Started by Gaz2405, March 11, 2019, 20:39
0 Members and 1 Guest are viewing this topic.
Quote from: Anon on January 15, 2023, 19:42Can you slip the inlet pipe off the throttle body, then put your finger down the hole and block the IACV orifice on the side? If it stalls instantly you know there is too much air going round the idle control bypass route for whatever reason.
Quote from: Gaz2405 on February 5, 2023, 00:36Wife's away this weekend, so got bored at 11pm.Into the garage to fit new power steering lines.quick while she is away anything needs cleaning in the dishwasher or washing machine so she will not no .act fast
Quote from: puma2 on February 5, 2023, 09:58Quote from: Gaz2405 on February 5, 2023, 00:36Wife's away this weekend, so got bored at 11pm.Into the garage to fit new power steering lines.quick while she is away anything needs cleaning in the dishwasher or washing machine so she will not no .act fast Oh we're on a level on that.If she gets home and the dishwasher has been emptied and put away, she knows car parts have been in there. Cam cover,chain cover, inlet manifold, rear arms, they've all been in. 😂
Quote from: Call the midlife! on February 5, 2023, 16:13You don't think you've stripped the threads on the vvt filter housing do you? Speaking from experience it's easily done and will blow past the threads if you have.
Quote from: Anon on February 11, 2023, 22:12I'm not sure how to get EMU to control this type of idle air valve correctly, they seem to offer little in the way of documentation for it.On the screen shot you sent a while back you have it set for 200hz pwm using Hbridge1B. Also you have the TPS set to 1% idle on, 2% idle off.... I've gone wider so the idle strategy kicks in below 5% instead to try to be more forgiving - I still don't have it working correctly mind.Toyota wire it to have 12v to one pin, gnd to the other, then I think the ECU emits a PWM waveform to flutter the rotor inside. This page details their operation really well.https://alflash.com.ua/idlet.htmThat video isn't for the EMU, but they at least talk about this type of valve although it is the dual driver type, where I think 1zz uses the single driver type. https://youtu.be/8odrvOQqZ-U?t=274I was thinking of plugging a spare IACV into the harness and watch the valve move to see if its even controlling it properly. Then getting the scope out on a stock OEM car to watch the waveform.
Quote from: Anon on February 12, 2023, 08:35With all throttle bodies like this as I've taken quite alot of them apart and then reassembled and set them back up to work eventually OK; you set up the stop screw so you can just see the finest crescent of light over and under the butterfly. You have to keep slapping them closed and open over and over, then look up at the light, adjust the screw and lock nut. It's quite a fine line to find.If it is to closed you find the throttle jams/sticks under vacuum conditions and you have to press the pedal pretty hard to overcome the jam. The little gap needs to be small enough so it won't quite idle nicely on that air gap... maybe only supplying 50% of the required air at idle. But enough to try to stop it from stalling out quickly.