This has been a problem for a while now with my saab 9-5 2ltr 1998.
The car starts and runs fine with no problems. However when I approach a steep hill the speed drops from 80 to about 55mph and doesnt pick up again until its back on the flat road. Also it hardly goes over 80mph on the flat. These cars are capable of over 110mph if im correct. Overtaking can be a dare sometimes.
Ive renewed all vacuum hoses, cat converter, oxygen sensor, regular oil change, fuel filter. Fuel pump etc. The problem still persists.
My only other thought is the fuel injectors may need ultrasonic cleaning.
if anyone can shed any light on the problem it would be very appreciated.
Wednesday, September 21st, 2011 AT 5:05 AM