# MAF Sensor

**URL:** <https://community.cartalk.com/t/maf-sensor/58917>\
**Category:** Maintenance/Repairs\
**Tags:** safari, gmc\
**Created:** [December 19, 2010, 8:12pm UTC](https://community.cartalk.com/t/maf-sensor/58917 "2010-12-19T20:12:12Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![tcnhking](https://avatars.discourse-cdn.com/v4/letter/t/2bfe46/32.png) [@tcnhking](https://community.cartalk.com/u/tcnhking)\
**Post date:** [December 19, 2010, 8:12pm UTC](https://community.cartalk.com/t/maf-sensor/58917/1 "2010-12-19T20:12:12Z")

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I have a 2002 GMC Safari Van that occasionally will miss and/or idle rough. Check engine light comes on when pulling a long hill. A friend with a code reader pulled up MAF Sensor. Would a bad MAF cause these problems or does it sound like something else?

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**Author:** ![Tester](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/tester/32/15976_2.png) [@Tester](https://community.cartalk.com/u/Tester)\
**Post date:** [December 19, 2010, 8:16pm UTC](https://community.cartalk.com/t/maf-sensor/58917/2 "2010-12-19T20:16:47Z")

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Yes. A faulty/dirty MAF sensor can cause the symtoms you describe. Obtain an aerosol can of MAF sensor cleaner and try cleaning the MAF sensor.

Tester

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**Author:** ![tcnhking](https://avatars.discourse-cdn.com/v4/letter/t/2bfe46/32.png) [@tcnhking](https://community.cartalk.com/u/tcnhking)\
**Post date:** [December 19, 2010, 11:53pm UTC](https://community.cartalk.com/t/maf-sensor/58917/3 "2010-12-19T23:53:50Z")

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Thanks, I’ll do that tomorrow. Wouldn’t it be great if that cured it!