Hey I have a vauxhall astra 2006 1.6L, around 2/3 days ago as i was driving it I began to hear this strange ticking/pumping noise coming from the engine/top of the dashboard (I can't seem to pinpoint the exact location) now this noise is not a constant noise it seems to just happen every couple of minutes. At first i thought it could just be the engine warming up but after an hour of driving it would still do it, its very hard to explain the noise but it would sound like a THUD about 4-5 times then stop and do it again 2-3 minutes later. It now even seems to be doing it even when the engine is switched off, which is kinda worrying. I was just wondering if anyone had any advice on what it could be. Its hard to say if its electrical or not.
Now this is my first post ever in a forum so apologises if it is a bit vague, but any help would be appreciated thanks
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