2nd and 3rd only in 4l60E trans?
Thread Starter
Joined: Nov 2001
Posts: 2,486
Likes: 4
From: Orlando, FL
2nd and 3rd only in 4l60E trans? A friend of mine just completed an Ls1/4L60E swap in his Impala, wiring the car himself from an original 02 Camaro engine bay harness.
The car runs and drives, but the trans starts off in 3rd and stays there. Manually shifting the lever can get it to go into 2nd, but nothing else. The engine is a low mileage 02, so it's not likely the trans has faulty solenoids internally (although possible)
He hasn't installed an ALDL port yet, I just gave him one tonight so I can put the TECH II on it.... but until then... any suggestions?
The car runs and drives, but the trans starts off in 3rd and stays there. Manually shifting the lever can get it to go into 2nd, but nothing else. The engine is a low mileage 02, so it's not likely the trans has faulty solenoids internally (although possible)
He hasn't installed an ALDL port yet, I just gave him one tonight so I can put the TECH II on it.... but until then... any suggestions?
I believe the shift solenoid in the trans for 1st and 4th is the same and the one for 2nd and 3rd is the same. Looks like the 1st/4th gear solenoid isn't woring. Check the wiring.
I had a similar problem once in my 94Z.
I had a similar problem once in my 94Z.
Thread Starter
Joined: Nov 2001
Posts: 2,486
Likes: 4
From: Orlando, FL
That's what I'm figuring. He's got wires going all over the place, and while I was impressed with how fast he got it done, and the install in general, it is easy to miss something.
Joined: Nov 2001
Posts: 1,707
Likes: 33
From: Anderson, Indiana
The trans probably is not getting powered at all. You need 12 volts on pin "E" of the round trans connector.
__________________
91 Z28 LS2 408CI, LS9 Supercharger, LPE GT7 cam, Yank3000, 3450 raceweight.
Latest numbers: 9.71 ET, 141.42 MPH, 1.40 60' , 610 RWHP Mustang Dyno
www.speartech.com
91 Z28 LS2 408CI, LS9 Supercharger, LPE GT7 cam, Yank3000, 3450 raceweight.
Latest numbers: 9.71 ET, 141.42 MPH, 1.40 60' , 610 RWHP Mustang Dyno
www.speartech.com
Last edited by Speartech; Dec 7, 2006 at 10:49 PM.
Joined: Sep 2004
Posts: 3,147
Likes: 12
From: Downers Grove, IL
Originally Posted by Speartech
The trans probably is getting powered at all. You need 12 volts on pin "E" of the round trans connector.
. Don`t ask how I know 
When he gets the ALDL connector in it will probably be putting out a P0740, 0753, 0758, 0785
Teching In
Joined: Dec 2006
Posts: 24
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Most electronically controlled transmissions default to 3rd gear for a limp home mode. 3rd gear is going to be shift solenoid A and B both OFF. 1st or 2nd gear can be engaged mechanically with the shift linkage just like reverse. I would suggest the transmission is not getting any signal at all from the from the ECU.
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TECH Resident
Joined: Oct 2004
Posts: 800
Likes: 1
From: Simi VAlley,CA
Originally Posted by Whistler
That's what I'm figuring. He's got wires going all over the place, and while I was impressed with how fast he got it done, and the install in general, it is easy to miss something.
Therein lies the answer......"how fast he got it done"
been there, done that
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