Had that happen once - the engine made a big bang under hard power while going about 50 MPH then the car died....but it restarted and I dove it home at about 20mph which is all the thing could muster. The thin MAF wire inside was fried - K&N oil all inside the MAF. Your problem should have shown up before 2 months though...mine only took a few days. Check your MAF wire...if it's intact change the 2 MAF relays.
Well at least I now know how much filter oil is too much.
Location: 1994 LT1 Coupe 6-speed with FX3 & 2000 LS1 Vert 6-Speed with F45 Hunterdon County, NJ
It does sound like a dirty MAF (our 94 never gave a code, but it did stumble at 1100-1200 RPM and buck a bit at 1600-1700 RPM.
Once I cleaned the TB, IAC and MAF (using the CRC products specifically for each), the stumble and bucking both stopped.
After reading about concerns about the K&N Filter oil migrating into the MAF, and also a comparision of filters (which showed K&N allowed more dirt through), I also removed the K&N filter and switched to a paper filter (NAPA GOLD), especially since it is only a street car.
BTW, I also found some oily dirt on the engine side of the MAF. I concluded the PCV valve was original and most probably the spring inside was weak and allowing the PCV to close prematurely, causing engine blow-by to be forced backward towards the TB and the backside of the MAF (also found one of those 'airfoils' in the intake, which I removed too).
I posted additional info about this a few weeks ago, try doing a search for my id and MAF to find it...
Help me out here, did your K&N make your MAF act up?
I cleaned my filter about 2 months ago, all was ok until recently.
The car runs ok, but when I lug it around in OD within 1/4 mile it starts to die then a slight buck, throws a code 33, and stalls out
SHut it down, Check ENgine light goes out and drive home in D and it hasn't thrown a code.
Take that K&n filter and get your money back it has a life time warranty and find a wix air filter . that K&n sets to close to the MAF
I have had 2 Maf taken out, to see if it is the MAF unplug it and the computor in the car will go to set default settings and then start you r vette and I bet it runs better. That K&N filter left me standed in Taos , New Mexico.
My 94 is throwing code H48-MAF. I cleaned the TB, IAC and sprayed the MAF insides with MAF cleaner and it runs better with it disconnected. I can at least drive it that way, but plugged in the engine runs awful.