Auto trans question
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Senior User
Joined: Apr 2009
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From: Sunny Southern California
Auto trans question
Sorry for my ignorance, I've been driving a manual for the past 15 years...
When you are driving at a constant speed and whomp on the gas pettal, should the tack:
a. stay put and slowly rise with the speed
b. slide up about 500 rpms and rise with the speed?
When you are driving at a constant speed and whomp on the gas pettal, should the tack:
a. stay put and slowly rise with the speed
b. slide up about 500 rpms and rise with the speed?
Last edited by Macamon; Apr 17, 2009 at 10:52 PM. Reason: Observed that something was incorrect
Laughing Gas
Joined: Jun 2005
Posts: 1,009
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From: Colorado
as posted above.. when u floor it it will downshift and unlock the torque converter giving a big jump in RPM then you will see the RPM rise slightly while the speed increases quite a bit until the Torque converter locks completely and then you will see a preportional increase between RPM and vehicle speed beyond that point...
A torque converter is a fluid coupling that allows slipage between the engine and trans. once its locked up based on engine speed and torque then its like a manual trans clutch with a solid connection between engine and trans
A torque converter is a fluid coupling that allows slipage between the engine and trans. once its locked up based on engine speed and torque then its like a manual trans clutch with a solid connection between engine and trans
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Senior User
Joined: Apr 2009
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From: Sunny Southern California
Which would make a 5-800rpm increase when accellerating normal, right?
I'm noticing some odd shifting too... Kinda like 3rd gear gets skipped sometimes (huge drop in R's). I understand there is a computer that can be reset to delete what it has learned... Would reseting the shift computer (disconnecting battery for 5 minutes) help that?
I'm noticing some odd shifting too... Kinda like 3rd gear gets skipped sometimes (huge drop in R's). I understand there is a computer that can be reset to delete what it has learned... Would reseting the shift computer (disconnecting battery for 5 minutes) help that?
Thread Starter
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Senior User
Joined: Apr 2009
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From: Sunny Southern California
Thanks aldridgec. That makes sense. I pulled battery terminals off for 5 minutes last night... Looked at how ugly everything was and decided to do maintainance on the terminals. Two hours later (I'm sure the trans program was reset by then :P) I put it back together. I still need to take for a testdrive.
