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From factory 1UZs have a switching valve on the power steering line so that when the hydraulic pressure goes up, it creates an air leak past the throttle and idles up then engine. Common toyota thing. Fit the valve, along with the hoses (goes into the front of the manifold from memory) and your...

Thats the vacuum switching valve for evap but all the wiring diagrams I have list the trigger wire as white... not brown. Your image shows a very light brown, and the brown wires are usually a lot darker. It's possible that it's actually a white wire that is stained from age/heat/etc (?). The...

Oh, the joys of an engine conversion. Its the hundreds of tiny jobs (that nobody sees) that need to be done otherwise the whole thing falls apart in a screaming mess. Like today... all of it. When the shifter was installed months ago, it encroached on the area where the climate control ECU...

With a basic tune, rich mixtures and very conservative timing, it feels very strong. Datalog of today's testing shows boost topping out at 6psi (gate spring). The highest TPS was 45%. I can't wait to see what 100% throttle and 14psi feels like!

Have you looked here for the right wiring diagram for your ECU? Lexus/Toyota Engine Specs and Info – Lextreme

Heat shields done and dump pipe wrapped

Can you provide a wiring diagram for the E46 AC system?

The AC input to your ECU will be a signal from the A/C control module to indicate the air conditioning has been switched on/off. The ACMG provides ground to trigger the relay that switches on your compressor clutch and monitors the voltage to confirm the compressor is engaged. This process of...

1. Yes, that's what I would try too. 2. Sounds OK 3&4. Sounds OK 5. The test from #1 would either isolate it as a fault, or confirm it as a possible cause. 6. NSW and STA are for starting only - you should also have position inputs from each shifter position back to the ECU (i.e. PRD2L) 7. Are...

What year model is your Celica? Many people have swapped a 1UZ into all sorts of Celicas - just search the forum... or google images. 1JZs can fit too. You may be able to find an adapter to fit the 1UZ onto your Celica 5-speed if its a steel-case. Bellhousing & Adaptor Plates Toyota V8 1UZ, 2UZ...

If the plugs are wet then it sounds like the ECU is turning on and getting reference from your cam/crank sensors. Double check the wiring from your igniters to the ECU.

If you're not losing coolant, its likely to be condensation - a normal by-product of combustion. Engines that do short trips where the exhaust doesn't get hot enough, water can build up. In some cases, with mild steel exhausts, it can completely rust them out. It becomes more noticeable on cold...

Saturday morning, the car got stripped back to the front of the motor and I started insulating the plastics. Cut short but family commitments, and yard duties, I didnt get stuck into it again until Sundary arvo. The two covers most exposed to manifold heat done and I finally finished the...

Soarer Troubleshooting guide points (in order) to: Shift solenoids While the shift solenoids seem to be within spec and click when energized, that doesn't mean much if the solenoid is blocked or damaged Throttle Position Sensor Check voltage sweeps at VTA pin on ECU when you move the throttle...

GM LS1 - its a 5.7 litre but significantly smaller than a 1UZ. Lots of potential for upgrades with aftermarket parts.

Just to be clear, when you accelerate in Drive, the transmission stays in first and wont shift into second? Does the transmission behave normally when you shift manually into 2 or L positions? If thats all good, based on your measurements of S1 and S2, if it wont shift into second then I would...