Running Lean Suspecting Bad Mass Airflow Sensor

[jackal]

I am running lean with stock injectors and ECU. Did a boost leak check and sealed up the leaks but low fuel trim still showed lean. The MAF was showing 25Hz to 31Hz at idle. Seemed a little low and cleaning it didn't help. I also noticed that sometimes it would go to 0Hz while it was idling but hasn't done it recently. I tried unplugging the MAF sensor and the throttle response improved with no knocking and I confirmed it was running rich so I don't suspect the injectors. I also checked the fuel pressure and it was to spec. I am going to do another boost leak test soon. Should I continue to suspect a bad MAF sensor?

Also, is it possible to use a 2G Mass Airflow Sensor with stock ECU and Injectors without using an Air Fuel Controller?

 

[BPU925]

I would try a new maf and see wat happens....u should be able to run that 2g mas with wat u got....2g mas normally leans u out a bit

 

[toybreaker]

Jackal,

Shoot me a pm with your phone number.

I have a known good vr-4 factory maf (and/or a 2g unit) that you can borrow for testing purposes.

John

 

[jackal]

BPU925:
Thanks for the info

toybreaker:
Sending PM

 

[Diego]

where in Colorado are you... if close to Greeley i can bring my 2g Mas for you to check and see if its the problem.

 

[jackal]

Thanks for the offer. I am in North Denver. Not that close to Greeley.