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#16 Earl OFFLINE  

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Posted May 05, 2013 - 02:58 PM

Welcome to the world of the Junk, err, I mean, Jeep Libertys.

 

 

I never realized they had those kinds of problems.  I'm only familiar with the 4.0L engine, the architecture of which was developed in the 60's by AMC, of which I am also a fan.  We considered the Liberty when we bought our Grand, but went with the Grand because it had the NP242 t-case and 4.0L inline 6.  I would gladly own another 4.0L powered Jeep, we've had two and had great service out of both the entire time we had them, except an intermittent misfire on the one in the Grand.  



#17 JDBrian OFFLINE  

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Posted May 05, 2013 - 03:59 PM

I don't have much to add except that if this engine has variable valve timing it is remotely possible that an electrical glitch could cause a valve to malfunction and stay open when it should be closed. The real clue would be to know what actually is sensed to produce the coil pack error. 

 

 I guess I have my answer. No HV to the plug because the spark plug was shorted out. I can see how that would produce a coil pack error. 



#18 Buck OFFLINE  

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Posted May 05, 2013 - 09:04 PM

Don't really know whats up with your motor but Jeeps have some really weird electrical things happen at times. I have a 06 GC that has some dash light flickering, heater lights on dash are no more. I just did the head gaskets ($2,000). I bought it with 79,000 miles on it and wanted the 4.7 because I got 260,000+ miles out of my 03 Ram with the same motor. It runs good now and plenty of power but people tell me all the time about electrical stuff with Jeeps. Good luck with yours.
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#19 TAHOE OFFLINE  

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Posted May 06, 2013 - 08:54 AM

I never realized they had those kinds of problems.  I'm only familiar with the 4.0L engine, the architecture of which was developed in the 60's by AMC, of which I am also a fan.  We considered the Liberty when we bought our Grand, but went with the Grand because it had the NP242 t-case and 4.0L inline 6.  I would gladly own another 4.0L powered Jeep, we've had two and had great service out of both the entire time we had them, except an intermittent misfire on the one in the Grand.  

 

We have an '05 Liberty.  Besides the engines problems I described, I also get an intermittent stalling issue, hammer gas a few times and goes away for maybe 6 months, I dunno. At 70K I replaced all 4 shocks, ok, I can live with that, but also all 4 coil springs cause they wore worn out and saggin, oil pressure sending unit, plugs, front lower control arm strut bushings, rear lower control arms, a window regulator in 1 door..... on the 3rd one, the rear door upper glass sometimes won't open due to safety switch working when it wants, radio locked up had to be replaced, seat get big white stains if you look at them wrong, even just water leaves stains, cannot use home carpet cleaner, they will look worse. I could go on, I put the fit/finish quality of the Libertys right there with the '85 Escort my wife owned before we got married.

I know guys who love them, lift them, off road them hard and have 200K without hardly a problem, then others just are total crap piles. Seems the '02's were one of the better ones even thoguh they were first year model, they used a different tranny and transfer case than in ours. In '05 I think Chrysler changed valve design in the heads which leads to more dropped valve seats, but I know at least a couple people who've replaced heads in their '02's due to dropped seats, but we are talking over 150K by then.

Also, the deisels are starting to show issues at around 80-100K with timing belts, broken pistons, bad turbos, etc. Unless some mods are made to reduce oil buildup, better filtering, etc, seems they are prone to problems also.


Edited by TAHOE, May 06, 2013 - 09:02 AM.


#20 HDWildBill ONLINE  

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Posted May 07, 2013 - 07:20 PM

UPDATE:  Daniel wins this one.  Got the head off and a stuck valve meet head on with the piston and busted a hole in the top of the piston.  Right now we are going around with the insurance company on how much they are going to pay for the new engine.  Well I learned something with all this.  


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#21 olcowhand ONLINE  

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Posted May 07, 2013 - 07:42 PM

:dancingbanana:  :dancingbanana:  :dancingbanana:  :dancingbanana:   Do I get the broken valve & piston??   :smilewink:


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#22 Earl OFFLINE  

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Posted May 08, 2013 - 07:34 AM

I've never heard of insurance paying formechanical failure before. Warranty maybe, but not insurance. Hows that work?

#23 WNYTractorTinkerer ONLINE  

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Posted May 08, 2013 - 08:26 AM

I've never heard of insurance paying formechanical failure before. Warranty maybe, but not insurance. Hows that work?

Service agreements are insurance policies sold by independent companies anymore..  So you have to deal with those folks to get reimbursed..  Meanwhile you wait & wait & wait... :wallbanging:  



#24 cumminsmannow OFFLINE  

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Posted May 08, 2013 - 09:14 AM

We had nothing but problems and recalls on our first 04 liberty with the v6 gas motor. I finally got sick of it and got a diesel liberty an loved it. Should have never got rid of it.

#25 TAHOE OFFLINE  

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Posted May 08, 2013 - 09:53 AM

Glad you find the problem, hate to hear it's that extensive

 

 

 

We had nothing but problems and recalls on our first 04 liberty with the v6 gas motor. I finally got sick of it and got a diesel liberty an loved it. Should have never got rid of it.

 

Just make sure you keep the filter updated, do the EGR bypasses, etc. Those thing must be maintained to the letter or major problems can occur. I've heard tons of issues with those diesels Hope you got good luck out of yours.


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#26 cumminsmannow OFFLINE  

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Posted May 08, 2013 - 07:28 PM

Glad you find the problem, hate to hear it's that extensive





We had nothing but problems and recalls on our first 04 liberty with the v6 gas motor. I finally got sick of it and got a diesel liberty an loved it. Should have never got rid of it.


Just make sure you keep the filter updated, do the EGR bypasses, etc. Those thing must be maintained to the letter or major problems can occur. I've heard tons of issues with those diesels Hope you got good luck out of yours.

Yes we had great luck with it. After the first filter head started leaking air into the system i put a fass pump on it and turned off the egr. Great vehicle. Pulled like a dream especially a 2 place enclosed snowmobile trailer getting 32 mpg doing it.




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