Hello all,
I recently became the excited new owner of a sleek 2008 Saab 9-5 in Titan Grey, an amazing upgrade from the 2004 9-5 Linear I was sporting before. Unfortunately, taking ownership of this car has caused me to join the "9-5 slow acceleration/low boost" club. Here's the issue:
The A/C compressor bearing was beginning to fail when I bought the car. Originally, I believed that this was placing extra load on the engine and causing slow acceleration as it felt like the engine was fighting this load before delivering power to the wheels (especially when going up hills). Although performance and acceleration did improve after replacing the compressor, it still feels nothing like the 2006 9-5 Aero owned by a family member. Replacing all vacuum lines with silicon, as well as cleaning the MAF/BPC thoroughly has made no improvements. Adding the “bolt mod” has helped with responsiveness and acceleration right off the line, but once up to speed, the Saab feels more like a Camry. Although the turbo gauge does go into the lower red region during “spirited drives,” there is a definite lack of boost and no saab “punch.” I always run the car on 93 octane and within the past year many parts have been replaced such as the: Mann air filter, throttle body, spark plugs, DIC, BPV, thermostat and crankshaft position sensor.
Any help with this problem would be greatly appreciated! I have a generic OBD scanner if any parameters are needed.
Cheers.
I recently became the excited new owner of a sleek 2008 Saab 9-5 in Titan Grey, an amazing upgrade from the 2004 9-5 Linear I was sporting before. Unfortunately, taking ownership of this car has caused me to join the "9-5 slow acceleration/low boost" club. Here's the issue:
The A/C compressor bearing was beginning to fail when I bought the car. Originally, I believed that this was placing extra load on the engine and causing slow acceleration as it felt like the engine was fighting this load before delivering power to the wheels (especially when going up hills). Although performance and acceleration did improve after replacing the compressor, it still feels nothing like the 2006 9-5 Aero owned by a family member. Replacing all vacuum lines with silicon, as well as cleaning the MAF/BPC thoroughly has made no improvements. Adding the “bolt mod” has helped with responsiveness and acceleration right off the line, but once up to speed, the Saab feels more like a Camry. Although the turbo gauge does go into the lower red region during “spirited drives,” there is a definite lack of boost and no saab “punch.” I always run the car on 93 octane and within the past year many parts have been replaced such as the: Mann air filter, throttle body, spark plugs, DIC, BPV, thermostat and crankshaft position sensor.
Any help with this problem would be greatly appreciated! I have a generic OBD scanner if any parameters are needed.
Cheers.
