#1 cylinder......HELP!
CF Veteran
Joined: Mar 2010
Posts: 47,923
Likes: 38
From: Broward County Fl.
Year: 1989 xj sport 2dr
Model: Cherokee
Engine: 12 hole bosch Injectors
ive gone overy ever thing i would of done if your getting signal,spark,and fuel the only thing left is compression check
CF Veteran
Joined: Mar 2010
Posts: 47,923
Likes: 38
From: Broward County Fl.
Year: 1989 xj sport 2dr
Model: Cherokee
Engine: 12 hole bosch Injectors
So I just picked up this Jeep last weekend and on the second day I had it things started going wrong. The wires to the #1 injector were showing and nearly cracked in two. When I touched them to take a closer look they fully broke in two. I stripped them back and twisted them together to make it home. It missed and sputtered all the way home. Once home I soldered the wires back together and taped them up. No change still ran like crap. Got a scanner and popped the p0201 code. Since then have replaced plugs, wires, cap, rotor, #1 injector and CPS. Whats next?? I'm at a loss on what to check/replace next.
Any help would be great. My friends were already looking at me strange when I told them I was buying a Jeep that has 200,000 miles on it already. I told them it was just broke in.
Any help would be great. My friends were already looking at me strange when I told them I was buying a Jeep that has 200,000 miles on it already. I told them it was just broke in.
Thread Starter
Junior Member
Joined: Jul 2009
Posts: 64
Likes: 0
Year: 1996
Model: Cherokee
Engine: 4.0l high output
any possibility the fuel pump is getting weak and not able to push enough fuel through the fuel rail to feed all the injectors enough volume of fuel?
CF Veteran
Joined: Mar 2010
Posts: 47,923
Likes: 38
From: Broward County Fl.
Year: 1989 xj sport 2dr
Model: Cherokee
Engine: 12 hole bosch Injectors
CF Veteran
Joined: Mar 2010
Posts: 47,923
Likes: 38
From: Broward County Fl.
Year: 1989 xj sport 2dr
Model: Cherokee
Engine: 12 hole bosch Injectors
CF Veteran
Joined: Mar 2010
Posts: 47,923
Likes: 38
From: Broward County Fl.
Year: 1989 xj sport 2dr
Model: Cherokee
Engine: 12 hole bosch Injectors
CF Veteran
Joined: Mar 2010
Posts: 47,923
Likes: 38
From: Broward County Fl.
Year: 1989 xj sport 2dr
Model: Cherokee
Engine: 12 hole bosch Injectors
..........read this the big paragraph in the middle explains it pretty goodhttp://www.2carpros.com/articles/how...-fuel-injector
Last edited by freegdr; Apr 30, 2011 at 08:47 PM.
Thread Starter
Junior Member
Joined: Jul 2009
Posts: 64
Likes: 0
Year: 1996
Model: Cherokee
Engine: 4.0l high output
ok, so here it is. it has something to do with the plug/wire for the injector. test light light when touched to the positive part of the plug when unhooked but still wont fire the injector. when #1 and #2 wires are switched then #1 works and #2 dont, so i know both injectors work. i know injectors work because you can hear them ticking when running and hold the end of a screwdriver to your ear while touching the injector with the blade.
Thread Starter
Junior Member
Joined: Jul 2009
Posts: 64
Likes: 0
Year: 1996
Model: Cherokee
Engine: 4.0l high output
Big thanks to you freegdr. Without your help and insight I would still be lost wondering what to do next. After I finally read and completely understood the procedures it was telling me to take it became very clear that the ground trigger was missing on that injector causing it not to work, results being a bad PCM. THANKS!!