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| When you hit the "OD" button, which gears are lock http://www.lostjeeps.com/forum/phpBB3/viewtopic.php?f=1&t=2830 |
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| Author: | LibertyCRD [ Wed Oct 19, 2005 3:13 pm ] |
| Post subject: | When you hit the "OD" button, which gears are lock |
Guys... I have the 545RFE 5-speed automatic tranny in my CRD. It has two overdrives. 4th gear is .78:1 and 5th gear is .67:1 I think. My question is...when I turn overdrive off by hitting the button on the shifter, does it lock out both overdrives? Or just 5th? Anybody know?? 
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| Author: | Bonehead [ Wed Oct 19, 2005 3:32 pm ] |
| Post subject: | |
Yea it locks out both overdrives. you are in 3rd(which is 1:1) when button is depressed. |
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| Author: | ShadE [ Thu Oct 20, 2005 1:52 am ] |
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I was told by my dealer that it also changes the shifting points for higher rpms between shifting. is this true? |
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| Author: | MikeD0106 [ Thu Oct 20, 2005 4:51 am ] |
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I'm gonna say sure even though I don't know this for a fact. I only know that when I drive with my OD off that my shift points are way high. Comes in handy when I need to take off quickly from a light. 
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| Author: | LibertyCRD [ Thu Oct 20, 2005 7:57 am ] |
| Post subject: | |
OK thanks for the responses. You are right, it does lock out both overdrives. I used a RPM calculator and did a test drive, and yup...sure enough when you turn OD off it goes straight to the 1:1 gear (which is 3rd on this tranny). Thanks for the help!! OH...and yeah on my Dodge Ram the computer would alter the shift pattern with OD off, so I assume the Jeep does the same thing. Though it's hard to say. |
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| Author: | Jeepjeepster [ Thu Oct 20, 2005 5:40 pm ] |
| Post subject: | |
on the 04 tranny which only has 4 gears, the only thing i can tell it does is hold the shift points to a higher rpm and lock the torque in 3rd at a lower rpm to keep the tranny cooler, kind of sucks too when ur starting from a stop. |
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