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Old 10-23-2014, 01:03 AM   #1
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9-5 Loss of boost after weird event...

I recently picked up a 9-5 aero wagon MT about a week ago.. Car has been great.. Plenty of power etc.. One thing i did notice is the CPS is going out.. Car wont start when warm and sometimes it would feel as if the engine shut of and then turned back on under acceleration.. CPS problem aside ( waiting for ordered sensor to arrive) i had this weird thing happen to me while driving to home today. So i was cruising home at about 50-55 mph and all of a sudden the car started to decelerate.. Tried to apply throttle and nothing.. Downshifted and still nothing.. I pulled over to the side of the road and it died at about 10mph? I thought maybe it was cps related to i turned the key and it started right up, idled fine ETC... When i started to accelerate back on the highway i realized there was little to no boost.. It wont go into the orange at all.. The car has an intake so i can hear the turbo spooling up and that bov sound by the DV but barely any power like it used to have...

I guess what i'm getting at is could this be CPS related?

I've done a bunch of research and read that it could be the bypass valve or boost leaks but isn't the bypass valve working fine if im getting some boost and hearing the bov sound?
Oh and there's no CEL which is the really strange thing..
and CEL is functional.

Any info will help as im not experienced with saabs at all.
Thanks
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Old 10-23-2014, 07:26 AM   #2
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That still sounds like CPS failure. My aero did the same thing to me a while ago, but did not restart until 10 mins later.
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Old 10-23-2014, 03:59 PM   #3
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Thanks that's what i was hoping to hear... The CPS is definitely getting worst.. today a very short drive cause the no start till cold.. Again car has little to no boost still. Hoping the CPS will come Soon.. One thing to note i looked around and found that the pipe from the bosch BPV? to intake can be removed very easily with a small tug.. Dont know if that is normal or not.. There looks to be a ruber oring inside thats intact.
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Old 10-23-2014, 09:35 PM   #4
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Originally Posted by Saabeh View Post
That still sounds like CPS failure. My aero did the same thing to me a while ago, but did not restart until 10 mins later.
Just double checking... Your car had the low boost/power from cps as well?
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Old 12-05-2016, 11:31 AM   #5
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I know it's old thread but, how did it end? I have the same problem. Only i have CEL.
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