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Jeep Wrangler JK
JK General Discussion
2015 Jeep JK overheating
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<blockquote data-quote="Lckydrw" data-source="post: 463740" data-attributes="member: 25254"><p>Same problem on 35s with 3.21s. I tested this theory by running my engine at my desired RPM on the gear chart by controlling when I shift. </p><p></p><p>IE my setup with 4.56 shows my RPMs at 2350 instead of my current 1800 at 70mph with my auto transmission. Which is where my 4th gear keeps my RPMs now. Rode around in 4th…engine temps remain normal. Confirmed Regear needed. </p><p></p><p>Too much work with not enough coolant circulating.</p></blockquote><p></p>
[QUOTE="Lckydrw, post: 463740, member: 25254"] Same problem on 35s with 3.21s. I tested this theory by running my engine at my desired RPM on the gear chart by controlling when I shift. IE my setup with 4.56 shows my RPMs at 2350 instead of my current 1800 at 70mph with my auto transmission. Which is where my 4th gear keeps my RPMs now. Rode around in 4th…engine temps remain normal. Confirmed Regear needed. Too much work with not enough coolant circulating. [/QUOTE]
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Jeep Wrangler JK
JK General Discussion
2015 Jeep JK overheating
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