# 04 Pontiac Bonneville mass airflow sensor

**URL:** <https://community.cartalk.com/t/04-pontiac-bonneville-mass-airflow-sensor/92970>\
**Category:** Maintenance/Repairs\
**Created:** [April 8, 2016, 2:01am UTC](https://community.cartalk.com/t/04-pontiac-bonneville-mass-airflow-sensor/92970 "2016-04-08T02:01:13Z")\
**Posts on this page:** 7\
**Page:** 1

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**Author:** ![alaskastar](https://avatars.discourse-cdn.com/v4/letter/a/f4b2a3/32.png) [@alaskastar](https://community.cartalk.com/u/alaskastar)\
**Post date:** [April 8, 2016, 2:01am UTC](https://community.cartalk.com/t/04-pontiac-bonneville-mass-airflow-sensor/92970/1 "2016-04-08T02:01:13Z")

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Hi, I’m wondering where the mass airflow sensor is located on a 2004 Pontiac Bonneville?

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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:** [April 8, 2016, 2:05am UTC](https://community.cartalk.com/t/04-pontiac-bonneville-mass-airflow-sensor/92970/2 "2016-04-08T02:05:33Z")

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It’s mounted on top of the throttle body.

Tester

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**Author:** ![alaskastar](https://avatars.discourse-cdn.com/v4/letter/a/f4b2a3/32.png) [@alaskastar](https://community.cartalk.com/u/alaskastar)\
**Post date:** [April 8, 2016, 3:55am UTC](https://community.cartalk.com/t/04-pontiac-bonneville-mass-airflow-sensor/92970/3 "2016-04-08T03:55:25Z")

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thank you, do you know how to tell if it’s working properly? my car isn’t starting and I’m running out of problems it could be

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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:** [April 8, 2016, 3:57am UTC](https://community.cartalk.com/t/04-pontiac-bonneville-mass-airflow-sensor/92970/4 "2016-04-08T03:57:47Z")

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Has the Check Engine light been on before the no-start condition?

Tester

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<div class="post-metadata">

**Author:** ![alaskastar](https://avatars.discourse-cdn.com/v4/letter/a/f4b2a3/32.png) [@alaskastar](https://community.cartalk.com/u/alaskastar)\
**Post date:** [April 8, 2016, 4:03am UTC](https://community.cartalk.com/t/04-pontiac-bonneville-mass-airflow-sensor/92970/5 "2016-04-08T04:03:49Z")

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yeah

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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:** [April 8, 2016, 4:09am UTC](https://community.cartalk.com/t/04-pontiac-bonneville-mass-airflow-sensor/92970/6 "2016-04-08T04:09:34Z")

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Then that’s where you have to start.

You need to have someone hook a scanner up to the vehicle to determine if there are any codes that may be related as to why the engine won’t start.

Other than that, it’s anyone’s guess.

Tester

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**Author:** ![pete\_peters](https://avatars.discourse-cdn.com/v4/letter/p/46a35a/32.png) [@pete\_peters](https://community.cartalk.com/u/pete_peters)\
**Post date:** [April 9, 2016, 1:24am UTC](https://community.cartalk.com/t/04-pontiac-bonneville-mass-airflow-sensor/92970/7 "2016-04-09T01:24:36Z")

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If your car isn’t starting and you suspect a bad MAF, unplug it. That will tell if the MAF is stopping it from starting. I would bet by the vintage, it’s a bad fuel pump.