It started about 2 weeks ago. After the car warms up it will randomly cut out at around 25-40 while accelarating. While cruising at a normal speed it will not cut out or make any weird noises. I have not driven it since it started doing all this madness. Could it be the different gas station I started using? Any idea on what this might be? Also its a 97 auto z28.

 

Could you be a bit more specific as to what "cutting out" means, I 'm assuming the car starts to miss. If it's only after it warms up more than likely you have a sensor that is bad so the car only takes the bad input after it goes into closed loop. Is the SES light lit?

 

When it cuts out it pretty much dies then comes back to life then dies again. Also after it warms up it sounds like there is a huge vacumn leak. It hises really loud. I got it scanned but this was before the cutting out started to happen. Vehicle speed output circuit fault, fuel pump monitor circuit low input, fuel pump monitor circuit high input.

 

I've looked for the vacumn leak but no luck on that. Ill probably drop the the gas tank tomorrow to look for some faulty wiring.