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Classic Saab 9-5 (MY 1998-2010) / fall in turbopressure and rpm for a sec ...engine breake....
« on: 21 March 2012, 01:21:11 PM »
I have a Saab 9-5 Aero SC 2008, Aut, MapTune step 2,
Have a confusing problem with the car so far nobody has been able to solve. Just want to hear if there is anyone who may have an idea what to do or what it can be.
When I drive and take the foot of the accelerator pedal falls turbo boost pressure, and the rpm of the engine. It feels as if it will stop and the engine braking, but as fast as it comes, just as quickly disappear. It acts like something off the ignition, and in a second.
"The engine holding it's breath for a sec...almust"
Does anyone have an idea? or better yet know what it is. It does not generate any error codes, there is no leakage what we can see / hear.
It does not happen regularly, but more if I go slowly and take the foot off.
Would be nice to get an explanation when it is hard work to go at full throttle all the time lol
And BTW sorry for my broken English as well.
Have a confusing problem with the car so far nobody has been able to solve. Just want to hear if there is anyone who may have an idea what to do or what it can be.
When I drive and take the foot of the accelerator pedal falls turbo boost pressure, and the rpm of the engine. It feels as if it will stop and the engine braking, but as fast as it comes, just as quickly disappear. It acts like something off the ignition, and in a second.
"The engine holding it's breath for a sec...almust"
Does anyone have an idea? or better yet know what it is. It does not generate any error codes, there is no leakage what we can see / hear.
It does not happen regularly, but more if I go slowly and take the foot off.
Would be nice to get an explanation when it is hard work to go at full throttle all the time lol
And BTW sorry for my broken English as well.