Running weird
Thread Starter
Seasoned Member
Joined: Jul 2010
Posts: 340
Likes: 0
From: Council Bluffs
Year: 1988
Model: Cherokee
Engine: 4.0 260k
Ok we messed with the vaccume lines, everything is how its sapposed to be, so i am beginning to hope and wonder if its the fuel pump. Sometimes when sitting at a stop light at idle it almost dies unless you hit the gas, Then it comes back. So to me it seems like its not getting fuel but then again i dont know much about vaccume stuff so maybe its that too...
Thread Starter
Seasoned Member
Joined: Jul 2010
Posts: 340
Likes: 0
From: Council Bluffs
Year: 1988
Model: Cherokee
Engine: 4.0 260k
Ok so ya now its starting to die going in a straight line... My dads going to try to get a fuel pressure tester and see if we can figure anything out..
Thread Starter
Seasoned Member
Joined: Jul 2010
Posts: 340
Likes: 0
From: Council Bluffs
Year: 1988
Model: Cherokee
Engine: 4.0 260k
We blocked off the vaccume goin to the fuel pressure regulator, and nothing changed. Wouldnt that change something like make it better or worse??
Thread Starter
Seasoned Member
Joined: Jul 2010
Posts: 340
Likes: 0
From: Council Bluffs
Year: 1988
Model: Cherokee
Engine: 4.0 260k
Does anyone have and idea of what it is? this problem is annoying. I doesnt do it once you give it gas it only does it when you let out or sometimes when taking off.
CF Veteran
Joined: Aug 2010
Posts: 2,112
Likes: 4
From: Wantage, NJ
Year: 1995
Model: Cherokee
Engine: 4.0 I6
Hi erveryone
I ve got a cherokee from 1997. 4 liter, 6 cilinder, automatic.
I have this problem when I am driving a while. Suddenly the rpm go down and there is no power anymore. I have to press the gas otherwise the engine shut's down. When I turn the engine off and on again the problem is gone for a while.
So it looks loke it is an electric problem too. Sometime it starts after 20 km and sometimes just after 5 km of driving.
does anybody have a clue??
I ve got a cherokee from 1997. 4 liter, 6 cilinder, automatic.
I have this problem when I am driving a while. Suddenly the rpm go down and there is no power anymore. I have to press the gas otherwise the engine shut's down. When I turn the engine off and on again the problem is gone for a while.
So it looks loke it is an electric problem too. Sometime it starts after 20 km and sometimes just after 5 km of driving.
does anybody have a clue??
Almost positive timing is non adjustable.
Sounds like a MAP sensor problem
Last edited by Diesel; Aug 23, 2010 at 09:09 AM.
Honorary Moderator
Joined: Mar 2010
Posts: 8,135
Likes: 16
From: Gilbert AZ/Las Cruces NM
Year: 1996
Model: Cherokee
Engine: 4.0 upgraded