TC lock up switch
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Supreme Member
iTrader: (1)
Joined: Apr 2000
Posts: 1,108
Likes: 1
From: Baltimore, MD
TC lock up switch
What is the purpose form this? How is it used? Why is it used? How do i know if i should make one? do you need them on a computer controlled car with a lock up converter?
I guess that about covers everything i can think of.
Thanks ahead of time for any help
------------------
*1989 RS
*Red, Daytona Turbo fiberglass hood, chrome 16x8 IROC wheels
*355 CID
*TPI ported plenum, SLP siamesed runners, Edelbrock high flow intake
*SLP 1 and 3/4 headers with 3 inch catback
*Richmond 3.73, Auburn Posi
*Modded 700-R4, 2800 stall converter
*eibach pro kit and hotchkis sturt tower brace
I guess that about covers everything i can think of.
Thanks ahead of time for any help
------------------
*1989 RS
*Red, Daytona Turbo fiberglass hood, chrome 16x8 IROC wheels
*355 CID
*TPI ported plenum, SLP siamesed runners, Edelbrock high flow intake
*SLP 1 and 3/4 headers with 3 inch catback
*Richmond 3.73, Auburn Posi
*Modded 700-R4, 2800 stall converter
*eibach pro kit and hotchkis sturt tower brace
Supreme Member
Joined: Apr 2001
Posts: 4,969
Likes: 0
From: USA
Car: yy wife, crazy.
Engine: 350, Vortecs, 650DP
Transmission: TH-350
Axle/Gears: 8.5", 3.42
What is the purpose form this?
It causes a direct drive action that acts like a manual clutch would.
How is it used?
It is engaged by the ECM depending on throttle position, RPM, speed, engine load, and the gear that the tranny is in at the time. I.E., it works in every gear except 1st.
Why is it used?
It reduces the RPM level at cruising speeds while under light load. It reduces engine wear, tranny heat, and increases MPG.
How do i know if i should make one?
Your car had one from the factory. If the TC that you are using has the lockup feature, then the ECM is already doing it for you. That's also if the "Modded 700-R4" that you have also has the switch in it.
do you need them on a computer controlled car with a lock up converter?
If you do a lot of highway driving, then it is a good idea, for the reasons I posted above. In stop-and-go driving, the lockup feature does very little.
I believe all the aftermarket switches only lock up the TC in 4th gear.
Hope this helps a little.
AJ
------------------
92 RS w/t-tops 305 TBI Auto.
170K miles and don't burn a drop o'oil
-K&N Truck filter #1500 w, open ele.
air cleaner
-Dynomax 2 1/2" cat-back
-B&M TransPak
-Jet Stage2 Chip
-180* T-Stat w/ 185* Fan Switch
-JVC CD--Alpine speakers & 4ch. amp
Rockford Punch 100. 1 - MTX 12" sub
[This message has been edited by AJ_92RS (edited November 05, 2001).]
It causes a direct drive action that acts like a manual clutch would.
How is it used?
It is engaged by the ECM depending on throttle position, RPM, speed, engine load, and the gear that the tranny is in at the time. I.E., it works in every gear except 1st.
Why is it used?
It reduces the RPM level at cruising speeds while under light load. It reduces engine wear, tranny heat, and increases MPG.
How do i know if i should make one?
Your car had one from the factory. If the TC that you are using has the lockup feature, then the ECM is already doing it for you. That's also if the "Modded 700-R4" that you have also has the switch in it.
do you need them on a computer controlled car with a lock up converter?
If you do a lot of highway driving, then it is a good idea, for the reasons I posted above. In stop-and-go driving, the lockup feature does very little.
I believe all the aftermarket switches only lock up the TC in 4th gear.
Hope this helps a little.
AJ
------------------
92 RS w/t-tops 305 TBI Auto.
170K miles and don't burn a drop o'oil
-K&N Truck filter #1500 w, open ele.
air cleaner
-Dynomax 2 1/2" cat-back
-B&M TransPak
-Jet Stage2 Chip
-180* T-Stat w/ 185* Fan Switch
-JVC CD--Alpine speakers & 4ch. amp
Rockford Punch 100. 1 - MTX 12" sub
[This message has been edited by AJ_92RS (edited November 05, 2001).]
Member
Joined: Oct 2000
Posts: 166
Likes: 0
From: Trenton NJ USA
if your talking about the tech article on making one (ALDL lock-up switch) i highly recomend it...i've done many passes with and without the TC locked up and the avg was a 2mph gain and about a tenth or so...it really does work...don't leave it on though it will build up excessive heat in the TC
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