TPI Hesitation

I have a 1985 TPI (MAF) No codes, starts and idles fine, but car stumbles on acceleration, especially when cold. Hasn't stalled, (yet) and accelerates fine after the hesitation.........Have checked the TPS with a scanner, and it seems to be OK. Any other ideas?

Thanks
GMPowered.

PROM. There was a service bulliten about 15 years ago for this and other problems. If you have the updated PROM, look at TPS (dead spot), IAC & minimum air settings.

My car used to act similar til I cleaned the throttlebody/intake and had the injectors cleaned..