The exhaust flex pipe can fail causing excessive exhaust noise from the front/center area of the vehicle. The flex pipe is a flexible joint in the exhaust that allows for engine movement.
Resources for the Repair and Maintenance of your 2004 Saab 9-5
2004 Saab 9-5
2004 Saab 9-5 Problems
The direct ignition cassette can fail causing the engine to die while driving, and/or it will crank but not start. The engine may also have a rough idle and run roughly. Diagnosis may discover trouble codes for random misfires.
If the HID head lights are flickering or have failed, it may be caused by the window washer fluid leaking onto the HID modules. The washer fluid check valve for the head light washers develops the leak and drips onto the modules mounted under the head light assemblies.
The idler pulley for the serpentine belt can fail causing noise from the belt area. Our technicians report the pulley has been known to fail completely which can cause the belt to break or be thrown off.
If the engine will crank but not start, it may be the fuel pump has failed. Diagnosis may find no fuel pressure when attempting to start the engine.
2004 Saab 9-5 Recalls (Recent)
Summary: SAAB IS RECALLING 57,389 MY 2002-2008 9-5 SERIES VEHICLES FOR FAILING TO COMPLY WITH THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 201, "OCCUPANT PROTECTION IN INTERIOR IMPACT." DURING COMPLIANCE TESTING, ONE OF THE UPPER INTERIOR OCCUPANT PROTECTION TEST POINTS EXCEEDED THE STANDARD'S REQUIREMENTS.Learn more »
2004 Saab 9-5 Questions and Answers
My engine light goes on and off, the theft system warning comes and goes,just replaced the intermediate pipe w/aftermarket, here lately the car does'nt start on the first turn- the lock cylind...
The car has a slow idle all the time. It's harder to get going when it is cold.
Car idles rough (car shakes) when at stop and still in gear. Can this be fixed?
Also wondering how easy it is replace and if there is any good online information on how to do it. Shop wants $500, which is crazy in my book.
the smell is intermittent and sometimes after non-use overnight;
no codes on it and nothing showed up on system pressure test;
sometimes no smell for weeks then starts again; gas cap ok; worse in...