Ado1379

Ok so good news I hope. Techstream has found a short/open circuit in the injection system and I have an error code for an injector too. I used the active test to individually cut fuel to the cylinders. And sure enough there was no change in the idling when I did cylinder 3. So this poses a few new questions... firstly, if you take away all the stuff about thinking it was the turbo, could this explain my symptoms? (Loss of power, rough/jerky idle, slight knocking noise under the bonnet) And secondly, is it best to get this injector repaired or buy new? I can code in the new injector with Techstream.

It’s fine, I haven’t done anything further since we talked as I was using my other car for a bit. Now I finally got Techstream working I can get a more detailed look into what’s going on. Also going to fit a new DPF and get the ECU sorted so it’s ‘legal’ again haha.

As above really. Do they need to ‘coded’ to the engine? If so, is this something that can be done through Techstream? I don’t really want to fit it until I have all the info. Thanks its for an IS220D

Hi, did you ever find out which actuator was which? I still haven’t sorted this problem haha

The amount of times I hear this at work! 😂 as for the problem of backfeeding other systems. A simple diode in the right place should stop this. Make sure the poles are the right way round though or you’ll get absolutely nothing on you’re LED 😉

Ok, I’ll do that tonight. Would having the egr blanked off have an effect on that sensor do you know at all? Mum also having a slight smoke issue but I’m sure that’s down to the 5th injector and having no dpf

Well now I’m absolutely sure it’s the wastegate I’ll start fault finding. first plan is to get it fail again then unplug the vacuum hose and see it’s pulsing 12v at the plug. Causing the vacuum to open and close

So the actuator that is at 45 degrees is the wastegate. And that is the one opening and closing when I get the fault. Interesting

Thanks guys, should keep me busy for a bit. I have the techstream in order I’m just waiting for it to turn up. I’ll keep you updated

Well if anything it’s a new avenue to go down. when the car loses power it won’t even rev above 3000 RPM! Where can I find the SCV on this car or is this where I have to take it to a mechanic...

The car failed on me as was getting fuel, the wastegate actuator was the one moving. I’m intrigued by this. Would I get any other symptoms? The car does take a good 3-4 seconds to start up when cold, then over revs for a few seconds before idling normally

never had an engine management light

So it’s definately not the wastegate. It failed on me just then so while the engine was running, the actuator arm was down, I disconnected the vacuum and it shot straight up, I then connected it and it moved straight down again. So it can’t be stuck. i think you’re right, I need the techsteam data

okay, nothing was done with this as far as I am aware, but seeing as though the EGR is blanked, I could disconnect this? It uses the same air feed as the wastegate vacuum valve. So maybe because this cooling actuator is constantly opening and closing it’s reducing the vacuum input (or lack of) on the wastegate? I maybe talking nonsense too 😂 it also seems to start playing up when the engine is at operating temperature. Reading about these cooler egr coolers they only kick in at operating temperature?

Yes haha! but I originally thought this was the wastegate. And this is the actuator that is stable until the car fails then it keeps opening and closing. So I’m trying to figure out what that actuator is?