1991 Pontiac Grand Am Broke Down

More recently, it had become worse. My service light had come on more freqeuntly--every time I stepped on the gas and the engine temp was less than 160°F. It backfired once or twice. Finally, a couple of days before it quit altogether, I noticed it missed a few times, and once even tried to stall while driving. The service light was on and the engine temp was around 110°F.

I get a code 23 -- faulty intake air temp sensor. Yesterday, I tried to start my car, but it wouldn't. I have thought of a few possibilities, but I wanted to see what the general consensus thinks. Any help is appreciated.

Yesterday, I ran the code scanner, and I also had a code 32--EGR Circuit. Could this cause the no-start?

I've been trying to find a leak on the vacuum lines, but so far, nothing yet.

EGR---->>> horrible idle, maybe difficult starting if open and leaking, but not a no start condition. Sounds like crank sensor or one of the basics. I did not see original post.

Your MAF blew itself up. A "backfire" sound from under the hood is basically the thing venting exhaust through the intake, which roasts the MAF after 1-2 times, guaranteed.

Why it blew itself up is probably the ignition controller, the coil packs, or the timing gear ate itself(thankfully it's a non-interference design, IIRC).