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Your post history gets better with every single one.

Huh? It shows exactly what the wires do. Btw is it true that Reno is so close to hell you can see sparks?

No cup holders though :icon_razz

Yea, we all know the auto repair racket is filled with uneducated morons but no tech worthy of the name would do such a thing when there are so many better ways. Just tell us what shops you've worked/work at so people can avoid them/it like the plague...

The TEWD has the answer to every wiring problem or question you could ever have. http://www.cygnusx1.net/Supra/Library/TEWD/MK3/

Good grief. Especially about sticking something in the fan...

Just exhaust. There's a coolant plug in there that could possibly leak though.

Sigh. I tried. It's guys like you that make me question why I still bother with this place. edit: beaten by hvyman...

The mode is called Fail Safe and yes, that's exactly what's supposed to happen with code 31. You didn't state exactly what you checked but as hvyman pointed out it sounds like you only tested the air temp sensor and that has nothing to do with a 31.

Nicely done. Proves there's no substitute for proper signal tracing.

2.2k makes more sense. Your voltage measurement of THW at the ECU does not. Assuming it's accurate there's your code 22. Looks like THW is open. Don't need long leads...the car's chassis will do. I'd be looking at the sensor connector first though...

I hope not. I know you meant well though.

At least that proves it's not blown out like most stockers are.

Simply put it means the fault must exist for two key cycles before the MIL is illuminated. All the parameters required for the code in question must also be met. That can be fairly involved for some of them. Speed, rpm, temp, time, etc.

At 2.2 ohms it's no wonder you have a code 22. And again, it's better to test voltage. The ECU doesn't deal in ohms. At least not directly.

Bummer. And although I'm aware of a similar sounding idiom that raping over the coals with barb wire thing sounds pretty serious...

Welcome. It's an indication of how close the TCCS can get the mixture in open loop using the learned value. That's not an accident as Federal emissions standards are involved. The other thing to remember is O2 sensors have the least authority of any in the engine for what should be obvious...

O2 codes don't just happen. Several parameters must be met. Not to mention they're two trip logic. Depending on model year you may not get a heater code. Lastly, in a steady state condition the system defaults to slightly rich with a floating lambda input. About .9 iirc

Wouldn't it have been easier to do that after you pitted the valve cover gaskets? Hard to tell unless I bend my neck 90 degrees to the left...

Meh, it's OK. Just a bit cranky when after giving the rod and baiting the hook they still refuse to fish.