Steve Bull Posted April 30, 2014 Report Share Posted April 30, 2014 Does anyone have anyexperiance with these engines and the idle control. Looking at the system they need the use of 4 aux ouputs in stepper control. Can this be reduced to just useing 2 just to control the valve as all two do is engage the clutch. Could this done just by givbing it a perminant live feed.  One reason for asking is to free up two outputs for PAS control and fuel pump. Quote Link to comment Share on other sites More sharing options...
Simon Posted April 30, 2014 Report Share Posted April 30, 2014 Hi Steve The 1UZ uses a 6 terminal stepper motor for the idle control, there is no way to reduce the number of control lines required. It could be an option to fit a 2 wire solenoid and do away with the stepper motor. Quote Link to comment Share on other sites More sharing options...
Dave Kriedeman Posted May 1, 2014 Report Share Posted May 1, 2014 Hi, Is your 1UZ a dual distributor engine or 8 x COP. If it is COP, setup your ignition as wasted spark and configure the ignition output wiring for wasted spark you will free up 4 ignition outputs to use as AUX O/P. Just an idea. Regards Dave. Quote Link to comment Share on other sites More sharing options...
Steve Bull Posted May 2, 2014 Author Report Share Posted May 2, 2014 Thanks for that  Yes its coil on plug, but it wired for sequential.  But wasted spark might be better.   How do you change fuelling for bigger injectors as I'm using the 1uz standard map but trying to alter it for my set up.  The engine fired up but there was  to much fuel for it to run.  Quote Link to comment Share on other sites More sharing options...
Dave Kriedeman Posted May 3, 2014 Report Share Posted May 3, 2014 Hi Steve, You need to go into the ECU settings tab on the left of the page. Then select the FUEL tab, then Fuel setup, then fuel main. You need to then adjust the MASTER FUEL ms value to a lower value. Do you have an Air Fuel Meter as other influences will be active during first start up such as post start multipliers, warm up enrichment multipliers and timers etc that will add to the fuel amount injected. You are best off having an AFR meter hooked up, fire the engine and try to adjust the fuel master until the AFR IS AROUND SAY 12.5-  12.8:1 with the engine rpm held at say 2000 rpm . That way the AFR is  safe and you can warm the engine up until the cold start enrichment parameters become inactive. If you can post up your PCL file I can make up a starting file for you. I have attached a screen shot of the tabs etc open to show where the fuel master is. Regards Dave. Quote Link to comment Share on other sites More sharing options...
Steve Bull Posted May 3, 2014 Author Report Share Posted May 3, 2014 Hi, thanks  The injector are now 550 cc rather than the standard (175cc)  1uzfe ones.  I take it i have to reduce  from  11ms, as it is now, down to say 6ms. It ran but was only for second or two.  However, you could smell the fuel.  Quote Link to comment Share on other sites More sharing options...
Dave Kriedeman Posted May 3, 2014 Report Share Posted May 3, 2014 Hi Steve, What brand of injector did you fit. We need to also set the injector dead times. Have you calibrated the MAP sensor and TPS. Regards Dave. Quote Link to comment Share on other sites More sharing options...
Steve Bull Posted May 4, 2014 Author Report Share Posted May 4, 2014 Hi, i set the injector times  to 4 ms and the thing ran.  But had to increase to 8ms for the throttle to work.  The TPS calibrated but then fell out ill have to check that.  The MAP took a while to callibrate, a bit of trail error.  The injectors are an upgrade for the 1uzfe there Nikki 550cc @ 52psi high impedance.  Thanks Steve Quote Link to comment Share on other sites More sharing options...
Scott Posted May 5, 2014 Report Share Posted May 5, 2014 Hi Steve, The 1UZFE VVT engines (COP) I have seen all use an electronic throttle system for idle control. It is a strange system, as the FPS and TPS are both located on the throttle body, and it uses a cable, but it is still an e-throttle setup. If you looks under PCLink Help > Wiring Information > Miscellaneous Diagrams > Eletronic Throttle > Toyota Clutched Electronic E-throttle you will see the wiring and tuning information. Scott Quote Link to comment Share on other sites More sharing options...
Steve Bull Posted May 5, 2014 Author Report Share Posted May 5, 2014 Hi Thanks Does that mean you can use this as an electronic throttle control without the  link 'E Throttle'.  I had converted it to manual just by altering the cable end of the throttle to operate on pull but it can be easily changed over. The engine ran smooth today up to about 3000 rpm but as it was small throttle opening the turbo didn't cut in.  Still a long way to go.  Anyone with any ideas pass them on.  Steve Quote Link to comment Share on other sites More sharing options...
Scott Posted May 6, 2014 Report Share Posted May 6, 2014 Hi Steve, If you want to run the e-throttle it is going to depend on your ECU model. Here are the options: G4 Silver Xtreme Wire in ECU - Not many of these were built, but they had internal e-throttle. G4 Storm or Red Xtreme wire-in ECU - You will need an external e-throttle module. G4 Atom wire-in ECU - It's not possible. G4+ Xtreme wire-in ECU - Activate the internal e-throttle upgrade. Â You could and fix the 1UZ-FE throttle body so that when the cable fully moves the FPS it also fully opens the throttle plate. That way you would not use the e-throttle and it would work like a normal mechanical throttle. Scott Quote Link to comment Share on other sites More sharing options...
Steve Bull Posted May 8, 2014 Author Report Share Posted May 8, 2014 Thanks  That's more or less whY I have done. One problem is that the ecu engages the throttle clutch so the cable is stiff and closes slowly.   Quote Link to comment Share on other sites More sharing options...
Steve Bull Posted May 15, 2014 Author Report Share Posted May 15, 2014 just need to check, what is the correct setting for the standard 1uzfe coolant sensor. Â I have aux coolant sensor as well but they never read the same Quote Link to comment Share on other sites More sharing options...
Scott Posted May 16, 2014 Report Share Posted May 16, 2014 Hi Steve, Both the base-maps I have for 1UZ engines have the ECT as using a standard bosch calibration. How much variability are you seeing? Bosch specifies that the sensors are ± 5% accurate. Did you get your cable sorted? Scott Quote Link to comment Share on other sites More sharing options...
Steve Bull Posted May 18, 2014 Author Report Share Posted May 18, 2014 the ECT standard sensor throgh ecu was at, Â The throttle side of things ill go for using th 1uz clutch on a relay. On when TPS IS lower than 0.6%, idle control. Plus that will free up on output. Quote Link to comment Share on other sites More sharing options...
Steve Bull Posted May 19, 2014 Author Report Share Posted May 19, 2014 standard sensor via ecu read 75 while  the after market was 50 degrees 'C' Quote Link to comment Share on other sites More sharing options...
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