We're having a hard time starting my Saab 9-3, so we recently compression started it in gear. A couple of times the engine would start for about 5 seconds then die again, when we turn the key we c

SOURCE: Could it be the Fuel Pump?

It could be the anti-drain back valve (check valve) is stuck or it could be the Walbro fuel pump which is known to be good up to the 80,000 to 120,000 mile range. The banging on the tank trick working usually means fuel pump.
The typical symptom of a fuel pump check valve failure is extended cranking time during startup. What generally occurs here is that the check valve in the fuel line sticks open causing lack of fuel pressure. This usually occurs after the car has been sitting for a while or overnight. The fuel pressure leaks down causing the fuel pump to have to work very hard to push the fuel from the tank to the fuel rail. The symptom is similar to vapor lock but not quite. The solution to this is to replace the fuel pump check valve which can be difficult in itself. Be very cautious when attempting this repair because of the dealing with the fuel system and this always presents a potential FIRE HAZARD!!!!!!!
NOTE: When doing this job, be careful. If you break the link with no check valve in the fitting you will have to replace the entire fuel line because Saab does not offer the fitting by itself. Being a "Bull in a china shop" would not be a good idea here. If you break the valve you can replace the valve by itself only if you purchase the complete line and remove the valve from the new line and install it in the old line. They valves become brittle over time and can easily break when removing the fuel pump.
Fuel pump failures often cause the engine to buck when going up hills or just quit completely. You can test the fuel pressure using a fuel pressure gauge. The pressure should about 40 PSI (approximately). The location of the pump depends on which car you have. On the later model 900, 93, 95, and 97X the fuel pump is located in the fuel tank and the tank must be removed to replace it.

SOURCE: Saab 9-5 Aero Wagon 2000 wont restart when warm or after running

I have a 1999 Saab 9-5. I had a similiar problem. The car would always run cold. It would get hot and the engine would quit. It could be anywhere. One mile from start to 50 miles from start. Once it cooled down it would re-start but the cool down time was always different. Only difference for me was my car would crank, just not run. Replaced the crank position sensor ($60), no more problems! Good luck!

SOURCE: my saab 9-5 wagon wont start

water temp switch faulty.

SOURCE: saab 9-5 3.0 tid 2004,turning over but not

have you tried bleeding the injectors by just cracking the unions until you see fuel leaking then tighten them as i stupidly run out of fuel and my 3.0tid wouldnt start even when recovery company tried and that is what it turned out to be an air lock

dj_relly999

• 4070 Answers
• Posted on Jan 19, 2011

SOURCE: 2002 Saab 93 Convt. 2.0

Hi and welcome to FixYa!

If you want to know if there's fuel supply turn the key on ON position and loosen the hose to the fuel rail where the fuel injectors are connected. If the fuel spills then you have a good fuel supply and there's no need to replace the fuel pump.

Try to disconnect the positive battery connector and let it sit for atleast 5mins. then reconnect it again. This will reset the car's computer and can get it back to it's normal operation. If the car starts please have the car diagnosed by a scan tool to know the fault code and by then you will know what part needs to be replaced.

Hope this helps and thank you for using FixYa! Have a good one!