Fault code help (again)

[disco_thrasher]

I have a D2 TD5 i installed a nice big shiney intercooler a VNT turbo and egt gauge also removed inlet manifold for acid clean wow was that caked with sludge:eek:

okay all went back okay but i am reading air-flow (intermit) fault
and the usaul suspect since i removed the egr egr valve stuck open

can someone help me find tghe cause of air-flow (intermit) checked all connections to maf nanocom says maf is running good at idle sits around 56

and secondly is there any way of stopping the egr fault apearing the whole time suppose its not that much of a issue

thanks Kelvin

[Hamish71]

Hi Kelvin,

I never got the EGR fault...but then again, I ripped out EVERYTHING, including all the vacuum switches etc behind the coolant reservoir. I didnt get MAF either.

What I do get, is turbo overboost (easy), but the one I dont understand yet is "driver input error 1 - intermittent" (or something like that). I thought TPS, but I have replaced the throttle assembly, and fault still appears.

How does it run? Mine still like a dog....waiting for some Tombie magic to hopefully fix the problem.

[disco_thrasher]

mine seems to run fine , only problems been the air flow and removing a airlock from the cooling system but airlock almost done if not done

just wanna get down to the bottom of air flow circuit (intermit) fault

[Hamish71]

if your melb based, i have a new maf u can try.

[disco_thrasher]

thanks but i am way up Qld
Maf has been tested
could it be the massive sucking power of the VNT which is causing it to fault

[Hamish71]

just disconnect it to find out

[disco_thrasher]

I have a D2 TD5 i installed a nice big shiney intercooler a VNT turbo and egt gauge also removed inlet manifold for acid clean wow was that caked with sludge:eek:

okay all went back okay but i am reading air-flow (intermit) fault
and the usaul suspect since i removed the egr egr valve stuck open

can someone help me find tghe cause of air-flow (intermit) checked all connections to maf nanocom says maf is running good at idle sits around 56

and secondly is there any way of stopping the egr fault apearing the whole time suppose its not that much of a issue

thanks Kelvin

Any help on this will be helpfully please guys
maf has been disconected replacement maf tried all wiring checked over

could the VNT be causing this by trying to suck more air than can be supplied

[disco_thrasher]

so i observed to day when i put the computor onto the nanocom the air flow would peak up to 650,00 then suddenly return to 000,00 and the fault will be created by that so does this mean the turbo is sucking all the air and maxing out the MAF which is causing it to fault
cheers Kelvin

[Hamish71]

Im not sure its related....but I know TD5 Alive do a MAF "bypass hose" to try and solve a problem with their "larger charger". It looks dodgy as,think I have a pick somewhere......

[Hamish71]

...here it is......https://www.aulro.com/afvb/images/imported/2010/09/779.jpg

Apparently TD% ALive " use at the moment a bypass hoes which lets some air go into the engine without passing the maff."....

becuase..."Hybrid turbo and tune running on
my Td5 it is causing the MAF sensor to go out of range (causing
intermitent fuel cut at high RPM) and that an uprated MAF will fix
this?"

[td5inside]

so i observed to day when i put the computor onto the nanocom the air flow would peak up to 650,00 then suddenly return to 000,00 and the fault will be created by that so does this mean the turbo is sucking all the air and maxing out the MAF which is causing it to fault
cheers Kelvin

That is exactly what is hapening Kelvin.

Let me see if I can explain this correctly in English (I´m not a native speaker)

There is a problem with the MAF voltage. Maf sensor as a default value and a maximum value of 4.9v. What happens is that with more air in the air filter box you raise the v value and the ECU simply cuts the injection untill the MAF v comes down to "normal values".

Solutions:

1 - Turning the MAF off - The ECU will work with default MAF Values
2 - The bypass solution:

https://www.aulro.com/afvb/

https://www.aulro.com/afvb/



3- What we, at td5inside, are trying to do is creat a small box (a bit like the turbo boost box) that allows this value to go up!

Regards,
Td5inside

[disco_thrasher]

i have been looking at trying to create this myself as the VNT sucks alot more than std turbo
thanks for input
cheers Kelvin

[Hamish71]

Ive now posted this in another thread as well, but Kelvin, what syptoms ar you trying to cure? Im still having problems sorting out my VNT tune as well.

[feraldisco]

2 - The bypass solution:

https://www.aulro.com/afvb/

seems hard to believe that such a small post-filter hose can make much of a difference - I thought 2-inch ID hose was recommended for bypass?

[Hamish71]

Kelvin,

Here is an idea....Why not put the pipe in as shown in the previous post. Use 12mm (1/2in) pipe. Take it from the airbox to the crankcase breather hose inlet on the 90 degree connector thing that is there. Take the crank case breather hose and just whack on (for now) a 12mm crank case breather filter using a plastic hose joiner, or brass if you insist.

I run a provent, like this (and for those not familiar I also run a VNT):
https://www.aulro.com/afvb/images/imported/2010/09/403.jpg
Im thinking, Im going to disconnect the provent outlet hose from the provent, and connect that hose to the airbox. Then, on the provent outlet, Im going to stick one of these from DRIFT PERFORMANCE:
https://www.aulro.com/afvb/
Total cost of experiment.....$14 for the filter (autobarn)
Probably $10 for barass fitings for the airbox.

Id be interested in TECHNICAL comments.