I seem to have a noise (a bit like a dull tin can rattling sound, or maybe a bit like water with air in it trying to get through a pipe). It seems to be coming from under the plastic trim (exterior) where the wipers are, under the windscreen, both sides. This seems to be the only place you can really here it, if you put your ear up to this trim! Any help really appreciated guys. I have only just noticed it, so am not sure if it has always been there!

air in your heater matrix i'd reckon....need to top up the system whilst parked on a steep incline...rad cap off and rad bleed screw...run the engine turn heater on full @40c as well.... once the engines warm the thermostat will open...any trapped air should travel up to the rad neck

air in your heater matrix i'd reckon....need to top up the system whilst parked on a steep incline...rad cap off and rad bleed screw...run the engine turn heater on full @40c as well.... once the engines warm the thermostat will open...any trapped air should travel up to the rad neck

 

Thanks. Do you mean with the car facing up the incline? Does the engine have to be cold (ie left overnight) before topping up/bleeding properly? I have just had the system drained for some engine work, and I don't think they bled it properly, she is also running hotter than before the work, although they drained my 'Water Wetter' out, and I haven't put any more in yet!

Sounds identical to the problem I had and if it is Im gonna save you a lot of grief & cash! I had the same noise on my nearside only and thought it was the turbo spindle but only when the car was at idle. After purchasing a replacement turbo and a lot of thinking...maybe I shoulda done them in reverse order :headvswal I finally found the problem...it was condensation in the rubber pipe inside the n/s wing that goes into the valve there, I removed the pipe drained the water...no noise. Some weeks later the same happened so have since removed the whole valve set up & pipes and blocked the vac pipe inside the engine bay. Forget the name of the valve but its the one that sends air to the cats. I hope this helps ya matey.

it's the AIV's

Sounds like HONK! :smw:

Thanks. Do you mean with the car facing up the incline? Does the engine have to be cold (ie left overnight) before topping up/bleeding properly? I have just had the system drained for some engine work, and I don't think they bled it properly, she is also running hotter than before the work, although they drained my 'Water Wetter' out, and I haven't put any more in yet!

 

 

oh yeah deffo facing up the incline....can take a bit of time for the system to purge itself of all the bubbles etc so take plenty of coolant / water as you might have to rev the engine a little to get the bubbles out and lose some coolant in the process as it burps outs...but you do need a cold engine to start otherwise you'll have a blast taking the rad cap off...if like me you dont have a hill close enough for the engine still to be cold when you get there then take a paper and read that for 15-20 mins whilst the rad cools enough to remove the cap safely......that said your noise could be AIV's as above but doesnt hurt to have a proper fill up anyway...peace of mind and all that

Cheers for al ur help guys, sorry for delay in replying, but having to come to library to use computer right now, as mines down!