VZ Adventra - 2021 Lockdown Project

[Davemac]

What’s the MAF readings like?

Was going to ask this too. My Bank 2 Lean was the MAF sensor covered in the filter oil throwing off the readings.

 

[krusing]

@Fu Manchu @Davemac
I will check that on the weekend,
Funny you both ask, as I have been looking for a list of standard/acceptable levels for the live data readings.

However, the MAF and housing was covered in a oil film
I removed the MAF sensor carefully and cleaned that with contact cleaner,
And cleaned the MAF housing and intake piping with degreaser, hosed it down, used compressed air to remove the excess water, and wiped it dry with cloths,
So all the intake plumbing is clean.

But never had a MAF DTC.

It’s back on the road tomorrow
So in the next few days, time will tell.

 

[Fu Manchu]

I wouldn’t expect a DTC. I’ve had three that have done that.
Clean out the plugs too.
Issues with aftermarket brands.

 

[Davemac]

@Fu Manchu @Davemac

I removed the MAF sensor carefully and cleaned that with contact cleaner,

I did that too with contact cleaner but it turns out that proper MAF cleaner is the way to go as I still had issues and ended up with a new VCM OTR and custom tune and now it runs great and no codes thrown.

 

[krusing]

What’s the MAF readings like?

MAF Sensor volts 1.2v
MAF 3.17 > 3.24 g/s
Intake temp 39 deg
@ idle speed of approx 600RPM +/- 10 RPM

 

[krusing]

My next plan of attack, is I am going to swap the Coils over from side to side,
And try a process of no elimination.

 

[krusing]

I am also assuming the Coils and injectors are the original ones, as the Adventra has clocked over 255,000 k/m today, and little history is known of it,
so it’s possibly time to replace them anyway.

 

[Lex]

I am also assuming the Coils and injectors are the original ones, and f so, the Adventra has clocked over 255,000 k/m today, and little to history know of it,
so it’s possibly time to replace them anyway.

If done that many km, just change them out for some new ones.

 

[Fu Manchu]

MAF Sensor volts 1.2v
MAF 3.17 > 3.24 g/s
Intake temp 39 deg
@ idle speed of approx 600RPM +/- 10 RPM

I'm trying to find the recommended value, but to me that should be around 5g/s

 

[krusing]

If done that many km, just change them out for some new ones.

I have to agree,

The amount of time spending swapping/changing parts,
I have other/better things to do than keep pulling it apart,
The biggest disappointment is not knowing the history,
As it’s like playing Russian Roulette.