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cam cover liquid gasket question

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
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cam cover liquid gasket question

Post by bobsnow100 » Tue Aug 15, 2006 1:52 pm

I have a 1994 850 wagon. I am in the middle of changing a head gasket. My question is in regards to the cam cover. I have improvised the tools to hold the cams locked in the cam cover.
My first question is in regards to the liquid gasket compound that gets rolled onto the cam cover.
1. Do I install the cover with the liquid gasket compound wet or let it dry?
2. Do I have to get the special Volvo roller or can it just be brushed on thin with a small brush?

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Post by Ripper406 » Tue Aug 15, 2006 6:38 pm

I just recently changed the head gasket aswell, make sure you get the cylinder head resurfaced. About the cam cover, I just used some copper gasket spray and put the cams on the head first, then put the cover on. I saw the book says the other way around but it seemed like too much work to hold them inplace on the cover then bolt it down.

Now the problem is their is no engine rpm signal coming to the ecu so its being shady and not firing off the injectors. I cannot find where the rpm signal source comes from, im thinking the Cam Position sensor but I doubt it, I would have gotten a CPS code.
I have a 1994 Volvo 850, changed the head gasket and now the fuel injectors dont fire off, sparks good but no fuel.

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Post by MadeInJapan » Tue Aug 15, 2006 6:51 pm

Ripper, download the service manual for your car- first post in the sticky. It's all in there...diagrams, etc.
'98 S70 T5 Emrld Grn Met/Beige Tons of Upgrades Mobil-1
'04 V70 2.5T Red/Taupe Some Upgrades Mobil-1
'07 S40 T5 AWD 6 speed manual! Silver/Black Stage1 Heico & Elevate
'07 S60 2.5T Blue/Taupe- my kid's Volvo

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Post by White850Turbo » Tue Aug 15, 2006 9:38 pm

bobsnow, the liquid gasket can be applied with a small brush in a thin layer. Don't let it dry before placing the pieces back together.

Ripper, RPM sensor is located on the transmission housing. It's the one more towards the top and middle. The vehicle speed sensor is the one that looks similar, but is located further back.

1995 850 Turbo (Extensively Modded)

1998 S70 T5 (Almost Stock)

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Post by bobsnow100 » Wed Aug 16, 2006 7:15 am

Thanks all, I can now know I'm doing it correctly

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