95 running problems

95zjgc

Member
Joined
Apr 27, 2009
Location
archdale
like it says i have a 95 zj 4"lift 31s 4.0L idk wtf is going on i went to the store and back yesterday all was good got home and had to run to the doctors went out to crank the jeep it started fine right idle but it chugged its self out running super rough and would not fire back for probably 10mins it would turn over try to fire but no go so i pulled the plugs to see what they looked like they where a light brown so i checked the fuel pressure but all i had was a psi gauge and it read 25psi so im guessing i have low fuel pressure it will run now and i can drive it but around 2500 3000rpms its back fires and spits and sputters and then shifts and feels like i lost 75% power and it will slowly start to kick in im not sure whats happening i pulled codes all that came up was a 12 any ideas or things to try or if i did not state something clear i can explain more....also when im coming to a stop or complete stop the rpms jump down to about 250rpms or so and trys to cut off and then taking off its really rough take off sputtering the whole time i can push it to the floor and it will jump up rpms and run fine til it shifts again it seems

thanks for reading and hopefully someone knows whats going on
 
Recently fill up with gas??? bad gas
Leave Jeep empty for awhile and got water in the tank??? run a bottle of Heet or something like that through it.
 
tps?
 
can i ask what the tsb is for the fuelpump and it was only hard to start that once i can go over there turn it over and 2 3 sec it fires
 
also replaced the tps today no go but while at o'rileys i grabbed a fuel filter and some seafoam I'm going out there to do those things and check the o2 sensor now will post update asap
 
Try going to the pcm on the firewall and wiggle the plug closest to the pass side fender while running see if it gets better or worse or no change. Those connectors are horrible had a friend who put a zip tie on his to hold pressure on the connector to get a good contact made it run like a champ for 3 weeks with no problem now. The crank sensors are bad to go out also. Hope this helps.
 
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