ECMlink MAF hz from MAFT when car not running?

[GsxMan98]

When my car is off the MAF in DSMLink shows 19.1 hz, shouldn't it be 0?

I unplugged the MAF and it still showed 19.1. By the way I have a GM MAF with MAFT all zeroed out.

 

[NHerron]

The GM MAF is very sensitive. It can read the breeze

Not sure why it is still reading with it unplugged though.

 

[GsxMan98]

That's what I thought but I kind of stumped why it doesn't change when I unplug it and it doesn't move from 19.1 till the cast is started. Then it will seem a little high like around 65 hz at idle.

 

[GsxMan98]

Anyone?

 

[Bouche Dag]

I wish I had an answer for you but that does seem odd. Just so you have a comparison, I am at 37-45hz at idle.

Perhaps your maf is bad? Do you have a different one you can test on?

 

[GsxMan98]

Ill try and get one and ill tell results.

 

['97 Cayenne]

kinda of sorta had the same issue with my MAP sensor for my SD setup. it was reading intake pressure with the car off. my issue was it wasn't getting proper voltage cause i tapped into the wrong wires. Something to look into

 

[NHerron]

Ill try and get one and ill tell results.

I'd be interested in seeing how that turns out

 

[GsxMan98]

I tryed a different gm maf and still same thing 19.1 hz, anybody else have this problem ever?

 

[NHerron]

I just noticed on my oem 2G MAF its at 10lbs/hr engine off according to my ECUplus EMS...

I hope someone pops in here with some more info because I'll be going the GM MAF route this summer..

 

[Talondvr]

Looked at one of my old logs and with the car off mine also reads 19.1 hz. I am at 35-42 hz at idle. Not sure why it's like that but I've never had an issue.

 

[Bouche Dag]

Just got myself DSMLink V3 full and I read 17.9hz when off... Perhaps this is normal?