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^ This, except it's simple to do wiring-wise. Using a transponder or print reader would be better.

Yes, the gage and wiring are fine. See, this is why stuff needs to be tested by the book or using another method that definitively verifies it. Your changing the sender meant nothing. It was just swapping of parts and it appears you swapped one bad part for another. The engine should run with...

Again, it's all in the book. No offense dude but you're starting to come across as helpless. http://www.cygnusx1.net/Supra/Library/TSRM/MK3/manual.aspx?S=BO&P=52 I would not be removing the cluster unless there's 12 volts on the wire *and* the gage doesn't move when the wire is grounded...

Meter on ohms, either probe to sender wire, other probe to ground. The key should be off. Connect the same way for voltage but turn the key on. No need to start the engine. Infinite resistance or a lack of voltage indicates an open circuit. Or you can briefly touch the wire to ground and see if...

Yes, but not in your case. And no scanner is needed nor will one work. I suggest you RTFM...

The Y-B means yellow-back. Everything you need to know is here and on the next couple of pages: http://www.cygnusx1.net/Supra/Library/TEWD/MK3/manual.aspx?S=Main&P=137 Also look here: http://www.cygnusx1.net/Supra/Library/TSRM/MK3/manual.aspx?S=BE&P=37 There's at least two ways to...

If it was really fuel cut they'd be a code. Since there isn't it's not.

Then after you get a new AFM you need to fix whatever else is wrong. Start with the TPS...

Huh? Unplug the AFM and with care you can drive the car all day long...

In addition to keeping raw HC out of the environment (something you appear to care nothing about) the canister keeps the tank at 2 psi.

Crack me up. It's like watching a monkey trying to screw a football...

That's a bourdon tube gage. Check around and you'll find the answer.

I think the point being made is while you may be exempt from testing it's still criminal to tamper with emissions equipment in every state regardless of a vehicle's age. It's also a federal crime.

Iirc it's the bypass path. Put another way it needs to flow...

Must be...because metacognition could never be a possibility right? :icon_razz

So what's the strange part? One of us is confused...

The main relay is what supplies +B and +B1 to the ECU. Without them the system will be dead. It works like this: 1) IGSW goes high 2) M-REL goes high 3) The main relay supplies +B and +B1 4) The box wakes up. Course, you'll need the associated grounds too...

:icon_razz

http://www.cygnusx1.net/Supra/Library/TEWD/MK3/manual.aspx?S=Main&P=47 Assuming the EFI fuse is good no + B likely means no Main Relay.