Thread: Td5 V8

Originally Posted by TheEntertainer

Thanks heaps mate, I've been wanting to replace the silicon hoses for some time now, so will just get that done.


I can't get it to run on a VM or old laptop..., did you use the nanocom csv viewer or something else? and if so, are you running windows 7 32, with excel. I'm using power BI but can't quite get it to look the same as the one you are seeing. For the graph you posted is that turbo pressure, Airflow and Accel. track 3?

Cheers

Jan

I use Mega log viewer, I was put onto it by offtrack.

It's a paid program but very handy, and can have calculated fields added.

The three values that I've got plotted are all estimates created from the nanocom csv.

Whilst they are estimates, they are pretty accurate based on tests I've done here vs the actual ECU values.

So I've used track 1 as throttle, but you need to do more than just use it, it needs offset and slope calculated.

The other 2 are the calculated mass of air in the cylinder from the MAF and the MAP, they should be pretty close to each other, and the should definitely follow each other as far as "trends" go.

Yours do not.

Cheers
James

Hi,

Did this one with Power BI desktop after adding an interval of one second as column 1.

power bi.jpg

and for those interested in the mega log here is the comparison.

power bi vs megalog.jpg

MegoLog is the clear winner!

I replaced the two hoses on the Turbo side, here is the csv for interested and a pic of the graph.

TS003.jpg

After starting the car cold, boost sits on 28psi until the car is warm, around 4-5 minutes, then it drops down to 2-3 at idle and 15-16 at revs.

Is it normal for it to stay so high until the car is warm?

cheers

Originally Posted by TheEntertainer

After starting the car cold, boost sits on 28psi until the car is warm, around 4-5 minutes, then it drops down to 2-3 at idle and 15-16 at revs.

Is it normal for it to stay so high until the car is warm?

cheers

That is all completely wrong, something must be wired incorrectly.

The only other thing I found is that compared to some of the you tube videos, it does take a lot of strength to manually move the waste gate forwards and backwards. With a vice grip I still need long screw driver and use some leverage to move it.

The wastegate shaft should be fairly hard to move.

The fact that the 2 sensors are reading so differently to each other would suggest either a failed sensor, or a problem in between them somewhere.

When you consider the smoke, that points to lack of air, so the ECU is fuelling based on MAF, which is why you have smoke, as according to the MAP sensor, the air is not not making it to the intake.


But that's a broad diagnosis from miles away behind a keyboard!

It's really difficult to sort.... If you continue to have issues, take it to an LR mechanic.

You know that feeling when you realised you swapped the wires around.... Bugger... thought I was going to melt in my shoes. When configuring the ems unit I changed channel 3 to read boost, I must have accidently shifted one up before entering the menu. At least now I can report back what the oil pressure sender is doing.... 28psi until the engine is hot and then the switch opens and it drops down to about 4psi and up to 16psi when driving.

Apologies for the goose chase, at least now we should get the boost right after the turbo and be able to compare it with the map sensor.