manual Saab 9 5 FL I 1 owners manual page 144

text version of content this owner's manual page from owners manual to the vehicle Saab 9-5, year of production 2005 - 2009:

95_US_MY09.book Page 144 Tuesday, April 15, 2008 11:03 AM 144 Starting and driving Important • One of the advantages of boost pres- sure regulation is that the engine can WARNING considerations for also be run safely on gasoline with a driving lower octane rating, although not lower If the engine is being run with the car on a than AON 87. However, engine perfor- rolling road or dynamometer, longer than The engine-manageme nt system in the mance will fall slightly and heavy load- for a standard state emission inspection, Saab 9-5 is called Saab Trionic T7. The ing and laboring should be avoided. For to ensure adequate cooling, air must be system manages th e ignition, fuel injection optimum performance, use the recom- blown into the engine compartment and and turbo boost pressure. mended grade of fuel. under the car at a rate equivalent to the The Trionic T7 system developed by Saab • The maximum boost pressure is ram-air effect that would be obtained at is an intelligent engine-management adjusted automatically to the knocking the corresponding road speed. system designed to ac hieve optimum driv- or pinging tendency of the engine. ability under differing driving conditions. Occasional, short-lived knocking when The system makes adjustments automati- the engine is under a heavy load is cally, for instance, if the car is being driven perfectly normal; the extent will depend at altitude (oxygen-deficient air), for differ- on the grade of fuel in the tank. ent grades of fuel (AON 87–93) and for dif- • Isolated instances of knocking are ferent load conditions. more likely to occur with low-octane 1 Starting and driving fuel. This controlled form of knocking, followed by a reduction in the boost • Refrain from using full throttle before pressure, is a sign that the wastegate is the engine has warmed up (before functioning and is perfectly safe for the needle in mid-range on temperature engine. gauge). • A safety function prevents the engine NOTICE from revving faster than 6,000 rpm by • If the engine sounds strange there is a limiting the induction air. fault in the system. Have the car 2 Stopping the engine checked without delay by a workshop. • Do not rev the engine immediately We recommend that you contact an before switching it off – stop the engine authorized Saab dealer. when it is idling. • The use of fuel with too low an octane 3 Regulating the boost pressure rating can cause serious engine damage.

owners manual Saab 9-5

owners manual Saab 9-5 - year of production: 2005, 2006, 2007, 2008, 2009 - Saab 9 5 FL I 1 owners manual EN