2005 Citroen Xsara Picasso fan noise when press gas pedal

No idea what that would be without a lot more info . If it does it as you say when you rev the engine , lift bonnet and get some one to rev engine and see if you can locate noise / area it's coming from

When you start the car and go to take off it sounds like a fan , same as if rev it

Once you build bit of speed up on 3rd gear can’t hear it anymore.

But Everytime start and take off the noise still there.

I have had new clutch replacement , filters , spark plugs etc only thing left I can think of it being is belt or alternator I was told by friend.

I’m new to all this lol and cars isn’t my strong suit. I can fix standard stuff that’s all 😂

Thank you very much for your response buddy. Really appreciate it.

Does the noise disappear when you dip the clutch ? if it was an alternator or belt noise it should be there all the time . Is the air filter box fitted and sealed o.k and no hoses off , PCV valve o.k ?

Yes clutch all good when dipped , air fliter box is fitted and secure / sealed , all hose pipes connected and leak free.

I had new clutch fitted 2/3 weeks ago still they’re just baffled on what it could be

Alternator and belt only 2 left I was suggested on

Does the noise disappear when you dip the clutch ?

when dip clutch no noise but soon as I press accelerator the noise comes but once you hit around 30 mph or 3rd gear noise isn’t there just repeats Everytime start car an drive again.

It sounds like a clutch release bearing noise or gearbox / layshaft bearings . Take it they checked gearbox oil level .

I’m not 100% sure checked or not. If that’s a possibility Il get that checked asap.

Couple mechanics said nothing to do with clutch or anything so that’s why I thought last 2 options be alternator and belt but if gearbox is a possibility then Il take it to another mechanic shop and have them look at it and see. And ask to check gearbox oil level and lay shaft bearings

" Couple mechanics said nothing to do with clutch or anything "
So what did they say noise was , A lot easier to locate and diagnose any noise when you have the car there to check out ,

Also check for exhaust . exhaust manifold / gasket leaks

They said checked clutch , bearing , fly wheel etc and was fine

I’m no where near mechanic so I haven’t a clue. But in their words pretty much , clutch is fine no issue , car drives fine they don’t know where noise coming from as everything works as it should.

I said to them car drove with no noise then clutch started making crunching noise when pressed it and then that noise came in so I got whole clutch kit replaced and then noise still there as I got it replacment with all new parts they said not the clutch , fly wheel , bearing etc. so at that point going by what they said I have now run out of ideas of what is causing it.
Now car drives fine doesn’t cut off , jerk or smells etc. bad going up hills but other than that car is grand. Just that noise is annoying and I want to fix it lol.

Mechanics in Belfast mate 90% are con artists other 10% would need to mortgage your home to deal with them lol. Hard to find someone good and reliable and trustworthy.

Now there might be problem with exhaust I was told front box starting to tear away but should be fine for while but replace it as soon as possible so doesn’t get worse.
I had a look and can see litter coat or casing starting to come off rust etc but other mechanics said not that causing the issue. But I know I do need to replace front box of the exhaust.

A lot of cowboys about who call themselves mechanics and give the trade a bad name at times . The nearest some will ever be to a mechanic is if they slept with one . Really good ones are like hens teeth to get . Pity you cant get someone that could road test and pinpoint the noise . Good ones are often recommended by friends and word of mouth . Sorry cant be of more help , hope you get it solved , best of luck