Click your heels 3 times like Dorothy (maf)

[3_97_Sports]

Whatever happened with this? Was it true? Did it really make a difference?
Why can't I find anything about it online?
Longtime members from the old site would remember this.
It was said that you were to put your foot to the floor 3 times, like dorothy clicked her heels, in order to calibrate your maf, or learn your ecm. Something like that.

 

[XR7-4.6]

Yep, same as what you have to do when you jump the POL_PKG connector when removing the speed limiter

 

[1997ThunderbirdLXV6]

Wasn't that the procedure to recalibrate the throttle on cars with drive-by-wire throttle control? Our cars use a physical cable, so I don't see what this procedure would accomplish (?).

 

[3_97_Sports]

So it was made up just to fuck with noobs?
I remember reading that back in 2006ish.

 

[3_97_Sports]

Apparently it is real.
Found that on f150.net
I searched for baropid after I saw jmiller was telling someone about it on the old site.

 

[theterminator93]

Hm, seems to apply to barometric pressure (speed/density) systems.

 

[1997ThunderbirdLXV6]

Apparently it is real.
Found that on f150.net
I searched for baropid after I saw jmiller was telling someone about it on the old site.

I see. Disregard my post; I thought you were referring to something different and unrelated:

On drive-by-wire throttle equipped cars, there's a procedure where your floor the throttle pedal with ignition on/engine off, which recalibrates the electronic throttle control.

 

[1997ThunderbirdLXV6]

Greater than half-throttle? I mean that's pretty much any traffic light turning green for me... I think I'm fully calibrated

 

[dDUBb]

This procedure will reset the Oil change reminder on my Chevy. Does absolutely nothing on a Tbird.

 

[3_97_Sports]

Tsb says that our Thunderbirds are included in this. I am 1200 feet above sea level. When the settings in the KAM get erased from dead battery or something else, I wonder what the stock elevation is in the pcm.
The way they describe it, it is a longer push than just click three times, it is 3 or 4 heavy sustained accelerations.

 

[Grog6]

Our cars do not have a baro sensor, It's calculated in the eec from the running engine, using the maf,o2's,and inlet temp.sensor.

 

[XR7-4.6]

Here’s the thing, that TSB is a procedural instruction on diagnosing MAF contamination, not a normal service to perform on a perfectly good car.

The TL;DR of it is if the service technician suspects a dirty MAF they can reality check actual barometric pressure in the area against the barometric pressure calculations in the datalogs, and if they’re off they now can confirm if the MAF is off.

For you as a driver this is all done automatically when the MAF is clean and the O2 sensors are good. That’s why there isn’t much information on it out there, since it’s not something anyone has to worry about, that and MAF contamination is pretty easily solved by physically cleaning the MAF without having to go through a time consuming procedure like the one outlined in the TSB.

Here is the full TSB

TSB 98-23-10 Mass Air Flow Contamination

 

[Grog6]

Whenever I get a code,I clean the maf first. And clear the code and kam, by pulling fise 15 under the hood and trying to start it.
Then I drive to walmart~15 miles thru town. Drive cycle will complete just before I get there, and set a code if there's a problem still. It's usually the maf.