Dead Zone on an AFM sensor?

[IwantMKIII]

I just noticed tonight as my car stalled out the 2nd time, my AFM sensor readings at idle were 3Hz. This tells me the AFM is not registering at all at closed throttle. However, the instant I apply any throttle it registers just fine.

I've also noticed that the 'dead zone' is intermitten, sometimes it registers a normal 25-30Hz other times not at all (aka 3Hz).


When the AFM does not register the engine mostly just stalls if I hit the gas a bit and let off, if i ease off its more likely it will idle even if the AFM is not registering correctly.


Thoughts?

PS, i understand this will probably just end up leading to replacement but, personally, i've never heard of this issue

 

[Mr. Y]

I've got one AFM that acted like you said. Check engne at idle but everything fine after 2K rpms. Replaced AFM - problem solved.

 

[Kckazdude]

With you describing it as intermittant I would be more suspect of the wiring or connections than the sensor.

 

[IwantMKIII]

With you describing it as intermittant I would be more suspect of the wiring or connections than the sensor.

i was thinking this, but then why would it work if i even slightly touch the pedal...

 

[Kckazdude]

Engine torque and the fan moving things just ever so slightly.

 

[supramang]

wow i think i have this same problem! i can drive the car with no problems and then the next time i start it code 31 pops up almost immediately and the motor kind of bogs down. So i checked the wiring and refitted all the pins and started up... no engine light:icon_bigg The next afternoon CODE 31 pops up and im back to the drawing board:nono: I reset the code and then held it at 2k on start up and no light. Then i drove it like 50 miles and it popped up as i pulled up to a red light and as it turned green i got pissed and mashed the pedal almost out the floor and the damn light turned off LOL! Is your problem pretty similar to this?

 

[gaboonviper85]

ive been in the car when this happens and the check engine light doesnt come on i believe.

 

[supramang]

Hm... i dont know then because everytime this happens it idles pretty bad and then the light comes on. It seems to be worse when its warm and humid out.

 

[gaboonviper85]

Hm... i dont know then because everytime this happens it idles pretty bad and then the light comes on. It seems to be worse when its warm and humid out.

yeah the car does idle like poop

 

[supramang]

My car never dies when it happens? But it hasnt happened since Tuesday night so hopefully its done with its b.s.!

 

[viper92086]

convert to maft, best investment ive ever made. i can have a airfilter right off the turbo now

 

[figgie]

Supramang...

So Figgie checked the wiring and refitted all the pins and started up...

ehem!


there I fixed your post for you hehe

 

[supramang]

Supramang...



ehem!


there I fixed your post for you hehe

Well not sure how many people know you but yes yes you get the credit for the wiring action lol! ....................... i get the rest

 

[supramang]

But in other newssssssss... whats the latest on your afm sensor??