Q: Where is the Mass AirFlow (MAF) sensor located on this car? 2005 Saturn L300

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After driving on hwy for 10-15 mins car starts to lose power. At stop idle goes up & down & shifts weird. Someone told me MAF sensor but check engine lite is not on.. Thx

My car has 114500 miles.
My car has an automatic transmission.

Hello - the mass airflow (MAF) sensor is the black plastic cylindrical tube with an electrical harness that goes into the air filter housing on your engine air intake system. I would check for problem codes first however, as the behavior you describe could well be the throttle position switch, or idle air control valve - rather than the MAF. I would recommend an engine inspection by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, diagnose this problem, give you an accurate assessment of damage and cost estimate for repairs.

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