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Re: How much should my 9-5 PCV suck? 1 Saabers Like This Post!
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Posted by SWEDECAR [Email] (#112) [Profile/Gallery] (more from SWEDECAR) on Thu, 1 Oct 2009 08:48:25 Share Post by Email
In Reply to: Re: How much should my 9-5 PCV suck?, RTSDan, Wed, 30 Sep 2009 15:35:43
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No, no good ideas. The only thing I have learned by testing all cars coming in (Volvo's and Saab's all models and engines) is that it is absolutely no rhyme or reason or guide line for the PCV pressure/vacuum in crank case as measured through the oil dipstick tube using the special gauge from Volvo.
And also, the old proven cars from the 80s and early 90s that never had any problems seems to have positive pressure than negative.

As for the Saab's with PCV #6. If you test it, just pinching off the small vacuum hose to throttle body will make the value go from -0.7 Kpa to +0.3 Kpa at idle. That's how little it takes to skew the result. So make sure the vacuum hose and check valve is ok.

And to put it in perspective if someone think they can use a regular pressure/vacuum gauge.
-0.7 Kpa = 0.2 inHg and 0.7 Kpa = 0.1 Psi so we are talking about puffs and breeze of air moving here, not sucking and pressure.

PCV pressure/vacuum readings
Warm engine, idling, A/C off

VOLVO
1992 740 B230FT +0.3 Kpa
1991 740 B230FT +0.4 Kpa
1994 940 B230FT +0.35 Kpa
1994 940 B230FT +0.3 Kpa

1994 960 B6304FS + 0.05 Kpa
1994 960 B6304FS -0.15 Kpa
1996 960 B6304FS2 +0.15 Kpa
1997 960 B6304FS2 0.0 Kpa

1999 S70 B5254S Denso -0.1 Kpa
1999 V70 B5254S Denso +0.05 Kpa
1999 S70 B5254S Denso -0.05 Kpa

1998 S70 B5254T +0.05 Kpa
1999 C70 B5254T -0.35 Kpa
1999 S70 B5254T -0.05 Kpa
1999 S70 B5254T +0.2 Kpa

2002 S60 B5244S 0.00 Kpa
2001 S60 B5244S +0.1 Kpa
2002 S60 B5244S -0.65 Kpa
2000 S70 B5244S -0.6 Kpa crawl
2002 S60 B5244S -0.55 Kpa

2005 S60 B5244S6 -0.35 Kpa hooting

2000 S80 B6294S -0.05 Kpa
2000 S80 B6294S -0.05 Kpa

2002 S60 B5244T3 -0.2 Kpa
2003 V70 B5244T3 -0.35 Kpa
2002 V70 B5244T3 -0.6 Kpa dropping from 0.3 for every piston stroke
2000 V70 B5244T3 0.0 Kpa
2002 S60 B5244T3 -0.6 Kpa crawl
2001 S60 B5244T3 0 Kpa oscillating

2005 XC90 B5254T2 -0.5 Kpa
2004 XC90 B5254T2 +0.1 Kpa
2006 XC90 B5254T2 -0.5 Kpa
2004 V70 B5254T2 -0.65 Kpa
2004 S60 B5254T2 -0.7 Kpa
2004 XC90 B5254T2 -0.7 Kpa pegged
2005 S60 B5254T2 0.0 Kpa


2000 S40 B4204T2 +0.15 Kpa sludge engine and PCV noise

2004 S40 B5254T3 -0.7 Kpa pegged
2008 V50 B5244S7 -0.7 Kpa pegged
2007 C70 B5254T3 -0.7 Kpa pegged
2008 S40 B5244S7 -0.7 Kpa Pegged
2005 V50 B5254T3 -0.7 Kpa Pegged
2005 S40 B5244S7 -0.7 Kpa pegged

2004 S80 B6294S2 +0.15 Kpa
2004 S80 B6294S2 +0.05 Kpa

2004 S60R B5254T4 -0.7 Kpa pegged



SAAB
1988 900 B202L +0.2 Kpa
1990 900 B202L +0.25 Kpa
1991 900 B202L +0.15 Kpa
1987 900 B202I +0.15 Kpa

1995 900 B258I 0.0 Kpa

1995 900 B204L -0.15 Kpa
1998 900 B204L -0.15 Kpa
1999 9-3 B204L +0.05 Kpa Oscillating
1996 900 B204L -0.3 Kpa

1991 9000 B234L +0.2 Kpa
1993 9000 B234L -0.55 Kpa
1995 900 B234I +0.25 Kpa
1997 9000 B234L -0.2 Kpa crawl


2001 9-3 B205R -0.7 Kpa W/O #6
2001 9-3 B205R -0.7 Kpa W/O #6
2001 9-3 B205R +0.2 Kpa W/O #6
2000 9-3 B205R -0.45 Kpa W #4
2001 9-3 B205R -0.1 Kpa W/O #6
2001 9-3 B205R -0.7 Kpa crawl W/O #6
2002 9-3 B205R -0.65 Kpa osc W/O #6

2000 9-3 B235R -0.65 Kpa crawl W/O #6


1999 9-5 B235E -0.7 Kpa W #6
2002 9-5 B235E -0.7 Kpa W #6
2002 9-5 B235E -0.25 Kpa W/O #6
2002 9-5 B235E -0.65 Kpa W #6
2002 9-5 B235E -0.5 Kpa W/O #6 -0.7 Kpa W#6
2002 9-5 B235E -0.7 Kpa W #6
2000 9-5 B235E -0.7 Kpa W #6
2001 9-5 B235E -0.7 Kpa crawl W/O #6 -0.7 Kpa W #6


2003 9-5 B235R -0.7 Kpa W #6
2002 9-5 B235R -0.45 Kpa W/O #6 -0.7 Kpa W #6

1999 9-5 B308E -0.25 Kpa
1999 9-5 B308E +0.2 Kpa
2003 9-5 B308E -0.7 Kpa
2001 9-5 B308E 0.0 Kpa

2004 9-5 B235E -0.7 Kpa
2004 9-5 B235L -0.7 Kpa
2004 9-5 B235R -0.7 Kpa crawl
2005 9-5 B235L -0.7 Kpa crawl
2005 9-5 B235L -0.7 Kpa

2005 9-3 B207L -0.35 Kpa
2007 9-3 B207R -0.7 Kpa crawl
2005 9-3 B207L -0.65 Kpa
2006 9-3 B284L -0.7 Kpa pegged

SWEDECAR

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