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  1. #11
    Saab Fan
    Join Date
    20 Oct 2013
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    CA, USA
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    15
    Saab(s)
    2003 Saab 95 arc 3.0
    Thumbs Up:   0
    Good Evening Fellows. I replace my By-pass valve in 2 months. 2003 Saab 95 Arc V6. Hot air blows in the cabin good. It again leaked today. Hoses are correctly connected as shown in these pictures. Please help. ...... Very Nicely explained. I thank you all. Nice to help each other.

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  2. #12
    Bruno
    Saab Addict swisssaabist's Avatar
    Join Date
    18 Nov 2016
    Location
    Cheeseland or TICTAC land
    Posts
    601
    Saab(s)
    9-5 ARC Wagon 2002 2 t auto engine B205E
    Thumbs Up:   56
    do you have thought to swap the entire valve for simple tubes ? like that no leaking again

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  3. #13
    Saab Fan
    Join Date
    20 Oct 2013
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    CA, USA
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    Saab(s)
    2003 Saab 95 arc 3.0
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    Thanks for reply. No, I did not change the entire assembly, too much money. I replaced only Coolant bypass valve 2-times within 2 months. Both leaked at top vent. All the hoses are good. no cracks at all. the solenoid is bench tested with 12 volts. it functions correctly. Not sure what should be the voltage at the solenoid terminals. It reads 0.80 volts between the 2 terminals. Ground to each terminal is 12.8 Volts. the vacuum is good at the pipe.

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  4. #14
    Saab Fan
    Join Date
    20 Oct 2013
    Location
    CA, USA
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    Saab(s)
    2003 Saab 95 arc 3.0
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    2003 Saab 95 Arc V6 Turbo, Heater Valve replaced twice, leaked twice

    HELLO Saab Friend, 2003 Saab 9-5 Arc
    I replaced this Heater bypass valve 2 times in 2 months ( bought for $12.79 each on Ebay https://www.ebay.com/itm/7610-207-FI...72.m2749.l2649).
    Dismantled it had pink diaphragm. The Original had black.

    Both failed/leaked at the small hole vent above the diaphragm. What causes the failure.??? Any suggestion.?? The vacuum solenoid bench tested with 12 Volts, it works.
    Please help. Thanks and regards.

    Quote Originally Posted by J-Rod View Post
    Thought I'd throw up a DIY on a common problem with the '99-'09 Saab 9-5.This is a collection of ideas I was given by members on another forum and my personal experienced.

    Symptoms of a coolant/heater bypass valve going bad:
    -Coolant leakage under the firewall
    -Smell of burning coolant
    -In some cases (like mine) a catastrophic leak that dumps the whole coolant tank

    Very straightforward replacement that I completed on my '03 Arc in about 55 minutes. Total cost was about $40 for the valve from eEuroparts.com

    Tools needed:
    -Narrow tipped pliers
    -A socket set with wrench
    -Bungee cord
    -bucket (to avoid coolant spillage all over your garage)
    -Cutters of some sort

    Procedure:

    1. Place the bucket under the car under the valve.
    2.Mark the top tube with a pen/marker so you know where it goes afterward

    Attachment 4112

    3. Undo the wire harness box

    Attachment 4114

    and use the bungee cord to pull it toward the front of the car so it's out of your way.
    4. Clip the zip tie from the top hose and remove all of the silver hose clamps and undo the hose from the top of the valve

    Attachment 4113

    5. At this point the valve should slide upward out of a bracket that is attached to, I believe, the hoses behind the valve.
    6. Slide the new valve into the bracket and reconnect everything. Be sure to put a new zip tie where the original one was or else the valve will flop around the may come out of the bracket.

    I hope I didn't leave anything out, I did this repair awhile back. If I did, chime in!

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  5. #15
    Saab Fan
    Join Date
    03 Dec 2017
    Location
    Hungary
    Posts
    5
    Saab(s)
    9-5 2.3
    Thumbs Up:   0
    Sorry for inproper English, my 9-5 floods pessenger space with hot air if ACC is off. So hot, it cause Electronic missfunctions on radio- goes off for second.., and turn signal indicator. Please help me out here..!

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  6. #16
    Bruno
    Saab Addict swisssaabist's Avatar
    Join Date
    18 Nov 2016
    Location
    Cheeseland or TICTAC land
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    Saab(s)
    9-5 ARC Wagon 2002 2 t auto engine B205E
    Thumbs Up:   56
    Quote Originally Posted by hubervili View Post
    Sorry for inproper English, my 9-5 floods pessenger space with hot air if ACC is off. So hot, it cause Electronic missfunctions on radio- goes off for second.., and turn signal indicator. Please help me out here..!
    Hello, seems you have malfunction in blending doors so you can resolve your issue by yourself, first you need to do the diagnosis of your ACC




    SaabWorld said:
    2013-04-01
    ACC calibration and fault codes - Saab 9-5
    Model year 1998-2005

    Calibration is done by starting the engine and simultaneously pressing the AUTO and OFF buttons. Calibration takes about 30 seconds. Calibration must be performed if the battery has been disconnected/discharged, if the ACC unit or a stepping motor have been replaced or its position changed.

    Calibration is also automatic directly following engine start in the following cases:

    new ACC fitted
    +30 supply was cut earlier than 10 minutes after the ignition was last turned off (usually in connection with battery replacement).

    While calibrating, the number of stored diagnostic trouble codes is displayed instead of the left-hand temperature. Diagnostic trouble codes 0-23 are displayed for 3 seconds each instead of the right-hand temperature.

    Name: saab-9-5-acc-calibration.gif
    Views: 34990
    Size: 4.3 KB

    This is a list compiled from WIS documentation

    Code Problem OBD
    1 Internal control module malfunction B1605
    2 Cabin temperature sensor - open or short circuit B1350
    3 Solar sensor B1340
    4 Mixed-air temperature sensor, LH - open or short circuit B1345
    5 Mixed-air temperature sensor, RH - open or short circuit B2345
    6 Stepping motor, air-mixing flap, LH - open or short circuit B2490
    7 Stepping motor, air-mixing flap, LH - motor jam B2496
    8 Stepping motor, air-mixing flap, LH - no mechanical contact with flap B2495
    9 Stepping motor, air-mixing flap, RH - open or short circuit B2290
    10 Stepping motor, air-mixing flap, RH - motor jam B2296
    11 Stepping motor, air-mixing flap, RH - no mechanical contact with flap B2295
    12 Stepping motor, air distribution flap - open or short circuit B2400
    13 Stepping motor, air distribution flap - motor jam B2406
    14 Stepping motor, air distribution flap - no mechanical connection between motor and flap B2405
    18 Solenoid valve, heat exchanger shut-off valve - open or short circuit B2375
    19 Circulation pump - open or short circuit B2380
    20 Ventilation fan B2425
    21 DC motor, air recirculation flap - open or short circuit B2410
    22 ACC software
    23 Sensor Ground
    Let Us know about...

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  7. #17

    Join Date
    08 Sep 2019
    Location
    Florida
    Posts
    2
    Saab(s)
    2003 9-5 aero
    Thumbs Up:   0
    Hi
    im new to this forum and i thank you in advance for any help
    i have a 2003 9-5 aero with a code 18 in the acc unit
    i have replaced both the valve and the solenoid (used) and checked fuse 31 and its fine
    yet when i run the acc diagnostics code 18 is still there
    any suggestions ??
    thanks

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