Hai gebissen

You mean the electrically operated solenoid (purge valve), right? The one Rob had to replace when he went through this?

GregBBRD

Yes.

Take the hose off of that valve. You should have suction through that valve for only a few seconds after start-up (to purge the charcoal canister). If it continues to suck, after running...it will suck that tank inside out.....regardless of what is happening with the vent line.

As these cars get more and more miles on them, this is getting to be a fairly common problem. Destroys a lot of gas tanks....

Testing is easy....the real excitement is finding one.

Mrmerlin

sorry for not being more specific yes replace the purge valve,
i dont know how much a new one costs WAG maybe 700.00 dollars

Rob Edwards

Lil' bit cheaper than $700, but still pricey:

New:

http://www.mailordercentral.com/928i...605%20240%2001


Used:
http://www.mailordercentral.com/928i...605%20240%2001

Hai gebissen

Thanks Greg, Stan and Rob. I see that valve has a 944 part number. It also looks an awful lot like the evap purge valves on my Saabs, of which I have dozens. I wonder if there is a Bosch number that matches up to other applications...

Hai gebissen

By the way, when these valves go bad on later OBDII cars, they often set a P0444 fault code. They can also can cause stubborn P0455 "serious evap leak" codes. I haven't seen a Saab plastic fuel tank get sucked in though.

Hai gebissen

Evap purge valve as removed from a 1992 Saab 900 turbo

Bosch p/n on housing 0 280 142 157

Anybody have a Porsche valve handy to look at? Mine is at home...

Rob Edwards

On the '91 S4 motor I have here, it's 0 280 142 151:

gearz

I went out to the garage and checked mine; 028 0142 151
That Saab part definitely looks exactly the same- smaller diameter on upstream (canister) side and larger downstream to the manifold. Whether it works or not I have no clue. You could test it like Greg B suggested in his post.

gearz

Too slow to respond; Rob beat me to it.

Hai gebissen

It looks like the difference might amount to the way it mounts...our Saab valves are held in place by a rubber ring on top of the charcoal canister. I bet it would work just fine in a 928.

Hai gebissen

If I hold the Saab valve up to the screen oriented the same way as the valve Rob pictured above, with the Bosch number and "Made in Germany" facing me, the two pin connector is 90 degrees different. Other than that it appears identical.

dprantl

The Porsche one is Bosch #0 280 142 151 and is used on the following:

PORSCHE 911 (964) (1988/12 - 1993/09)
PORSCHE 911 Convertible (964) (1989/05 - 1994/06)
PORSCHE 928 (1977/09 - 1995/11)
PORSCHE 944 (1981/06 - 1991/07)
PORSCHE 944 Convertible (1988/12 - 1991/07)
PORSCHE 968 (1991/06 - 1995/11)
PORSCHE 968 Convertible (1991/06 - 1995/11)

The SAAB one (0 280 142 157) looks very similar and will probably work. Just for kicks, this one works in all the vehicles below and is also NLA since Jan '09. I wonder how that is possible since a 2005 Citroen Xsara Break was only 4 years old at the time...

CITROEN
CITROEN BX Break (XB-_) 1983-1994
CITROEN BX (XB-_) 1982-1994
CITROEN EVASION (22, U6) 1994-2002
CITROEN JUMPER Box (230L) 1994-2002
CITROEN JUMPER Bus (230P) 1994-2002
CITROEN JUMPY Box (BS_, BT_, BY_, BZ_) 1994
CITROEN JUMPY Flatbed / Chassis (BU_, BV_, BW_, BX_) 1999
CITROEN JUMPY (U6U) 1994
CITROEN XANTIA Break (X1) 1995-1998
CITROEN XANTIA (X1) 1993-1998
CITROEN XANTIA (X2) 1998-2003
CITROEN XM Break (Y3) 1989-1994
CITROEN XM Break (Y4) 1994-2000
CITROEN XM (Y3) 1989-1994
CITROEN XM (Y4) 1994-2000
CITROEN XSARA Break (N2) 1997-2005
CITROEN XSARA (N1) 1997-2005
CITROEN ZX Break (N2) 1993-1998
CITROEN ZX (N2) 1991-1997
FIAT
FIAT DUCATO Box (230L) 1994-2002
FIAT DUCATO Bus (230) 1994-2002
FIAT DUCATO Flatbed / Chassis (230) 1994-2002
FIAT SCUDO Box (220L) 1996
FIAT SCUDO Combinato (220P) 1996
FIAT ULYSSE (220) 1994-2002
LANCIA
LANCIA ZETA (220) 1995-2002
PEUGEOT
PEUGEOT 106 I (1A, 1C) 1991-1996
PEUGEOT 106 II (1) 1996
PEUGEOT 205 I (741A/C) 1983-1987
PEUGEOT 205 I Convertible (741B, 20D) 1986-1994
PEUGEOT 205 II (20A/C) 1987-1998
PEUGEOT 306 (7B, N3, N5) 1993-2001
PEUGEOT 306 Break (7E, N3, N5) 1994-2002
PEUGEOT 306 Convertible (7D, N3, N5) 1994-2002
PEUGEOT 306 Hatchback (7A, 7C, N3, N5) 1993-2001
PEUGEOT 309 I (10C, 10A) 1985-1989
PEUGEOT 309 II (3C, 3A) 1989-1993
PEUGEOT 405 I (15B) 1987-1993
PEUGEOT 405 I Break (15E) 1987-1992
PEUGEOT 405 II (4B) 1992-1995
PEUGEOT 405 II Break (4E) 1992-1996
PEUGEOT 406 (8B) 1995-2004
PEUGEOT 406 Break (8E/F) 1996-2004
PEUGEOT 605 (6B) 1989-1999
PEUGEOT 806 (221) 1994-2002
PEUGEOT BOXER Box (230L) 1994-2002
PEUGEOT BOXER Bus (230P) 1994-2002
PEUGEOT BOXER Flatbed / Chassis (ZCT_) 1994-2002
PEUGEOT EXPERT (224) 1995
PEUGEOT EXPERT Box (222) 1995
PEUGEOT EXPERT Flatbed / Chassis (223) 1995
SAAB
SAAB 900 I (AC4, AM4) 1979-1993
SAAB 900 I Combi Coupe 1978-1994
SAAB 900 I Convertible 1986-1994
SAAB 9000 1985-1998
SAAB 9000 Hatchback 1984-1998
VOLVO
VOLVO 740 (744) 1983-1992
VOLVO 740 Kombi (745) 1984-1992
VOLVO 940 (944) 1990-1994
VOLVO 940 Kombi (945) 1990-1995

Dan
'91 928GT S/C 475hp/460lb.ft

Hai gebissen

I have access to as many Saab valves as I want

I'll try it and report back on this thread.

Hai gebissen

This morning I determined that I had suction continuously through the purge valve, not just for a few seconds on start up.

I then removed the valve and found that I could blow and suck through it freely. In other words, it was open all the time.

I then compared the Porsche valve to the Saab valve I mentioned previously...





...and determined that other than the last digit of the Bosch number on them, they are identical. (Thanks to my six year old son for holding them for pics)

I verified that the Saab valve only flowed one way and installed it. Works fine. Why the Bosch number is one digit different I have no idea.