combolc

I relocated my Vacuum pump with OR fab kit so I can install winch.

How do I know if it is working correctly?

What does the pump actually do ?

Thanks

3min3m2

In my understanding, brakes are still vacuum operated/assisted. Can you stop the vehicle?

Cordur

This is what I was told at the service department. The vacuum pump is there to give added power when braking under emergency situations. It's a part of the BAS or PBS (Brake Assist System or Panic Braking System) and is included in all of the chryslers vehicles that have the 3.6L engine. I was also told that relocating mine as I had done had voided my warranty on the pump, though I argued it for quite some time.

I had inquired about this as I can hear the pump run a couple of times after releasing the brake pedal during a cold start. Rather annoying with how loud it is and has probably always done this except that it was up under the bumper before where I couldn't hear it. Service manager said that unless I heard it running all the time not to worry about it.

ronjenx

The reason the 3.6L engine has to have a vacuum pump is the engine doesn't make enough manifold vacuum under some conditions, due to the variable valve train. The pump is added to ensure there is always enough vacuum to operate the various systems that require it, especially the brakes.

combolc

Yes it can stop.






Will it throw a CEL if not functioning correctly?






So I should be able to hear a noise coming from the pump? I guess that would be an indicator of it functioning but I don’t want to hear it run frequently? Correct?



Thank you all

Cordur

I hear it run twice for a few seconds when I first start it up and only when I use the brake pedal. Otherwise I've never heard it.

Also, I believe is was around $400 to get a new one. Best to treat it nicely.

combolc

Thanks, I will try to listen.


Any one else have any idea how I can verify this works?

ronjenx

You can tap a vacuum gauge into the line off the pump. You'll be able to monitor it all the time.

justinstoffregen

Have your maid check it out. She should be an expert on vacuums.
Seriously though, did you figure it out?

combolc

Checked all the wires again to make sure. All connections are good, so I can only assume. Have yet to hear any noises.