1st of all I'd like to start out That I was driving it and I went to accelerate around somebody and I lost power I lost all the Lost the belt Drove to where I had to go. Then I noticed a leaking oil. Had Towed home. Replace operationing in it. Started it and ran Fine for 5 to 7 minutesThen it started bucking and puken and dying. Replaced Crank position sensor. Still running the same. No codes . Now every 10 hours or so It starts and run fine for 5 to 7 minutes Any help here would be greatly appreciated
Forgot it's a 2003 Monte Carlo Ss 3.8 150 K. I was running. Before I had this happened

 

It's tough to say without any diagnostic info. Do you have any kind of scan tool to read live sensor data? That would be my starting point - to read what the sensors are showing while its running and then what they show the moment it dies (ie do fuel trims suddenly spike, does MAF go nuts, etc). It sounds like something is getting wacky when it gets warmed up.


Its hard to follow on the other points. Did you drive it a notable distance with no belt at all? (Ie no water pump) what caused the belt to come off - old tensioner or something?

Not sure on the oil leak either - did it just start when this happened? Is it possible its just a coincidence that you noticed it at the same time? I just can't think of any external oil leak that would cause the engine to die unless a rod was hanging out of the block.