I have a Saab 9-5 2.3 Auto the engine failed at 97000 miles oil filter blockage. Engine rebuilt and I have done a further 50,000 miles trouble free driving, recently the car has been failing to start when the engine is warm, it does not happen each time but it is becoming more frequent. When it fails to start if I leave it for 10 minutes it starts fine. I have replaced battery but have failed to find a cause. If there is any one who has experienced this problem and solved it I would be delighted to hear from you.