Peakster's Chrysler Thread - Page 2 - Fuelly Forums

Click here to see important news regarding the aCar App

Thread Tools Display Modes
Old 04-24-2007, 08:23 PM   #11
Registered Member
Join Date: Oct 2005
Posts: 1,978
Country: United States
Ah, the TC

Originally Posted by trebuchet03 View Post
Some mfr's have the tranny go into lockup early.... It requires a more beefy system, but they exist... I remember my '93 SW2 did it

As for why not? In slower city traffic, going into lockup and then unlocking and then locking up again isn't so great in the heat, wear and tear departments. But when the roads are more open, and you're not constantly taking your foot off the pedal (and unlocking), it's not a benefit at all Lockup on hills isn't so fun either -- especially when there's not enough throttle to change gears (finding holes in logic programming) Additionally, a locked TC won't give you any torque multiplication

When I was driving an auto -- I got up to my lockup speed as fast (reasonably) as I could and then let off in the throttle so it would finally go into lockup... It is like another gear (shift wise).
Exactly where I'm at right now -- especially with the hill logic programming. 35 mph is full lockup (25-35mph) offers partial lockup on hills. Peak mentioned something I notice as well -- full lockup is tough on FE at <2000 RPM, but after the momentum is going, it's great.

The service manual mentions the ECU altering the timing just before a shift, to make it smoother. I can see the action on the SG -- shifts, drops MPG for a moment -- but FE increases.

But yeah, if I see no obstacles for a while, I get up to lockup speed as quickly as <3000 RPM will allow, lock-up, back off the throttle and modulate. It takes a lot of lifting the throttle at the target RPM, and feeding it back (but not too much to downshift -- that drives ya nuts).


rh77 is offline   Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Ethanol pianoeck General Fuel Topics 5 05-25-2010 01:01 AM
MPG, last 2 fuel ups read blank Draigflag Fuelly Web Support and Community News 4 04-28-2010 03:30 AM
VX parts wants GasSavers_Jack Wanted to Buy 1 11-03-2006 09:53 AM
Infinity mpg, but only in the daytime. omgwtfbyobbq Electric and Solar powered 6 10-11-2006 12:24 AM
Elevations' effect on Tire Pressure chesspirate General Fuel Topics 7 08-11-2006 01:08 PM

» Fuelly iOS Apps
Powered by vBadvanced CMPS v3.2.3

All times are GMT -8. The time now is 10:28 PM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, vBulletin Solutions, Inc.