Part 4: 1990-1993 with crazy idle. “MAF” replacement.

Mass Air Flow Meter replacement.
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Due to factors beyond the control of MiataMan, I cannot guarantee against improper use or unauthorized modifications of this information. MiataMan assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. Use this information at your own risk. MiataMan recommends safe practices when working on vehicles and or with tools seen or implied in this video. Due to factors beyond the control of MiataMan, no information contained in this video shall create any expressed or implied warranty or guarantee of any particular result. Any injury, damage, or loss that may result from improper use of these tools, equipment, or from the information contained in this video is the sole responsibility of the user and not MiataMan.

[@94mowner38]

Miataman, I enjoy your videos but when during episode 2 you unplugged the iac and the idle smoothed out it was obvious the iac was working and the ecu was trying to compensate for some anomalous input. I would have looked at ecu inputs and not started changing parts so fast. A good learning experience for us all and thanks for the videos.

[@roelandzw1846]

My maf sensor simply broke. In search of the high idle i replaced the green temperature sensor, the Pcv valve including gasget, cas-O-ring. Cleaned the throttle body. In the end it was the airvalve at the air intake. Good fun to search and find solutions😉💪

[@WiSeNhEiMeR-1369]

HOWdy M-M,
Thanks for continuing
COOP
...

[@natehallowell9260]

Maybe water/coolant getting into intake manifold my Miata did that weird rev thing when I got caught in heavy heavy rain

[@pawpatina]

not a MAF, its an AFM

[@ezrawalter6520]

On my 94 I've had really bad problems where the car will basically just cut off when I try to turn it on. My mechanic told me that the solution is to replace my engine wiring harnesses so I'm hoping that will work. The car will run with the MAF unplugged but if it's in then it just dies

[@MiataMan]

Have you swapped in a different crank angle sensor yet?

[@ezrawalter6520]

@@MiataMan I have not, I'll try that before the wiring harness. That's a scary project for me

[@ohyeahyeah1793]

@@ezrawalter6520 did this work in the end?

[@Fe4rLe5sxSk1LLz]

I'm having almost the same issue! Did your solution work? My miata stalls out on a cold engine and I have to baby the throttle until the temperature gauge starts to rise up past the "C" and when the engine is warm and normal operating temperature. The car drives normal