Carbon Build Up, EGR Blank, Catch Can Information

[gunnado]

60,000 Service booked for next Thursday.

[gunnado]

Just spoke to my local dealer

Has told me he doesnt want it on the road and bring it in on Monday

[Tony]

I reckon, it should be towed! What your describing is either an issue with the throttle potentiometer or more likely oil in the manifold. Turbo seals? I wouldn't start it again if I were you.
WARNING
You have a potential candidate for a runaway engine!

http://www.google.com.au/url?sa=t&rct=j ... Fw&cad=rja

If they get away that TB wont always close and smother them either.

[gunnado]

Just taken the Triton home did a 25 km run up the highway all good
was surging on start up and running like a bucket of sh#t but when it got to operating temp all seemed good.

[Wooragee]

Hi All,
Just Had new manifolds put in under warranty at 180000 k ( love my dealer) and was looking for a pic of the ball bearing mod so i can see which hose to block and will instal provent also.
The difference in performance is 30% as was running like POS before.
Thanks in advance.

[Tritonchad]

this might be a stupid question but does this affect only the 4X4 models ?
i have a 2011 GLR 4X2 Manual with 12000 kms. should i be worried about this yet?
the car is running smoothly and no surging yet.

[gregned]

Hi Tritonchad
All diesels are affected by carbon buildup.

[mattz]

Hi All,
Just Had new manifolds put in under warranty at 180000 k ( love my dealer) and was looking for a pic of the ball bearing mod so i can see which hose to block and will instal provent also.
The difference in performance is 30% as was running like POS before.
Thanks in advance.

It might be in this thread. viewtopic.php?t=6513

[91Geoff]

Hi team, has any R&D been put into the idea of blocking off the EGR, then plumbing air out of the intercooler back into the EGR pipe after the blank to prevent a CEL/limp mode due to underpressure faults?

It's a solid theory, though the ball bearing mod seems to be a lot easier to achieve the same result (no exhaust gases in the intake manifold).

[91Geoff]

Yeah i'd seen it discussed but i hadn't found any reports from anyone who'd done it and ran it for a while that's all.

Is anyone who did it having success? It's a bloody good idea.

[srb]

Yeah it's been done by a few of us on here. Tony and longranger were the pioneers of this mod. I've done it on mine and it works great. Not hard to do if you can weld or braze. There are instructions in the 160 page egr blanking thread somewhere.

[Trough Lolly]

Whats the benefit of running a ProVent as oppposed to a $25 supercheap catch can..?
Im going to use a cheap one and use the stainless steel scourer inside as pictured in another thread.

Does the same job, $140 less.

My 2.5 MN has done 45k now, been chipped for 20K of that with a 6mm hole EGR.
Only ever thrown one code, and that was a "knock sensor" code which happened on startup.

Never had surging "yet" but on ALL my chipit tunes, it blows ALOT of black smoke.

[irwazza]

Never had surging "yet" but on ALL my chipit tunes, it blows ALOT of black smoke.

Understatement!!!!!

[Trough Lolly]

haha i dont know why you complain, you drive behind me cuz your poxy 3.2 is slow and use my diesel fumes to save $$$

cheap charlie

[tritonmal]

Ok guys. I'm going to throw me blank back in. 2.5 nm diesel. Should I do it before or after the next service when the boffins at the stealership reflash the ecu with the new update. ??? Last time I had it it I think it caused something screwy and the scv went....

[tritonmal]

Hi guys just wondering what size provent catch can u got installed...??

[tritonmal]

Hi guys just wondering what size provent catch can u got installed...??

[mattz]

Pretty sure it's the 200.

[Cowboy Dave]

Pretty sure it's the 200.

[tritonmal]

Yep thanks guys. Just got to work out how the hell I get it in. ... Hopefully on the drivers side.

[domsta86]

Couple of quick questions regarding defeating the CEL after an EGR blank fitment:

- if you drill a 6mm hole in the throttle flap to defeat the CEL, does this cause a fast idle (ie more air gets through the throttle body when the flap is closed)? Or does the ECU compensate for this somehow (closes the throttle flap more to compensate for the extra flowthrough)?

- Many people say that a Chip It chip will defeat the CEL, but how? Does the Chip It mod just disable the CEL altogether? I understand that the CEL is caused by a negative intake pressure resulting from the loss of EGR flowthrough, not sure how the Chip It gets around this problem.

Cheers
Dom

[Tony]

What is your ride Dom?

ML and MN behave very differently these days.

[Cowboy Dave]

Do you have an ML or MN mate? The MNs with the latest ECU reflash will run a blank with no codes and no extra mods required.

On the chipit thing, I don't actually know the answer, but I gather it has something to do with the lies that it tells the ECU - intercepts the signal or something. The hole in the flap thing I've heard it reported that you get a rough shutdown but that's about all.

There are also other options to consider that you haven't mentioned.

[domsta86]

Thanks for the quick replies guys. ATM I dont actually have a triton!

I am going to buy one second hand when I get back from o/seas, looking to spend 22-25k, hoping to pick up an MN GLR 4x4 d/cab, <70,000 kms

I am not put off by the EGR issue, but just trying to understand how I can get around it. When I find the right vehicle I will obviously look at what has been already done WRT EGR (any intake cleanouts, blanks fitted, catch can, intake replacements maybe), and then I want to do the rest ASAP so I dont run into any issues down the track with a blocked intake. I have seen the write up on DIY intake cleanout, and that is one job I would rather avoid having to do!

[NowForThe5th]

- if you drill a 6mm hole in the throttle flap to defeat the CEL, does this cause a fast idle (ie more air gets through the throttle body when the flap is closed)? Or does the ECU compensate for this somehow (closes the throttle flap more to compensate for the extra flowthrough)?

The throttle flap doesn't actually do a great deal on these diesels - not like on a petrol motor. Engine revs are controlled by ECU and fuelling, not air flow.

- Many people say that a Chip It chip will defeat the CEL, but how? Does the Chip It mod just disable the CEL altogether? I understand that the CEL is caused by a negative intake pressure resulting from the loss of EGR flowthrough, not sure how the Chip It gets around this problem.

The chip doesn't defeat the CEL. All it does is feed information to the engine ECU to get the ECU to do what the chip wants (is programmed for). By drilling a hole in the plate you create pressure as though the EGR was open and no CEL results. The size of the hole varies - on the latest 4M41 it's 13mm and there are no CELs, nothing really discernible except a slight run-on at shutdown of a second or so because some air is drawn through the throttle plate hole so the engine isn't starved of air.