I have a 2005 Volvo s40 and tonight I have my first issue. After I had parked and went inside, I went back out to grab a bag. The car was off yet there was something that sounded like a small pump or motor running with an occasional popping sound.

I went through the fuses under the hood and started pulling them one at a time (replacing it after I pulled it) until I finally pulled the one that made the sound stop. It was fuse #36 Engine Control Module (ECM) 10A. I left it out so whatever it is won't run my battery down overnight. If I plug it back in, the sound starts again.

The display inside said something about a problem with the Anti-Skid and to take it to the dealer.

Any ideas on what the problem is and how I might be able to fix it?


Things I tried first:
I started the car again and turned it off to see if that would help, no luck
I unplugged the battery to reset the computer, no luck
Playing with the fuses


Thanks for any help anyone can provide. If you can solve it for me, I will take you to see a space shuttle launch up close!

Calvin

 

Is the motor running from under the hood?
Is it a chrome pump under the hood?
If it is there should be a line connected to it follow it and fine a valve inline and unplug it and see if it stops. If so the valve is bad. I have seen that before.

 

The motor is running from under the hood, although I can't pinpoint from where, somewhere close to the engine I think.

Where would this crome pump be located?

I can fix space shuttle main engines, but cars, they baffle me...

Thanks for the help!!

 

I think it is located behind the drivers side headlight. The hose with the valve is near that area as well.
Here is what it should look like mounted in the car.