Problem accelerating immediately after start

I have a 99 Chevy Blazer that acts like it is going to stall when I try to accelerate after starting it. This goes on for close to a minute then it runs fine. I can rev it up in neutral immediately after starting and it works fine. I have changed the two O2 sensors and the fuel filter. My next guess is the spark plugs. It is strange how it only occurs in drive for the first minute or so. Please Help!

I have a 99 Chevy Blazer that acts like it is going to stall when I try to accelerate after starting it. This goes on for close to a minute then it runs fine. I can rev it up in neutral immediately after starting and it works fine. I have changed the two O2 sensors and the fuel filter. My next guess is the spark plugs. It is strange how it only occurs in drive for the first minute or so. Please Help!

MOST PLACES I'VE BEEN TO TELL ME TO START MY CAR AND LET IT IDLE (NO GAS PEDAL REVVING) FOR AROUND 90 SEC. , THEN LIGHTLY TAP THE GAS PEDAL (SET THE CHOKE). REVVING IT IN NEUTRAL DOESN'T REALLY DO ANYTHING, (OTHER THAN FLOOD THE ENGINE WITH GAS).

Scan it and look at intake temp and coolant temp readings cold, make sure they match the air temp at the time.