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Jeep Wrangler JK
JK General Discussion
loosing power going up hill
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<blockquote data-quote="MacGuyver" data-source="post: 443695" data-attributes="member: 18877"><p>Recalibrating the speedometer is super important on automatics because it manages the shift points, but manual trans it only changes what the speedo says, so that is not your problem. </p><p></p><p>I would change spark plugs, if you haven't already. It's time. I was surprised how much difference it made when I did my 2009.</p><p></p><p>Use the gearing chart to see where you fit. I would hope that the ratio is on the rear diff. It's just a little metal tag, so may have been taken/ fallen off. Probably buried under gunk. Start there. If you have 3.21 or 3.73 that is probably the problem. Especially 3.21.</p><p></p><p></p><p>[ATTACH=full]120301[/ATTACH]</p><p>[ATTACH=full]120302[/ATTACH]</p></blockquote><p></p>
[QUOTE="MacGuyver, post: 443695, member: 18877"] Recalibrating the speedometer is super important on automatics because it manages the shift points, but manual trans it only changes what the speedo says, so that is not your problem. I would change spark plugs, if you haven't already. It's time. I was surprised how much difference it made when I did my 2009. Use the gearing chart to see where you fit. I would hope that the ratio is on the rear diff. It's just a little metal tag, so may have been taken/ fallen off. Probably buried under gunk. Start there. If you have 3.21 or 3.73 that is probably the problem. Especially 3.21. [ATTACH=full]120301[/ATTACH] [ATTACH=full]120302[/ATTACH] [/QUOTE]
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Jeep Wrangler JK
JK General Discussion
loosing power going up hill
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