sometimes it starts...sometimes it don't
07-28-2014, 12:45 PM
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Model: Cherokee
sometimes it starts...sometimes it don't
1994 zj 5.2
would not start this morning, but does turn over
came home later and it started right up.
battery , alt and starter all checked out ok last week when this problem started.
I have already changed the crankshaft position sensor. will an ignition coil fail to work on and off?
would not start this morning, but does turn over
came home later and it started right up.
battery , alt and starter all checked out ok last week when this problem started.
I have already changed the crankshaft position sensor. will an ignition coil fail to work on and off?
07-28-2014, 04:49 PM
#4
Old fart with a wrench
I don't know this for sure, but I've been told you can rent one from Auto Zone.
07-29-2014, 12:21 PM
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so today I go out to show my neighbor what it is doing when trying to start and here is what happened....
engine started but was running rough. when I pressed the accelerator it bogged down the engine so I turned it off. started it again same thing only this time it back fired when I pressed the accelerator. I started it for the third time and it fired up and ran nice and smooth. what a pain!!
I didn't get a chance to test the fuel pressure yet, I have to wait till Thursday to do that. I will update when I get a chance. since it is a 1994 with only 150k miles on her, I plan on replacing the camshaft position sensor(in the dist.), coil pack and fuel pump when my daughter leaves for college, but that is still 3 weeks away.....
thanks to all you offered advice.
engine started but was running rough. when I pressed the accelerator it bogged down the engine so I turned it off. started it again same thing only this time it back fired when I pressed the accelerator. I started it for the third time and it fired up and ran nice and smooth. what a pain!!
I didn't get a chance to test the fuel pressure yet, I have to wait till Thursday to do that. I will update when I get a chance. since it is a 1994 with only 150k miles on her, I plan on replacing the camshaft position sensor(in the dist.), coil pack and fuel pump when my daughter leaves for college, but that is still 3 weeks away.....
thanks to all you offered advice.
07-31-2014, 04:32 PM
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so I checked the fuel pressure using the steps described in my Hanes manual. fuel pressure was fine. I went ahead and did a tune-up which included cap, rotor, wires, plugs( champion copper OE), ignition coil and dist. pick-up coil. the jeep cranks right up every time but it still had a hesitation or stumbling of the engine on two occasions at start up and would die. the fuel filter was replaced 3 weeks ago and the fuel that came out of the bleed off from the pressure test was clean. I have also cleaned the throttle body when I changed the fuel filter.
im thinking of going ahead and changing the MAP and IAC sensors..anything else??
im thinking of going ahead and changing the MAP and IAC sensors..anything else??
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