Plenum Chamber & Battery

**hagis** · 13-07-2009,12:59 PM

I've been hearing a watery swishing sound from the front of the car when I first move it after a lot of rain and I wanted to check the plenum chamber out.

However, when I went to take the battery out yesterday I noticed there were three wires doing into it. As well as the positive and negative terminals, there was a wire in some flexi-piping coming from the right.

Can any one tell me what this wire is and how can I remove it without damaging it please?

**Hex69** · 13-07-2009,01:09 PM

Originally Posted by hagis

I've been hearing a watery swishing sound from the front of the car when I first move it after a lot of rain and I wanted to check the plenum chamber out.

However, when I went to take the battery out yesterday I noticed there were three wires doing into it. As well as the positive and negative terminals, there was a wire in some flexi-piping coming from the right.

Can any one tell me what this wire is and how can I remove it without damaging it please?

Are you sure it's not the vent coming out to a L shaped connector?

**hagis** · 13-07-2009,01:37 PM

Vent from the battery? I'd not thought of that. It disappears somewhere under the bonnet hinge. I might try pulling out the other end and see how I go from there. Cheers Hex.

**Adam A41.8T** · 13-07-2009,03:00 PM

Is it possible that it is for an alarm or anything?

**Marco34** · 14-07-2009,10:55 AM

Just pull it off from the battery. It's just a vent.

Also, I had loads of water in mine and found the bunged hole underneath. I didn't remove the battery, too much hastle. 3 years on and all fine.

**rhencullen1989** · 14-07-2009,12:22 PM

Don't forget the other drain hole which is located below the brake servo (big black round metal part) You can just about squeeze your hand down and push a finger through the rubber grommet. Or carefully use a flexi bit of pipe etc. Use a torch for a better look.

Do not remove the rubber grommets as they stop any fumes from entering the cabin.

**hagis** · 14-07-2009,11:37 PM

Thanks for your suggestions all. I had a go tonight when I was going to top the water up for the wipers. After pulling the covers off I noticed the chamber was full of water, however, I was unable to get the bloody battery out, where is it clipped??

If I can clean the holes out without removing the battery, I'll try that first. The light was pretty poor and my torch was broken when I looked tonight so I'll try again tomorrow. In the mean time, I'm going to do a bit of research and see where the bloody holes are.

**Hex69** · 15-07-2009,09:18 AM

Originally Posted by hagis

Thanks for your suggestions all. I had a go tonight when I was going to top the water up for the wipers. After pulling the covers off I noticed the chamber was full of water, however, I was unable to get the bloody battery out, where is it clipped??

If I can clean the holes out without removing the battery, I'll try that first. The light was pretty poor and my torch was broken when I looked tonight so I'll try again tomorrow. In the mean time, I'm going to do a bit of research and see where the bloody holes are.

C'mon Hagis, you're obviously the only one on this forum who doesn't know?

http://weirdlittlebiscuit.com/passat/leak/index.htm

**Marco34** · 15-07-2009,09:34 AM

Just get your hands under the battery from the engine bay and feel around. You will come across it! Failiing that, get the water out asap by syphoning it out. I did that before I found the drain holes.

Also there is one under the power assistance servo, again some contortion will get get you there. Battery out is a last resort IMO.

Cheers
Marco

**Eshrules** · 15-07-2009,11:19 AM

Originally Posted by rhencullen1989

Do not remove the rubber grommets as they stop any fumes from entering the cabin.

fumes? cabin? how the....

I think you're looking at the wrong bungs matey.

the two bungs I cleaned out simply filled in a pair of drain holes, the only way the fumes are going are down and out?

Hagis - re the battery, the clamp is right at the front, tucked under a stupid pipe that insists on getting in your way, you'll find it though. getting the battery out of the bay is the funniest thing ever.