looked up a search on this problem but found too many opinions, hopefully you fellas can help.

My 98 runner stalls occasionally with the a/c on mainly.
But with a/c off it does not stall.

My idle with air on is 600rpm.

Today while letting off my gas pedal at 25mph for 3 seconds it stalled but then quickly restarted.

Then while sitting idle in drive mode for 10minutes to pick up my daughter at school it stalled. This story has occured 3 times at her school.

My fuel filter was changed 9months ago, along with new timing belt and plugs at the dealer before purchase. I cleaned throttle body with "o" gasket mod. 3 months ago.

I'm wondering if the oil from amsoil filter is getting on maf sensor?

I'm mechanically inclined so i hope to fix myself.

 

Could be your MAF or O2 sensor, it may be running it too rich to the point where it stalls.

Do you get a CEL?

 

There is no check engine light.

How do you replace the 02 sensor? Do i get oem or auto store?

 

I have had problems with O2 sensors that I get at autostores, the wires are either too short or too long. And some are universal, where you splice the connector to it.

To replace an O2 sensor you get a O2 socket (pretty cheap) and a ratchet and screw it off. Its pretty easy to do. But they are expensive.