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Ok, after a bit of research I have a suspicion about what's going on but I'll have to run a few tests to verify it. What year is the car? Are there any connections to Vf?

Doward's right: There's one born every minute. You gotta love the phony science on that site. Typical ooga-booga designed to mislead the masses. These would actually be better for most 7M owners ;) : http://tinyurl.com/2rm8cb

Huh. I've never seen that happen. The ECU is programmed to set a code whenever the sensor stops cross counting for a certain period of time or faults to open or shorted. Codes 25 and 26. It doesn't set right away though. Needs to be there twice for a certain time with an ignition key cycle in...

Understand about the cig socket. There's a limiter in there or maybe a CB of some kind. I forget. I know little about the Maft Pro so thanks for the explanation. Based on what I read it's quite the gadget. Are you saying you have the stock sensor input on the TCCS floating? If so you should be...

You're welcome. Didn't mean to come across as Jargon the Magnificent, I'm just a stickler for proper terms. Since any electrical arc is comprised of plasma it helps to understand the physics behind the stuff. Ionization, etc. It is after all the most common form of "matter" in the universe...

Well, they're certainly right about one thing: spark plugs are the subject of much controversy, along with other "high performance" ignition products. Right up there with oil. It's why I very seldom get involved in threads about them. Electrode resistance is probably close to the bottom of...

No

Batteries huh? As a friend of mine likes to say: "Crude, but effective". Powering the WB heater from the stock circuit may work as long as the stock heater is disconnected and the WB heater doesn't draw more than the stock one did. In that case the ECU will be happy and you'll remain code...

You're running it like that? Stop now and find out what's wrong before it chews something up. Take the valve cover off if you have to. Gasket can be either. If not entire surface just be sure it's not too thick because you'll be loading the bracket when the bolt is tightened. I've done it both...

I wish I understood what you were saying ;). From what I see it's never going to work like that. Again, you either have a bad TPS or it's not adjusted right. Under 2,300 ohms means 2,299 ohms or less.

It should be flush. If it's leaking air oil won't be far behind. There's an O ring but I always cut a gasket for it too. No leaks in I dunno how long.

What Joe said. The dashpot keeps the throttle open for a bit after you come off it. Emissions device. It's the round gadget below the throttle body with the little hose and valve on it. Eases the throttle closed so some air is allowed past to burn left over fuel from when the throttle was open...

Where's IDL and E2? That's the one you need to be concerned with. It's what causes code 51. No, adjusting the TPS on the car isn't bad, just more of a hassle. It's easier to do with the TB off the car. Since you just proved the wiring is good the resistance you measured across IDL and E2 must...

41 is expected because VTA was open. Your gasket may well be the idle issue but all I care about is getting rid of codes as that should always be the first step. If 51 went away either the IDL contact is bad, the TPS needs adjustment, or the connector is bad. You didn't say if you measured it on...

If the belt were broken they'd be no spark. Doesn't mean everything is timed right though. If I were you I'd verify valve timing. What is cranking vacuum?

Can't help on 52 other than to say the two codes shouldn't be connected unless it's a major wiring issue in the main harness somewhere. Short those two pins and see what happens on the 51 though. If it goes away check idle quality. After checking idle try holding 4K. That way you'll recognize...

Brandon, just because the TPS checks out (no offense but I have no idea if it was tested properly) doesn't mean the wiring can't be at fault. Unplug the TPS and short IDL and E2 together on the harness connector to see if 51 goes away. No need to start the engine. If 51 remains the problem is in...

Changing the code would the best way but that's easier said than done. As CRE points out there are several ways to alter the conditions under which the valve functions by manipulating the signal. I seriously doubt it'd be worth it though as 99.9% of the time Toyota knows what they're doing. You...

Lmao @ Nick. Congrats on the two-legged tumor btw. A pity you weren't there. SupraMan: No sorry, wasn't me. I'm turbo.

None of that makes sense and the ECU shouldn't accept those values as valid. It sounds as if both TPS were oriented wrong when measured, the wrong pins were probed, or the meter was interpreted incorrectly. Moot points though, since everything seems to be working.