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Fuel Octane?
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Posted by JustinHiFi [Email] (#829) [Profile/Gallery] (more from JustinHiFi) on Fri, 22 Jun 2012 10:10:36 Share Post by Email
In Reply to: power loss when hot - need expert help please, POB, Thu, 21 Jun 2012 16:47:58
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Last year had a client who brought me a similar problem when he moved from VT. Severe lack of power with the AC on and high ambient temps. The dealer had replaced CPS, IDM, TB, AMM, MAP sensor without any improvement.

After a quick scan with the Tech 2, I noticed the knock and misfire counters were through the roof. Reset and hit the road. Turns out he had been running 87 octane as "Saab says its okay in the owners manual". A simple refill with 93 octane, resetting adaption values took care of it (long term as I still service the vehicle).

JustinHiFi

posted by 97.103.11... 
_______________________________________
JustinHiFi
Strictly Saab Inc.
Melbourne, FL

Current:
-1991 900 S-PG MT
-2001 9-5 Wagon AT
-2006 9-3 SS AT

Past:
-1964 96 2-Smoke MT
-1967 96 v4 MT
-1983 900 Turbo MT
-1985 900 SPG MT
-1988 9000 Turbo Black MT
-1988 9000 Turbo White AT
-1990 900 SPG Red MT
-1990 900 SPG Black MT 
-1991 9000 Turbo MT
-1991 900 SPG Red MT
-1992 9000 Griffin AT 
-2000 9-5 Aero Sedan MT
-2001 9-5 Aero Wagon MT
-2008 9-3 2.0T Sedan AT
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