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...
Senior Member
I would first try putting a new fuel filter in, it's cheap and it could be all that's wrong...
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..
We blocked off the vaccume goin to the fuel pressure regulator, and nothing changed. Wouldnt that change something like make it better or worse??
Well now it seems like it might be having low oil pressure.. Hopefully its not gettin ready to die.
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.
Wel drove it to school today and it doesnt seem to be doing this. Could it be the coil?
CF Veteran
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Fuel filter is in the tank, non serviceable.Originally Posted by Ender
I would first try putting a new fuel filter in, it's cheap and it could be all that's wrong...
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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??
No, it sounds like your Crank Position Sensor. You might also want to have it checked out for spark or fuel delivery problems.Originally Posted by Bas
Hi erveryoneI 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??
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Almost positive timing is non adjustable.Originally Posted by XJDC
i would put my money on timing... if i had any.
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Sounds like a MAP sensor problemOriginally Posted by 88 Chief
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.
Honorary Moderator
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your map sensor controls the air/fuel ratio. it works in conjunction with your TPS and a vacuum hose on the intake manifold.Originally Posted by 88 Chief
Map sensor? whats that? if you dont mind explaining?
Thanks for explainin. What would happen if i unpluged this? to see if this is the problem. Would it hurt anything?
CF Veteran
It really depends, it could stall, or it might make it just run obnoxiously lean, smoke and run really really rough.