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Agreed. And the OEM toyota gasket does the same thing.

Better to not make sweeping statements.

Yeah, I assumed that was trailing throttle fuel cut with a bad IDL signal and a wide open ISCV.

The warm idle should be 650 rpm. If its 850-900 you still got problems.

No. Fix it right. It seems like you have a potential wiring problem between the ECU HT pin and the black heater wire that reads 0V when the the sensor is unplugged. First step would be to measure continuity from the HT connector pin at the ECU and the corresponding pin on the O2 sensor.

Yes. More clutches in the clutch pack of the GTE.

Better not tell the guy with his new Nikon D4 that his wife's point and shoot is better cause its got a plastic lens!

LOL. Soo, as far as I can tell your diagnosis involves plugging and unplugging sensors. Don't suppose you ever did the Vf measurements asked for in post #22. Have you by any chance measured the A/F either with a wideband or emission analyzer? I am reminded of the joke where the guy is...

Windows movie maker, the latest version, is pretty good and the price is right.

OP, your car is running lean. AFR is 14.9 on the low speed test, and 16.3 on the high speed. Any stored codes in the ECU?

LOL. Even in my wildest imagination I cannot see how removing the air cleaner could give a "rich enough" mixture.

Pull the spark plugs one by one and see if the knock goes away. If it does, your have found your bad bearing.

Even if your EGR is working you won't pass. Read JJs post above.

A slight omission from the first post! You sure about code 32? That's only for 7M-GEs. 31 is what you should be seeing.

Read his post. Fuel cut, not just jumpyness. Not possible from TPS.

None of those codes cause fuel cut. If it is truly hitting fuel cut at 3000rpm, then he should be seeing a code 31 for a bad AFM. I'd recheck the codes to make sure. TPS won't cause this, nor codes 22 and 43. With those codes this car must be a pain to start when cold though. Code 52 won't...

I've never looked inside one of those. What year is it from?

There is a unit out for beta test right now. The hardware side of things is solid, but the software still needs work.

Well, it couldn't have passed test 6. http://www.cygnusx1.net/Supra/Library/TSRM/MK3/manual.aspx?S=EC&P=17

Very cool.