I don't know if you are still looking for an answer, but I had what appears to be the exact problem. I replaced the MAS and still no change. I cleaned the throttle body, and no change. But on the advice of a Volvo specialist, I removed thee idle air control valve and cleaned it, and when I replaced ...

I am looking to replace the stock calipers, pads and rotors on my 2001 S40. Can anyone suggest components and suppliers?

I have an S40 with a heater that works intermitently. On cool mornings if I start the car then turn it off immediately, the heater will work on the restart. I have a check engine light, which may or may not be related; when I had diagnostics run the code indicated that there was a thermostat issue. ...

I have a 2001 S40 that was running pretty well, but with some hesitation, which had me thinking that the Mas Airflow Sensor was faulty. When I started my car the other day to drive home from work, it started fine, but as soon as I removed my foot from the accelerator it stalled. I managed to get it ...