My 1990 max is acting real strange and no one seems to be able to find the problem.It will run perfect for maybe 10 miles and you can slow down and it will act like running out of gas or timing is off.I can shut off the car and restart and it will run fine for awhile and start all over again.I have done this while going down the road and it will restart and run fine.The car never dies and will idle fine.I ohmed out the MAF and checks out.

 

since you checked the MAF, also check the resistance on your injectors, resistance should be between 10-14