Maf Sensor Question
Thread Starter
Instructor
Joined: Apr 2007
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From: Joliet ILLINOIS
Maf Sensor Question
I unplugged my maf and checked inside the car if there were any codes....And there were'nt......Is this right if the maf becomes unplugged should there not be a code thrown??????????????
Le Mans Master
Joined: Jul 2002
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From: Slave to the evil empire
Cruise-In V Veteran
St. Jude Donor '04
If the engine is running and you disconnect the MAF sensor the engine should stumble for a second and then run fairly smooth but the check engine light should come on.
If you unplugged the MAF sensor with the engine not running then nothing will happen.
If you unplugged the MAF sensor with the engine not running then nothing will happen.
Le Mans Master
Joined: Jan 2001
Posts: 5,786
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From: Lafayette Colorado
Unplugging the MAF while the engine on will throw some codes to indicate a MAF failure. The stumbling is the PCM switch from the MAF tables to the VE tables. Disconnecting the MAF is the first step in a SD tune 
Keith
Keith
