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10 hg? Not good...

I'm sure to anyone with the IQ of a speed bump it would've been intuitively obvious. Then again with the never ending stream of "simple" questions here I could be wrong...

10 is fine. It's normal for timing to move around when the jumper is out so don't worry about it. A little above 500 isn't too far off. You really need an external tach to be sure. Be patient. The ECU will need a little time to collect the learned idle values it lost during the time it was...

As CRE said it's a switch in the TPS. Supposed to be closed when the throttle is closed. With it open the idle speed control and stabilization systems won't operate. It you don't have a code 51 it's working so forget about it.

Not normal. Usually caused by a worn key.

Pssst...here's two things that have never been mentioned in the history of this forum: Codes? IDL contact closed?

Don't be sorry. I have a gruff exterior but inside I'm all marshmallow. There's more than one owner here who could confirm it if I let them. I know you're only 17 and doing your best, it's why the Old Coot (tm) is willing to help. Do what I said and report back or PM me if you need more info.

Hey, the boltdepot. I buy from them. Recently needed a couple of M10X160 for a project on the devil car and they were the only ones who had them in small quantities. Shipping was a killer though.

Well, what part of "assuming the wiring is OK your button should have back fed the signal and satisfied the ECU" wasn't clear? ;)

Coolant line for the ISC and TB exits through the intake manifold down there.

Sorry guy, not even close. They each do something different.

No, it was meant for him. Is removing oil from plug wells rocket science requiring internet research? Especially with the 3rd cover off?

Here's a tip: Get out of the car repair biz ;) Since the code 12 is gone forget about the CPS pickup coils. If you need to measure them in the future it's all spelled out in the service manual. TPS adjustment is also shown in the book. First a little about code 51 and what causes it. 51 is...

:nono:

I'm not familiar with the SC system so I'd have to look at it. They may be doing the heat pump thing. A lot has changed in MVAC since the MKIII came out. Many systems are now using variable displacement compressors for example. I'm 609 MVAC and 608 Universal HVAC certified but since I've never...

Exactly. I don't recall Toyota ever using CCOT so as long as the TXV is controlling superheat the comp shouldn't cycle. Not saying it won't if the ambient gets low, the fan is low, or something goes wrong but it normally won't. It's especially unlikely to do so at a 90 ambient. Drummin: CCOT...

Disconnecting the battery will clear codes. The ECU needs to know when the engine is being cranked. Code 43 is caused by no 12 volt signal at the STA (start) terminal of the ECU while cranking. The signal comes from the same circuit/wire that makes the starter work, which of course comes from...

If the starter relay in the kick panel clicks the problem isn't alarm related.

I don't believe SC300s use a CCOT system. If so the compressor will not cycle unless the ambient is too low or some other problem causes a loss of superheat.

I'm assuming you had the code 43 before you installed the starter pushbutton but if you didn't the button itself will cause it. Fix the starter circuit.