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3rd gear is only 3000 RPM taller than 2nd gear

Old Sep 14, 2014 | 11:53 PM
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Default 3rd gear is only 3000 RPM taller than 2nd gear

help just bought my 3rd gear is almost the same as 2nd
 
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Old Sep 15, 2014 | 07:58 AM
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Huh? Do you mean 300RPM? In any event neither 300 or 3000 makes any sense.


2011 Ram 545RFE Gear Ratios
1st 3.00
2nd 1.67 — upshift; 1.50 kickdown
3rd 1.00
4th 0.75
5th 0.67
Reverse 3.00
 
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Old Sep 16, 2014 | 09:18 AM
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Hears what I mean. Under normal throttle 1st gear upshifts from 1 to 2. At around 3200. And drops back to 1200. 2nd. Goes up to 3200 shifts drops back to 1200. Runs up to 3200 and shifts to 3 rd. Thin it just drops back to 2900. And thin shifts to 4 th at 3200. Its only 3000 rpm taller. Its almost like it skips 3 rd all to getther
 
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Old Sep 16, 2014 | 09:30 AM
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What you are likely seeing with the 300 RPM drop is the torque convertor lock up. An auto doesn't behave like a manual transmission, you don't just get the 5 distinct gears, you also get each gear (except 1st) plus a convertor lockup.
 
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Old Sep 17, 2014 | 08:07 AM
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This truck has the auto with the +\- manual assist when in D it skips 3rd all together. And when in manual it is only 300 rpm taller. You still think its the tourque converter. ?
 
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Old Sep 18, 2014 | 06:25 PM
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As already explained to you, 3rd on the evic screen is actually 2 prime
its a 1.5 ratio as opposed to the usual 1.67 ratio used for normal upshifting.
do the math
1.67gear ratio @ 3200rpm
would be X = 3200/1.67
so X multiplied by 1.5(2nd prime ratio) gives you 2874rpm
Relax your transmission is working perfectly fine.
On the 545rfe 2nd prime is only accessible on a kick down or in manual auto mode where you select 3rd which is actually 2prime
 
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Old Sep 18, 2014 | 06:52 PM
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Exactly what 02RegCab said.
 
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