93 240 hesitates on acceleration

[240Dad]

My daughter's 93 240 and I are in the third year of our on-again, off-again relationship.I think it is the fuel system that is causing the most recent problem.
I have replaced the MAF, fuel filter, and fuel injectors. The fuel injectors are the most recent and I replaced them because the Check Engine light came on and I got the following codes:
113 fuel injectors
121 MAF
231 lambda oxygen sensor
I only corrected the first code because, after correcting, the check engine light has remained off.
My daughter says that she is worried when she tries to pull out in traffic because the car won't accelerate and merge well.
Any suggestions on what to check?
Thanks,
Bill

[jamesstar9]

I would try checking for a vacuum leak. Check all the hoses and the rubber elbows. The elbows tend to get mushy and leak, or will break off.