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Does disconnecting the MAF without disconnecting the battery make AC stop working?

Clint Beastwood

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#1
Preface: I am an ocd level note taker when doing things.

Every time I work on a car I make a project plan outline, then the granular steps to reach milestones, then I work against the checklist.
In doing this, I can always mine data later to find correlations, optimizations, etc. I know it’s overkill, but it’s how I work. After I am done I dump my data into a database so I can look things up if I need to. I changed my trans fluid today, and during my test drive my ac doesn’t work. This has happened before...

So... I checked my database and there’s a 100% correlation between disconnecting the MAF sensor with the battery still connected, and the AC not working for a while afterwords. Correlation does not necessarily equal causation, for sure, but I was wondering if anyone else has noticed a similar correlation.

Thoughts?
 


Ford ST

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#2
When I installed my ST200 airbox I obviously had to disconnect the MAF sensor, I did not disconnect the battery.
I did not notice any issues. Very interesting.

Sent from my LG-LS997 using Tapatalk
 


OP
Clint Beastwood

Clint Beastwood

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Thread Starter #3
Ha! Verified it 5 times in a row now. If I disconnect the battery before unplugging the Maf, ac works fine. If I reset ecu learning on my AP after unplugging the Maf, ac works fine.
 


PunkST

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#4
So maybe thats why my Auto climate control loves running at full bore when i press the AC button
 


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#5
I disconnected my MAF and BOOM! No A/C! But I disconnected the Positive cable on the battery and put it back on and it recycled thru heat and cool and stayed cold or normal.
 




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