converter lock up
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Tuned
Joined: Apr 2004
Posts: 306
Likes: 2
From: San Antonio, TX
converter lock up
When they say that the converter will lock up what does that mean? What does the truck do when it is locked up? Also, I have seen an upgrade for converter lock up, How will this upgrade help out the truck? 
Butt-Head
Joined: Apr 2004
Posts: 9,432
Likes: 2,919
From: Reed Point, MT
Inside the torque convertor of a 'lock-up' convertor, there is actually a hydraulically controlled clutch that locks the engine to the transmission input shaft (much like a manual transmission) thus eliminating most of the slippage in a normal torque convertor. The reason for the clutch and lockup is: One, to reduce transmission temperature while cruising. When the torque convertor 'slips', it is actually pressurizing ATF and forcing it against the stator and driven half of the convertor. This is where 95% of tranny heat comes from. Eliminating the 'slip' effectively significantly reduces trans fluid temps. Two, Eliminating the 'slippage' by providing a direct driving link to the transmission reduces engine RPM by about 250-300 RPM at a cruise thereby increasing fuel economy.
Cody
Oops....
Upgrades for convertor lockup will cause lockup in two or three gears (second, third, as well as fourth) at steady speeds and light throttle which lowers tranny temps.
Cody
Oops....
Upgrades for convertor lockup will cause lockup in two or three gears (second, third, as well as fourth) at steady speeds and light throttle which lowers tranny temps.
Post Fiend
Joined: Aug 2002
Posts: 5,324
Likes: 1
From: Denton,TX
Diesel Injection Service sells them for about $300. Here's a link:
http://www.dieselpage.com/bdebf.htm
Banks also sells one but they don't list the price. I checked MotorHaven and they don't sell any.
http://www.dieselpage.com/bdebf.htm
Banks also sells one but they don't list the price. I checked MotorHaven and they don't sell any.
Last edited by johnsdiesel; Apr 28, 2004 at 12:08 AM.
Junior User
Joined: Mar 2004
Posts: 53
Likes: 0
From: Singer Island, FL
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Junior User
Joined: Mar 2004
Posts: 53
Likes: 0
From: Singer Island, FL
Originally Posted by red4x4
Doesn't the Transcommand lock up the converter also?
Anyone know?
Which is the best automatic device to lock and unlock the converter?
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