u/SanDiego_Eddie

Stay on until I hit gas. It gave me a mass air flow sensor error with scanner. But I plugged it in and it went away. It stalls when I hit gas slower

Water pump was replaced. I thought I had done everything correctly and I literally forgot to tighten manifold bolts and to connect MAF sensor. After trying to start car 3 times, it started on the fourth and it was stalling. Turned off after rough idling for about 40 seconds to a minute. I ran this cheap obd2 thing I have and it gave me 3 codes. They were there before so no biggie. But it also gave me fuel injector 3 misfire. That’s when I looked up to see what to check for after doing the work I had done.
It told me to check

manifold seated evenly
all bolts tightened evenly
PCV hose connected
brake booster hose connected
MAP sensor plugged in

I checked all those and that’s when I noticed the MAP sensor was not plugged in.second video after connecting map sensor.