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Leak in roof above drivers side

Help, Advice and DIY Tutorials on Volvo's extremely popular car line -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, 850 R, 850 T5-R, 850 T5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

Houandrew
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Houandrew

Leak in roof above drivers side

Post by Houandrew » Wed May 27, 2020 6:23 pm

Hi all. Thanks so much for those who have responded to other of my issues in the past. So for this time I noticed the roof was getting wet along the a pillar above the driver’s side about 3 inches from the corner of the windshield up along the pillar. The water was mostly collecting and dripping at that corner. Thought it might be the after market windshield so did water test at corner. All good esp since water wouldn’t travel upward. Then did water test higher up and it started leaking so thought it was the weather strip on top of car because there was a gap under the strip. Today I tested the sunroof front drains and poured three bottles of water in drain above driver’s side. Water did drain onto the ground but water started leaking at roof at the 3 inch mark up from windshield along the a pillar. I think there is a leak in the drain tube. Any ideas on how hard and how much this might be to fix?

scot850
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Re: Leak in roof above drivers side

Post by scot850 » Wed May 27, 2020 7:52 pm

The drain tubes will need the headliner to be removed to get to, unless someone else can suggest how to get into them.

The drain tubes are known for sometimes splitting over the years and you getting wet. I had a leak in the same area, but in my case it was a badly fitted windshield replacement. Was made more frustrating as the car had to be in a certain position and rain direction for it to happen.

Drain tube if I recall correctly runs down the windshield pillar behind the trim. If you are lucky it may be reachable and fixable with plumbing self healing tape.

Neil.
2000 V70 R - still being an endless PITA
2006 XC70
2003 Toyota 4Runner V8 Limited
2015 Kia Sportage EX-L
1993 850 GLT -Sold
1998 V70 XC - Sold
1997 Volvo 850 SE NA - Went to niece in California - Sold
2000 V70 SE NA - New project and test bed - Sold

Houandrew
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Re: Leak in roof above drivers side

Post by Houandrew » Thu May 28, 2020 11:19 am

Thanks neil

Houandrew
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Re: Leak in roof above drivers side

Post by Houandrew » Thu May 28, 2020 11:21 am

Is it possible to just cover up the left front drain? Won’t the water drain to the left and not seep into the car?

scot850
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Re: Leak in roof above drivers side

Post by scot850 » Thu May 28, 2020 12:34 pm

You actually have 3 drains so I guess it is worth trying although you may still get wet in heavy rain or if the car is leaning that direction. Nothing really lost by trying it and see.

Neil.
2000 V70 R - still being an endless PITA
2006 XC70
2003 Toyota 4Runner V8 Limited
2015 Kia Sportage EX-L
1993 850 GLT -Sold
1998 V70 XC - Sold
1997 Volvo 850 SE NA - Went to niece in California - Sold
2000 V70 SE NA - New project and test bed - Sold

JimBee
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JimBee

Re: Leak in roof above drivers side

Post by JimBee » Fri May 29, 2020 7:41 pm

It's been a while since I cleaned my drain tubes so I'm not sure this is correct—but it's worth a try. There's a catch channel along each side of the panel to route water (that leaks around the sun roof gasket) forward or back to a front or back tube. If the sun roof window is open a lot the channels collect debris from the air, road, etc.. The debris will settle in the channels and get flushed into the tubes when there's a lot of water. Eventually, the tubes can clog.

I know you cannot get to the rear drain tubes (1 each side) without removing the headliner.

On my 850, I seem to remember that the front 2 tubes are accessible with the sun roof open and all the way back. I used a length of single strand 14 gauge (or maybe 12 gauge) insulated wire to probe from the top down all the way through to the end. That cleaned them out. I think I stripped the insulation back an inch and bent the lead end of the wire so it would slip easily through the tube. Worked well.

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