Saab 9-5 aero 2001 Problem: Engine malfunction light on all the time When I start the car I can feel a slight knock sound and when I drive I can hear a ricketting noise, especially when in 2nd gear. It drives ok otherwise. Any help would be greatly appreciated Jay
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still could have a fault in crank sensor wiring ,,, you need to plug in diagnostic tool when it wont start and see if you have a engine revs reading ,,, also check if fuel is getting to the engine ,,,, that car also has immobiliser so try spare key to see if problem goes away ,,,,,, wont get codes on that age group unless problem happens when driveing
a flashing check light usually means a problem needs to be attended to right away most auto store such as advanced auto/auto zone etc offer free scanning to trouble code will give u a start location so u can make repairs if necessary
Malfunction most likely at the computer or PCM for your vehicle. Try this. Take off both battery cables, wait 15 minutes, rehook, then see if light goes off. Software for Saab? Never heard of needing software for the airbags.........
Standard Answer for Timing Belts/Chains: 100,000 to 120,000 miles is when the Timing Belts/Chains start malfunctioning or failing. Some people want to go ahead and change them before malfunctions/failures happen. I just replaced mine on 2002 Dodge Grand Caravan which just turned 100K. Most Timing Belt/Chain failures will cause more costly engine damage when these fail, including a need to replace/rebuild an entire engine.
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It sounds like you need to check and replace your engine oil and oil filter. This will happen when it is cold and dirty and it takes time to get to the oil ports in the engine. I hope this helps. Don't forget to rate my answer. Thanks.
Sounds like car is in limp home mode which needs reseting ,which may indicate you need a new Di Rail, or throttle body. Is engine management light on all the time if so Needs reseting. Hope this helps.