1996 jgc stalling and back fireing

[swichez]

ok guys i have a 1996 jgc with the 4.0 it has started acting up and seems tobe getting worse somtime it will act like it loses fire then will back fire and run fine some days it wont do it some day it will not leave the drive way i need helpcodes read ignition coil,tps, map, i have changed coil, tps, and crank ps help

 

[Bounty__Hunter]

Welcome to the Z. Sounds like it's time to change the MAP sensor.

Also consider a good bench cleaning of the throttle body. Very easy.