92 idle problem

We have been trying to fix our sons car for a few days now, we hooked it up to computer and got codes for the MAF sensor and teh quad driver modulator, we replaced both because we had them tested and they were bad, it is running now but the idle is off. When its parked and idiling it will suddenly just die, it will restart right away. it is a 3.3L v6. also does any one have the firing order for this car?
thanks

Firing order is 1-6-5-4-3-2

Firing order is 1-6-5-4-3-2


thank you