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4L60E no 3rd gear?

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Old 10-02-2011, 03:51 PM   #1
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Default 4L60E no 3rd gear?

I just bought a 96 ss with a 4L60 transmission . It shifts into 2nd fine but 3rd and 4th feels like neutral
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Old 10-02-2011, 04:03 PM   #2
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do you have a way to watch live data on the transmission? sounds like its a rebuild situation to me does reverse work?
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Old 10-02-2011, 08:00 PM   #3
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yes reverse works , I don't have any way to look at live data. I was planing on rebuilding the transmission but I thought it might have a bad soleniod
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Old 10-02-2011, 08:27 PM   #4
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If the transmission goes to shift into 3rd gear and just neutrals, it is an internal problem not a solenoid. With a no 3rd or 4th gear complaint I would bet that you have lost what is referred to as the 3-4 clutch. HTH Vince
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Old 10-04-2011, 12:08 PM   #5
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Literally same thing happened to me last Thursday. Now its in the shop getting rebuilt
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Old 10-06-2011, 07:37 AM   #6
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skip to 3:50 to see the actual effect of a 3-4 clutch failure.

if you want to hear me rant for a bit about why i am more pissed than a normal failure. just let it play from the start
1995 Firebird Formula LT1:

160* stat, K&N CAI, CRT intake elbow, 52mm holly, TB bypass, EGR!, AIR!, Hooker LT's, x-pipe, magnaflows, vig3200 stall, fully built 4L60E, 3.42's gears, and a 100 shot.
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Old 12-20-2012, 05:57 PM   #7
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Default lose acceleration in 3rd

my 4l60e in third gear loses acceleration but it doesnt drop into like a neutral but no matter how hard i press the pedal unless i stomp on it it hardly gains rpms. Even when i stomp on it it hardly gains speed.
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Old 12-31-2013, 04:14 PM   #8
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Would a bad 3-4 clutch cause no WOT shift to 3rd? Everything at part throttle shifts fine. It just stays in 2nd to rev limiter at WOT.

What other possibilities could cause this symptom?
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Old 12-31-2013, 04:33 PM   #9
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Most people describe a completely worn out 3-4 clutch as a shift into Neutral, just banging the rev limiter. If it stays in 2nd gear, that indicates the WOT shift table (in the tune) has too high a MPH to make a shift. This could be caused by slippage in the converter, slippage in the trans, or if the tune was just changed - a bad tune. It commonly happens after a higher stall converter is installed.

Was anything changed recently? Is the car stock?

If nothing was changed and the car is stock, it could be a slipping band while in 2nd gear.
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