2014 Wrangler 3.6 Overheating

[byoung023]

I Have been through 3 thermostats, replaced the water pump, flushed it twice, and im still having an overheating issue, and im at a loss for what to do next any ideas,
Context, all flushes/bleeds done with front end lifted 6+inches, with a coolant funnel.
No heat in the cab now as well, and the temp will fluctuate from 218-245

 

[BLACKJKU]

Are you loosing coolant?

 

[byoung023]

Are you loosing coolant?

No coolant loss at all which is weird but nothin

 

[tJKrider]

Did this start with an overheating issue or was that a result of a water pump (or other part) change? I would do a combustion leak test on the coolant if you haven't already.

 

[byoung023]

Problem started a while back at first the thermostat went, had that happen 3 times after the second i did a combustion leak test showed nothing…. Replaced the thermostat again, fixed the problem for about 4 months then recently it had a bog overheating episode had the car towed home, gonna run another leak test friday, as well as replacing coils and plugs due to the overheat, i got a misfire.

 

[Pepperbelly]

Are you absolutely certain all the air has been burped out?
I had an overheating problem right after I bought my JKU used from a dealer that only stopped when I burped it. Fortunately my driveway is sloped.

 

[byoung023]

Are you absolutely certain all the air has been burped out?
I had an overheating problem right after I bought my JKU used from a dealer that only stopped when I burped it. Fortunately my driveway is sloped.

Ill be doing it again tonight if i can find time

 

[Threepointsix]

Wonder if this was resolved?

Ignorant as this sounds, something like this is whats keeping me from flushing my JK. But it's overdue by 2 years but its only at 73k miles. Still, it needs the fluid changed.

 

[byoung023]

Wonder if this was resolved?

Ignorant as this sounds, something like this is whats keeping me from flushing my JK. But it's overdue by 2 years but its only at 73k miles. Still, it needs the fluid changed.

It was not, doing the combustion leak test tonight!

 

[SquatchnSass]

Could be your water pump, the internals could fail without leaking fluid, also could be your radiator cap not releasing pressure. btw, I’ve never had to burp any systems or lifting the front ends after replacing fluid , I’ve replaced thermostats, water pumps, radiators etc on many vehicles. On snow mobiles yes.

 

[SquatchnSass]

I Have been through 3 thermostats, replaced the water pump, flushed it twice, and im still having an overheating issue, and im at a loss for what to do next any ideas,
Context, all flushes/bleeds done with front end lifted 6+inches, with a coolant funnel.
No heat in the cab now as well, and the temp will fluctuate from 218-245

Is your fan coming on, if you’re heater’s not working there could be a circulation problem at the heater core.

 

[BLACKJKU]

Could be your water pump, the internals could fail without leaking fluid, also could be your radiator cap not releasing pressure. btw, I’ve never had to burp any systems or lifting the front ends after replacing fluid , I’ve replaced thermostats, water pumps, radiators etc on many vehicles. On snow mobiles yes.

Have you opened up a Jeep JK lately it's been proven it needs to be done?

 

[byoung023]

Could be your water pump, the internals could fail without leaking fluid, also could be your radiator cap not releasing pressure. btw, I’ve never had to burp any systems or lifting the front ends after replacing fluid , I’ve replaced thermostats, water pumps, radiators etc on many vehicles. On snow mobiles yes.

I have replaced the thermostat, water pump, radiator cap, radiator, and all lines and flushed any possible casting sand out of the heater-core, i did a combustion leak test yesterday results are Head Gasket, my new Endoscope comes today gonna try to figure out with bank needs replacing, and if it needs heads as well lmao