Sunday, August 27, 2017 - 11:36 am, by: Mike Beck(Gold_40gt)
If the air flow meter is disconnected, the ecu runs a default fuel map and fixed intake temp reading and only alters the mixture based on throttle, or TPS position.
Usually in this state the engine runs leaner and timing is advanced so it makes more power oddly enough.
Air flow meter is there to make it run more smoothly, efficiently, emissions and fuel economy wise.
You can't clean these old types as they run a thin film metal mirror that is impossible to clean properly given the design, they just get dirtier if you try in most cases.
The only types you can clean are MAF hot wire types from new generation 1uz 1995+
Error code 24 just means theres no temp sensor. Pull EFI 30a fuse (green) to clear the codes.
In your case, you'd need to find a good condition AFM, not run it at all, or get a AFM delete kit, that adds a MAP sensor and aftermarket piggy back ecu, they aren't cheap, but you can gain performance using them.
