1990 xj engine starts then fights to stay running

1990 xj one morining it started but struggled to stay running then stopped. i went out the next moring it started fine idled fine for a couple min.then went back to stumbling.. i put in a new fuel pump. that did not work acouple weeks ago i put in 3 new injectors and it ran great.:wierd:

Try cleaning your idle air controller and bench clean your throttlebody.

Also check to see if your EGR is sticking.