Engine Problems
12-17-2010, 09:43 PM
#1
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Model: Cherokee
Engine Problems
I have a 2001 jeep cherokee with 107,000 miles. About 3 months ago I got a tune up and a coolant flush. My check engine light came on about a month ago and brought it into the shop. These are the codes the computer came up with:
-PO300: Random/multiple cylinder misfire
-PO301: Cylinder 1 misfire
-PO304: Cylinder 4 misfire
-PO306: Cylinder 6 misfire
Before I got the coolant flushed I don't think the previous owner never did one. So when we changed the coolant 3 months ago it came out light brown like a rusty color, and smelt horrible. We filled it up to the "FULL" line in that box. Now its right at the "ADD" line and its back to a brownish color. There's a little bit of liquid coming out of the exhaust but not that much, only some drops. Also if I start go for a 10 min drive and come back, put the car in park, and leave it at idle, there is a very little ticking sound but its not that loud. I don't know if everything relates to one thing but could someone help me out? Thanks!
-PO300: Random/multiple cylinder misfire
-PO301: Cylinder 1 misfire
-PO304: Cylinder 4 misfire
-PO306: Cylinder 6 misfire
Before I got the coolant flushed I don't think the previous owner never did one. So when we changed the coolant 3 months ago it came out light brown like a rusty color, and smelt horrible. We filled it up to the "FULL" line in that box. Now its right at the "ADD" line and its back to a brownish color. There's a little bit of liquid coming out of the exhaust but not that much, only some drops. Also if I start go for a 10 min drive and come back, put the car in park, and leave it at idle, there is a very little ticking sound but its not that loud. I don't know if everything relates to one thing but could someone help me out? Thanks!
Last edited by BSS; 12-18-2010 at 10:28 AM.
12-17-2010, 09:58 PM
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12-17-2010, 10:04 PM
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12-17-2010, 10:14 PM
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Year: 1996
Model: Cherokee (XJ)
Engine: 4.0L
Well hold on it might not be a cracked head. Liquid in the exhaust is normal, water is one of the byproducts of combustion. As well, the cast has an imperfection inbetween cylinders 3 and 4 not around 6 and 1 so my suggestion is to try other things before just assuming its a cracked head. Besides, bad heads don't just happn ***** nilly!
Did your Jeep overheat recently?
Did your Jeep overheat recently?
12-17-2010, 10:27 PM
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Well hold on it might not be a cracked head. Liquid in the exhaust is normal, water is one of the byproducts of combustion. As well, the cast has an imperfection inbetween cylinders 3 and 4 not around 6 and 1 so my suggestion is to try other things before just assuming its a cracked head. Besides, bad heads don't just happn ***** nilly!
Did your Jeep overheat recently?
Did your Jeep overheat recently?
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12-17-2010, 10:36 PM
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Year: 1996
Model: Cherokee (XJ)
Engine: 4.0L
K well all the misfiring could be because of a distributor, rotor, wires, ignition coil wire to dizzy wire, ignition coil. ticking noise could be a bad rotor. Just try changing the dist and rotor, maybe if your feeling up to it the wires and ignition coil wire too. they're available pretty much EVERYWHERE and cost is cheap, easy to install etc.
I personally don't think it's a bad head, my coolant level very slowly gets a little bit lower every month, and it only gets to the add line after maybe 10 or 12 months of not filling it.
Anyway, food for thought, if anyone disagrees with me than it's just progress
Ticking noise could be dizzy/rotor
I personally don't think it's a bad head, my coolant level very slowly gets a little bit lower every month, and it only gets to the add line after maybe 10 or 12 months of not filling it.
Anyway, food for thought, if anyone disagrees with me than it's just progress
Ticking noise could be dizzy/rotor
12-17-2010, 11:15 PM
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Year: 1997
Model: Cherokee
Engine: 4.0
K well all the misfiring could be because of a distributor, rotor, wires, ignition coil wire to dizzy wire, ignition coil. ticking noise could be a bad rotor. Just try changing the dist and rotor, maybe if your feeling up to it the wires and ignition coil wire too. they're available pretty much EVERYWHERE and cost is cheap, easy to install etc.
I personally don't think it's a bad head, my coolant level very slowly gets a little bit lower every month, and it only gets to the add line after maybe 10 or 12 months of not filling it.
Anyway, food for thought, if anyone disagrees with me than it's just progress
Ticking noise could be dizzy/rotor
I personally don't think it's a bad head, my coolant level very slowly gets a little bit lower every month, and it only gets to the add line after maybe 10 or 12 months of not filling it.
Anyway, food for thought, if anyone disagrees with me than it's just progress
Ticking noise could be dizzy/rotor
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