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Jeep Wrangler JK
JK General Discussion
2015 Jeep Wrangler Overheating Issue
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<blockquote data-quote="Anybodyhome" data-source="post: 452613" data-attributes="member: 19161"><p>That's why I'd be concerned with some radiator blockage.</p><p></p><p></p><p>The temp fluctuation is not normal. Your temp gauge should remain pretty much on center regardless of driving conditions. This symptom, alone, leads me to believe the system still has air in it, albeit maybe not as much as before.</p><p></p><p>And again, when you start it cold, wrap your hand around the upper hose and you'll feel if you're getting water flow immediately. If so, the t-stat is stuck open and needs to be replaced.</p><p></p><p>The temp spikes are caused when coolant is not flowing through the water jacket in the engine block, even for a mere second or 2 and/or there is no air flow past the radiator. Did the temp spikes occur when moving and what happened when you came to a stop with the engine running? I'm guessing the temp may have gone up while waiting at a light or stop sign.</p></blockquote><p></p>
[QUOTE="Anybodyhome, post: 452613, member: 19161"] That's why I'd be concerned with some radiator blockage. The temp fluctuation is not normal. Your temp gauge should remain pretty much on center regardless of driving conditions. This symptom, alone, leads me to believe the system still has air in it, albeit maybe not as much as before. And again, when you start it cold, wrap your hand around the upper hose and you'll feel if you're getting water flow immediately. If so, the t-stat is stuck open and needs to be replaced. The temp spikes are caused when coolant is not flowing through the water jacket in the engine block, even for a mere second or 2 and/or there is no air flow past the radiator. Did the temp spikes occur when moving and what happened when you came to a stop with the engine running? I'm guessing the temp may have gone up while waiting at a light or stop sign. [/QUOTE]
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Jeep Wrangler JK
JK General Discussion
2015 Jeep Wrangler Overheating Issue
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