2005 XC90 No heat after serpentine belt & pulley replacement

[ElVee]

2005 XC90 with V8

I broke down Monday when the serpentine belt came loose from what turned out to be a bad pulley. Before I could pull over, the car overheated (saw the puddle of anti-freeze in the street).

So, I had the serpentine belt and pulleys replaced. All seemed fine when I brought the car home. However, this morning when I left for work (thanks to the sudden cold spell and snow flurries), I needed the heat in the car. That's when I realized that it wasn't working. I drove for about 30 minutes and just a hint of heat from the defroster but nothing from the vents. When I arrived at work, I notice the engine temp was approaching the high end. I shut the car off for about 10 minutes (It's 32 degrees this morning). I restarted the car and the engine temperature was normal. I sat idling for about 15 minutes and the temperature remained normal.

So, after close to two hours, I went down to my car to check the anti-freeze level. Nothing in the overflow, so I will need to add some.

Besides this, is there any other reason why this might be happening?

[huzzsaba]

Hi,

I would top up the coolant and see. Once you get home, check if the level has gone down and refill it to the max or min level depending on if the engine is hot or cold. You probably already know this but if you decide to top off the coolant when the engine is hot, remove the cap very slowly. Also check to see if there is any leak under the car when you get home.

Usually when I have to drain the coolant, I usually have to top it off the next day.

its also possible that the shop did not put enough coolant in the first place or didn't run it long enough after filling it up to allow the thermostat to open.

Hopefully that's all it is and nothing serious.

[ElVee]

Topped off while cold. Started car and topped off again. Ran the car for about 30 minutes and the temp stayed normal. That was the problem. Thanks for confirming.