UK-POLOS.NET - THE VW Polo Forum

Noob here. Apologies if this has already been covered, but a search didn't find it.

I have a 97 MkIV. When I lock the drivers door with the key, the entire car locks as it should and you can hear the CL vacuum pump working. However, the pump doesn't stop working and continues making its familiar whirring noise. Obviously it can't be left like this as the pump would soon fail, or more likely the battery would go flat. Has anyone else had this problem, and if so, how did you fix it? Thanks very much.

That sounds like an air leak

Check for leaks in the cl pipes. Especially the one for the fuel cap. You'll hear a hissing where it's leaking.

alexperkins wrote:That sounds like an air leak

Check for leaks in the cl pipes. Especially the one for the fuel cap. You'll hear a hissing where it's leaking.

I will do that, thanks very much. First I need to fix the hatchback door, which is stuck fast... duh. Thanks again.

alexperkins wrote:That sounds like an air leak

Check for leaks in the cl pipes. Especially the one for the fuel cap. You'll hear a hissing where it's leaking.

Well, that's EXACTLY what it was! This place is great! Thanks very much - no doubt you've saved me more than a few bob.

Glad to help

Sorry to hijack the thread but have exactly the same problem.

Is their a piping route diagram or is it easy enough just to follow the pipes from the pump. Have a habit of damaging trim when I remove bits

Thanks again

- Dave -