90 B2600i stalls when engine is warm and it decelerates at a stop sign

I have a 90 B2600i 4x4 fi. When it is warm and I roll to a stop sign it almost stalls and then catches itself. I replaced the ECM a year ago. I just replacced the following; IAC,cap, rotor, wires, plugs. I tried a different MAF sensor, TBS, from my nephews running b2600i wikth no luck. The fuel filter is less than 2 years old.

What other suggests are out there? Would an O2 sensor cause it to stall?

thanks