The Mud Pit > Wrenching
JK heating/sediment whatever problem
Magnum Opus:
So......recently tried my heater......(didn't use it much in Guam). As it turns out I have the infamous JK heater core/sediment/leak stop/mixed coolant disease. I bought a backflush jumper today and some old fashioned green coolant. I intend on back-flushing and chemically cleaning the crap out of my coolant system and putting the green crap in. I kinda figured that some of the JK owners have encountered the same problem. Any words of wisdom? Symptoms are sediment in the coolant system and no heat on the drivers side and some heat on the passengers side. Definitely not spitting lava like it ought to. I am not that interested in taking it to the dealership. I have seen pictures. They strip the dash to the fire wall to replace the heater core, radiator and water pump, and it appears to be a wash rinse and repeat annually. Thoughts? I am also looking into a dc powered hair dryer for defrosting and warmer clothes for my daily commute to work! After hopefully a successful back flush, I intend on swapping the heater hoses so that perhaps the highest performing side will be the drivers side (I don't care if the passenger can see! I also have a problem getting people to ride with me....but that is a personal problem.)
toreadorranger:
friend of mine had this issue, he had the dealer pull the heater core and replace it. It wasn't cheap.
JKJon:
WOW.. I have never heard of this issue. Hope I do not have these issues with mine. Was this a common issue for certain years? Good luck. Keep us updated with your results.
JKSue:
I know there is a star case on the coolant sludge issue, if that's indeed your problem I think Chrysler is covering it all & replacing everything under warranty. I'm not a fan of the dealership myself, but it might benefit you to have it documented & have the heater core, etc., replaced in case you have issues in the future. But I get not wanting them to tear it apart, especially if you have the ability to do it yourself.
I've also heard that they are having issues with the blend door being broken. But if you've seen the sludge/sand I'm guessing you're not so lucky!?
So far I'm lucky, I had to have my coolant & tranny hoses replaced under warranty so they did a flush early on & I haven't had any sludge issues. Yet. She's a bitch tho, I won't be shocked if it happens.
So far (28K miles, 2013) I've had:
water pump replaced under warranty
coolant/tranny lines under warranty
seatbelt under warranty
light sensor under warranty
stress crack in windshield under warranty
heated mirror recall (not done yet, don't use my doors)
it won't shift into drive when in 4L quite frequently - can't diagnose
I've had no brakes 3 times - can't diagnose
misc electronic freak outs, not downshifting etc - all undiagnosable
Those are the kind of reasons I bring it to the dealer. It's such a piece of crap, I want it documented cuz one day she is gonna kill me & I want my family to be able to sue. ;)
Magnum Opus:
So far I have not had as many issues as JKSue! Man that sucks! I called SECOR...they never heard of the problem and I am just beyond the 3 year spot on the warranty (bummer). I have a case number with Corporate and an appointment with Favely on Monday. In the interim.....I am about to disconnect the heater lines and connect some garden hose "spool pieces" once the engine cools down. Then I am gonna do backwards and forward flushes a couple of times and let it soak for a bout 20 mins with a 50% CLR solution then flush the crap out of it again. I expect I will be dehydrating meat on my vents before the evening is out and cancelling my apt at the stealership tomorrow! Wish me luck! I am gonna check this sight before I shoot the CLR cocktail just incase someone thinks I am touched with insanity! In the long haul I am installing a flush and fill tee and am going to do annual flushes and fills on both my 12 and 15 rigs.....I recommend to all the JK guys and gals to do the same!
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