4+3 Tranny
Burning Brakes
Joined: Jul 2004
Posts: 806
Likes: 0
From: Langley B.C.
Once the ecm sees the right temp it will shift automaticaly in 2cond, third and fourth,unless someone has dissabled it or a switch or sensor is not working.I usually hit the shifter button to shut the auto feature off and some guys disable it right at the ecm!
Thread Starter
6th Gear
Joined: Jun 2006
Posts: 6
Likes: 0
When do you hit the button to turn the auto feature off? When you start the car and you are in first gear or when you are shifting from 1st to second. I am thinking that something may be messed up on my vette.
Burning Brakes
Joined: Jul 2004
Posts: 806
Likes: 0
From: Langley B.C.
I push the button after each start,Then I can control it manualy with the button on top of the stick.(be gentle with that tab because they are not available and it looks like hell with just the rod showing )Mostly I just drive it like a 4 speed unless I am on the freeway,then I use the overdrive. 
Racer
Joined: Sep 2001
Posts: 408
Likes: 0
From: Columbia Maryland
Right after you start up your car, you cannot engage the OD until the coolant temp hits 124*. At that point, it will shift in OD automatically. If you floor it, it will kick down out of OD and once you get back into 4th gear, it will drop automatically back into OD. You can also take it out of OD manually with the button. If you do this, it won't go back into OD til you hit the button again.
Burning Brakes
Joined: Sep 2001
Posts: 1,013
Likes: 9
Originally Posted by Charlutz
Right after you start up your car, you cannot engage the OD until the coolant temp hits 124*. At that point, it will shift in OD automatically. If you floor it, it will kick down out of OD and once you get back into 4th gear, it will drop automatically back into OD. You can also take it out of OD manually with the button. If you do this, it won't go back into OD til you hit the button again.
Team Owner
Joined: Dec 1999
Posts: 34,873
Likes: 487
From: Lacey WA RVN 68-69
NCM Sinkhole Donor
The 4+3 operates differently depending on the year. Look here: http://www.5speeds.com/43table.htm for the differences.
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Burning Brakes
Joined: Jul 2004
Posts: 806
Likes: 0
From: Langley B.C.
Originally Posted by c4cruiser
The 4+3 operates differently depending on the year. Look here: http://www.5speeds.com/43table.htm for the differences.
