91 LS400 won't stay running - Hella Fresh

I have a Lexus 91 that died on me the other day and we had to jump it to get it running agian. So now that we charged the battery and the car cranks fine and fires up but wont stay running. Now we checked the oil -OK, coolant -OK, Fuel coming to the cylinders -OK, Spark to the plugs -OK. So it have everything now what? I also notice the starter hangs up even tho i turn off the ignition but i dont thing that has anything to do with the car not staying on. I even unplugged the MAF to see if it will fire but no luck. So any ideas on why it wont stay running without pressing on the gas?