I know a lot of people are having this problem with their car stalling while driving and its unable to start afterwards for a few minutes only in the hot summer and spring months. Until I can find the problem I found a solution as follows.

In the past I had to drive my dads truck and it started to overheat sometimes and I would have to turn the heat on high and book it home until he got it fixed. I havent had any trouble with overheating, but i thought about this on my way to work after stalling for several days in unsafe places, I decided to try it. For the past three days I have not stalled by putting the cold or hot air on. I placed the switch at about half way where it blows but you can barely hear it and like I said it hasnt stalled in three days. I usually stick it on defrost but it will keep it from stalling at any temp setting but it needs to be about half way.

Hope it works for you, let me know!

 

I hate to pour water (no pun intended) on your newly found solution.

This must be purely co-incidental as I can't see for the life of me how running the vehicle heater at half speed has prevented your car from stalling (i.e. assuming your vehicle is fitted with a normal Volvo heater).

I could go along with a faulty water temperature sensor causing your problem - but not a specific setting on the heater.

 

It does sound strange. I would understand if you set the heater at the hottest & full blast, as this lowers the coolant temp by a few degrees Celsius/Centigrade, which may fool the ECU.


JPN

 

Definitely strange....but if it works for you as a temporary fix, go with it!

 

IM pretty sure I need to clean up the ETC we will see. Just sharing the knowledge. As I said though this is a temp fix, and is wearing on my fan.