Common Symptoms
- Check Engine Light illuminated
- Rough or unstable idle
- Hesitation or stumbling during acceleration
- Poor fuel economy
- Black smoke from exhaust under load
- Engine may stall at idle or low speeds
Most Likely Root Causes
- Dirty or contaminated MAF sensor element
- Vacuum leak in intake system
- Air filter clogged or improperly seated
- Cracked or disconnected intake air duct
- Faulty or failing MAF sensor
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Component Location
MAF sensor is located in the intake air duct between the air filter housing and the throttle body.
Manufacturer Notes
Some manufacturers recommend cleaning MAF sensors with approved cleaner before replacement, while others advise replacement only.
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