I was spraying carb & choke cleaner into throttle body, and it backfired, and it wouldn't idle or drive after the backfire!

Cannot be ANY leaks in that big rubber air tube! Otherwise engine will not idle.

I've done it twice with no problems, but trying to spray, and keep the idle from dropping to stall was the issue. Idle dropped too low, then stalled and backfired! Never the same after that. Now having to tap pedal to keep running, and won't move before stalling!

You lifted the air cleaner cover up to spray carb cleaner into throttle body - in the process if you have damaged that RUBBER tube then the engine will not idle. Otherwise you’ll need *hands-on* assistance from qualified personnel for proper diagnosis. Good luck!