How do I get the stumble just above idle to stop ?

[miata_B_racing]

Seems as if when the M is cold it does not do this but after warm up it has a tendency to want to stumble a bit when leaving a light or stop sign. when above say 1500 rpm
it seems fine.

I would think it would be a bit lean, Is this correct? Can I adjust it at the mixture
on the intake plenum ?

My cat con gaskets need replaced too, would a leak here cause this ?

miata_B_racing

[offsprg01]

i just had this same problem and a new afm fixed the issue. took about 10 minutes to swap out the old one.

[miata_B_racing]

Are you referring to the Mass airflow sensor in the intake tract.?

[jeepinbanditrider]

What year models are we talking about here? The Air Flow Meter and the Mass Airflow Sensor are two different things.

[miata_B_racing]

AFM on a 91 mx 5

[offsprg01]

91 miata with the afm. mine was doing the exact same thing. put in a new afm and the problem went away.

[miata_B_racing]

I know and i purchased another one to see any results, thanks

miata_B_racing

[miata_B_racing]

Update purchased used AFM from a vendor and it was installed tonight. Stumble seems to have vanished as was stated in earlier
post as the culprit. I also installed a new cat convertor. All is much much better now....

thanks for the help...

miata_B_racing