# MAFS

**URL:** <https://forums.speedlife.net/t/mafs/81968>\
**Category:** SON240sx Automotive\
**Created:** [November 9, 2004, 7:49pm UTC](https://forums.speedlife.net/t/mafs/81968 "2004-11-09T19:49:14Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![s13newbie](https://avatars.discourse-cdn.com/v4/letter/s/77aa72/32.png) [@s13newbie](https://forums.speedlife.net/u/s13newbie)\
**Post date:** [November 9, 2004, 7:49pm UTC](https://forums.speedlife.net/t/mafs/81968/1 "2004-11-09T19:49:14Z")

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what is the MAFS? and where is it located?

i’m trying to narrow down possibilities on why my 90 s13 wont start

i read a few posts and i noticed that the MAFS maybe an issue

i know i’m posting alot and may be a pain in the ass, but i am a s13 newbie and finished a bunch of work on my newly acquired s13 and would like to finally put her on the road! Thanks!!

s13newbie

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**Author:** ![DarkForceJackal](https://avatars.discourse-cdn.com/v4/letter/d/b38774/32.png) [@DarkForceJackal](https://forums.speedlife.net/u/DarkForceJackal)\
**Post date:** [November 9, 2004, 8:34pm UTC](https://forums.speedlife.net/t/mafs/81968/2 "2004-11-09T20:34:16Z")

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Ok, the MAFS is your Mass Air Flow Sensor.

It is located along your intake tract. It is the mechanism (silver) that is just before the airbox (and bolts to it). There is one electrical connector/wire leaving the MAFS, make sure this connector is clean & tight.

Be very careful with your MAFS, but carefully inspect it’s condition & cleanliness inside (is it gunked up, oil-covered?).

Good luck with your car man. 😉

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**Author:** ![SHIFT\_KA24DET](https://avatars.discourse-cdn.com/v4/letter/s/b9bd4f/32.png) [@SHIFT\_KA24DET](https://forums.speedlife.net/u/SHIFT_KA24DET)\
**Post date:** [November 9, 2004, 10:13pm UTC](https://forums.speedlife.net/t/mafs/81968/3 "2004-11-09T22:13:22Z")

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Your car will start and run without a MAFS…

Won’t Run well at all but will at least start and idel.

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**Author:** ![s13newbie](https://avatars.discourse-cdn.com/v4/letter/s/77aa72/32.png) [@s13newbie](https://forums.speedlife.net/u/s13newbie)\
**Post date:** [November 10, 2004, 5:15am UTC](https://forums.speedlife.net/t/mafs/81968/4 "2004-11-10T05:15:47Z")

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thanks for the help guys

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**Author:** ![s14\_2Nv](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/s14_2nv/32/5476_2.png) [@s14\_2Nv](https://forums.speedlife.net/u/s14_2Nv)\
**Post date:** [November 10, 2004, 7:14am UTC](https://forums.speedlife.net/t/mafs/81968/5 "2004-11-10T07:14:23Z")

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Might not idle well either, but it should start.

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**Author:** ![mr200](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/mr200/32/5495_2.png) [@mr200](https://forums.speedlife.net/u/mr200)\
**Post date:** [November 10, 2004, 9:28am UTC](https://forums.speedlife.net/t/mafs/81968/6 "2004-11-10T09:28:45Z")

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just unplug the MAF when you find it and try to start the car. If it starts, new MAF time.