cold.

[@knakker36]

I am having a little trouble with my Vovlo 850 2.5I-20V GLT (1994) At some point I noticed a big puddle under my right front tire (passenger side). I checked it out and found out it was the coolant. I filled it up with new coolant and started the engine. Everything seemed to be fine. I watched the engine run for 10 min. I noticed that the level of the coolant actually increased which surprised me. I then took it for a short drive around the block. When i stopped the car and took a look at the level of the coolant, the coolant at that point was spitting out of a crack on the coolant reservoir cap. The engine seems to run perfectly fine. Do you think this has to do with a defect thermostat? What is your opinion on this? Kind regards, Rick

[@justaturbo7017]

+Rick Winson Does your coolant reservoir have a yellow tint near the hoses?

[@knakker36]

+Conrad Hale. Problem fixed. There was a crack in the cap of the coolant reservoir. This caused the radiator too loose its pressure. Put a new cap on and the problem was solved.

[@AeroFix94]

can i just drain the radiator and fill up with new. Drive some and then drain again untill clean coolant comes out instead of draining the engine? :)

[@wedginator]

@disnukka79 Yea, sorry i tend to be like that. I'm an engineer and I have to explain things down to the very small details. I try not to do that in my videos but i tend to get carried away.

[@wedginator]

Prestone is fine for the non-turbo models.

[@aquadan63]

@wedginator I have an 07' S60 and it its not throwing out heat, if I change out the thermostat, should I also do a flush? it's got 85k mi.

[@GTVAlfaMan]

Is deionized water the same as distilled water?

[@wedginator]

@WildBill1006 It was 3 degrees when I was working on the car. The very next day was -15 with snow. Crazy stuff.

[@disnukka79]

Wow this guy takes forever to get his words out

[@wedginator]

lol. all cool bud.

[@farerse]

are you sponsored by prestone ??

[@patriciamcgirt5840]

weater is comeing back out reservoir

[@LJRossPhoto]

Your comment made me laugh. Haha :)

[@LJRossPhoto]

You used the wrong thermostat. -_-

[@wedginator]

Nope. Wish I was though.

[@wedginator]

No. Shouldn't be doing that anyway.

[@wedginator]

@ccipherscope nope, no need to warm up the car. Best to do this while the car is cold.