My 2001 Saturn L300 V6 3.0 Stalls while driving, then after a few minutes starts back up

scan for codes and check fuel pressure first. clean throttle plate on both sides with choke cleaner.

I tried hooking up a scantool and I cant communicate with the Computer.

check to seeif any fuses are blown under hood, then you will have to check aldl for poor connections.

BCM blown fuse

That will cause a communication problem did the fuse blow again after replacing it?

no it did not, i have codes p1780, p0030, p0156

check bank one(lh) frontO2 sensor and circuit and bank tw0(rh) rear O2sensor and circuit. they may be bad heaters may not be working.

those codes for the 02 sensors have been o there for a while like for a year.will bad 02s cause this symptom. like right now its at idle then suddenly dies. if i wait for 10 minutes sometimes less, it starts back up

I worked on tons of those cars and never had a bad o2 sensor cause those symptoms sounds like a bad crank shaft position sensor i have replaced tons of those for those symptoms.They dont always set codes when they go bad.Do you have a multimeter to do some testing?

Yes Sir I do. Is the crank shaft position sensor next to the oil filter ?

Yes it is the connector feeds back up into the engine compartment.Does your scan tool read live engine data?If it does when can see if its getting a rpm signal when.it die and wont start.

I tested the sensor for resistancce two times and got 156 K Omhs the Second time I got OL. I hope I tested right.

You test it when it wont start and it should read 800-1200 ohms.

Yes sir. It looks like I have a valve cover gasket leak so the crank sensor its oil soaked.

So does the crank sensor test out of spec?

I replaced the Crank Shaft Position Sensor today, now the car runs fine. THANKS FOR ALL YOUR HELP I APRECCIATE YOU.

Your welcome thats what here for anytime glad to hear its fixed it sounded like a bad crankshaft position sensor.