[musclesmarinara75]

Hey guys..I got home this morning..pulled car in garage and this loud noise..sounded like a constant beeeeeepppp just was coming out of my engine bay for about 5 minutes..thought it was the PCV system..but I took off the oil fill cap and hit the brake a few times..the noise just stayed constant... I uploaded 2 vids to you tube..any ideas at all ???

https://youtube.com/shorts/SsookUGSdQI?feature=share


https://youtube.com/shorts/h-13PXXjkMM?feature=share

[Unspec]

Might be the water pump?

[musclesmarinara75]

Originally Posted by Unspec

Might be the water pump?

Nope cannot be water pump...for 2 reasons...I just changed it and....forgot to say in the description..car was off..ignition off...then I went back and hit the start/stop..it actually got lower in the one video

[Hoa]

It could be the throttle body

[musclesmarinara75]

Originally Posted by Hoa

It could be the throttle body

What would I check on the throttle body??

[ezaircon4jc]

My 2014's been doing that since 3/17. It doesn't happen all the time and usually after I've driven the car, let it sit awhile, when it's cooler outside than in the garage and I open the garage door. My dealer hasn't been able to replicate it so they can't fix it. I found a BMW mechanic online (can't remember off-hand who it was) who said it's some kind of a pressure equalizing valve (something like that) in the A/C system. After almost 5 years there has been no apparent effect on the climate control. I also always use the automatic function.

[musclesmarinara75]

Originally Posted by ezaircon4jc

My 2014's been doing that since 3/17. It doesn't happen all the time and usually after I've driven the car, let it sit awhile, when it's cooler outside than in the garage and I open the garage door. My dealer hasn't been able to replicate it so they can't fix it. I found a BMW mechanic online (can't remember off-hand who it was) who said it's some kind of a pressure equalizing valve (something like that) in the A/C system. After almost 5 years there has been no apparent effect on the climate control. I also always use the automatic function.

Well good to know, because one of the guys from Kies Motorsports said roundabout same thing and he had similar thing happen and said it wasn't anything to worry about

[Hoa]

Originally Posted by musclesmarinara75

What would I check on the throttle body??

Nothing to really check. I've seen it in several different cars. It will stop if you lock the vehicle. Usually it's the motor inside the throttle body that makes the noise

[musclesmarinara75]

Thanks for that info Hoa, noise has not came back since

[Cali_MSport]

I have had cars do this in the past and it has been the fuel system causing the issue. It would occur after driving and it would stop instantly if i took off the gas cap. Removing the gas cap would cause pressure to suck in not out as you would think it would do. It was some kind of vapor lock or something but you may wanna remove the gas cap while its happening and see what it does. Hope this helps you and good luck.

[musclesmarinara75]

Originally Posted by cali3series

I have had cars do this in the past and it has been the fuel system causing the issue. It would occur after driving and it would stop instantly if i took off the gas cap. Removing the gas cap would cause pressure to suck in not out as you would think it would do. It was some kind of vapor lock or something but you may wanna remove the gas cap while its happening and see what it does. Hope this helps you and good luck.

Thank you, Iwill try that if it happens again, hasn't done it so far

[ezaircon4jc]

Originally Posted by Hoa

Nothing to really check. I've seen it in several different cars. It will stop if you lock the vehicle. Usually it's the motor inside the throttle body that makes the noise

Originally Posted by cali3series

I have had cars do this in the past and it has been the fuel system causing the issue. It would occur after driving and it would stop instantly if i took off the gas cap. Removing the gas cap would cause pressure to suck in not out as you would think it would do. It was some kind of vapor lock or something but you may wanna remove the gas cap while its happening and see what it does. Hope this helps you and good luck.

I've read both of those suggestions and tried them both; it had no effect.

This is the guy that told me it was a valve in the climate control:

https://bmwtechnician.com/

[musclesmarinara75]

Thanks...but I might have bigger fish to fry soon...