855 coolant loss,windscreen trim question

[MoVolvos]

hi all as title im seeking guidance for troublesome volvo aka "leaky" which constantly has leaks ever since i bought it nearly a year ago,the passenger footwell is full of coolant and i believe rainwater combo.
i have so far done every single hose on the engine and replaced both heater matrix and deleted the troublesome bulkhead coupling in favour of direct fit heater hose all thats left of the original pipe work is the cut down section of metal pipes that attach to the matrix,all new and volvo o rings.
so 2 questions?
1. how is coolant still getting inside the car and same passenger footwell puddles?are there any other connections between the inside and out im missing ie on ac?
2.i want to use some seek and seal on the windscreen but need to remove the plastic trim that cover parts of the windscreen where it seals some seems to be under the front wing and im unable to see how it is secured,it looks fragile so i do not want to guess and destroy it! thanks for any advices,duke.

Not sure if the 855 is the same setup as the S70 but mine took 3 tries in order for it not to leak. Since you have such a large mess perhaps the new heater core is leaking and you've overlooked it? The O-Rings can easily pinch / shear / flatten so check that out also.

viewtopic.php?f=1&t=59506&p=303763&hili ... re#p303763

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[rguzz]

I'd go for the dye and a good look for what might be FRESH coolant loss from all possible areas, start over in other words.
If no evidence for that do a head gasket test as has been suggested, whatever your favorite may be. Yes, the small 0 gaskets around the windshield washers are buggered on mine as well. Good luck, frustrating but you'll find it. Throw plastic over the windshield, sunroof when it rains heavily ! Temporarily, of course, though I've been doing that for years now.

[volvolugnut]

If you determine the leak is from the cowl, check this post viewtopic.php?f=9&t=92152&p=526429&hili ... ak#p526429.
I had a cowl seal leak and made a cover to redirect water to the side and not down the fresh air inlet. It is working well after 18 months. Your 850 may be different than my V70. Also right hand drive.
volvolugnut

[duke1]

hi all thanks for the replies well today i investigated under the cowling the wiper arms was a little tricky to get to release one was easy with a small puller,the other the bonnet is in the way no matter what angle the puller would slip,so i modified the tool slightly and as a 2 legged puller it just fit enough to release them,under the cowling was surprisingly clean and i found only a tiny puddle under the cover on the opposite side to my leaky patch but hoovered out the lot and flushed all 4 drain pipes.
i have put it all back together went of for tea and search my shed for the magnet on a stick to recover the damn screw that fell out right down the side of the fusebox,having only 1 proper working hand sucks sometimes
also noted that the general sort of condensation ie mostly water is what is getting in and not coolant as a taste test confirmed,so the coolant loss is likely the headgasket and is being lost via the exhaust?
the car runs perfect and as said the sniffer test was suspect as the car was running over an hour and the fluid remained unchanged until i proper revved the engine and then had slight blueish tinge,did same again after the fan cut in and out,no colour change,thoughts anyone ?
cheers