4720 Air flow restriction light coming on

[orlo]

Hi:

My 2010 4720 Cab, maybe last summer would at high RPM turn on the 'Airflow Restriction' light (Weird light, I had to look it up). I changed my main, and pre-filter and it appeared to be ok. Just recently it started coming back on. Filters are fine (I may try changing them anyway). Has anyone had the airflow restriction sensor (I'm assuming it's a micro vacuum sensor) go bad? I'll look up the part and probably replace it if it's cheap enough, but I figured I'd ask if anyone had experienced a similar issue. FYI, I looked for any sort of restriction, and other than the rubber duck call at the front of the intake all is fine. I even put a bore scope into the intake between the filter and the turbo and all looks fine.

 

[JeepHead]

I would probably take a look at that sensor and see if it's able to be cleaned before I replaced it. It could be similar to like a mass air flow sensor and able to be cleaned.

 

[beenthere]

John Deere Air Filter Restriction Indicator - AL150289

www.greenpartstore.com

 

[Brown Dog]

I’d blow the air filter out with air hose first before replacing.
I use to mow 10hrs a week @ WOT with a 4720 & air filter got Very DIRTY.
It’s like the air filter & radiator for these 66hp little tractors are too small & mine was an open station.

It burnt 19gals of fuel & more when filter was restricted.

I now mow 10hrs a week with a 31hp 4cyl 2600lb Turbo Zero 72” using 8gals a week.