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Old 02-16-2009, 02:39 PM   #1
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Car: 1988 firebird trans am
Engine: 305 fuel inject. tbi
Transmission: 700r4

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Transmission not shifting right?
The 3 speed plus overdrive tranny wont shift into overdrive all the time. Will shift when engine is cold at 55-60. but when warm- 80+ or never. Anyone know what the problem could be?
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Old 02-16-2009, 02:45 PM   #2
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Car: IROC Z28
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Re: Transmission not shifting right?
i may be wrong but think the overdrive is in the torque convertor, or so im told
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Old 02-16-2009, 02:52 PM   #3
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Car: 1988 firebird trans am
Engine: 305 fuel inject. tbi
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Re: Transmission not shifting right?
o, to be honest i know cars but i dont know a whole lot. So are you saying my torgue converter is out then?
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Old 02-17-2009, 07:13 PM   #4
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Car: 1991 firebird/1982 trans am(sold)
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Re: Transmission not shifting right?
You must have a th700r4 tranny... It's not your torque converter as stated it is a problem in the computer that shifts the tranny.. As in a relay..
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Old 02-17-2009, 08:12 PM   #5
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Car: 1988 firebird trans am
Engine: 305 fuel inject. tbi
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Re: Transmission not shifting right?
does that mean i need a new computer
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Old 02-17-2009, 08:57 PM   #6
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Car: 1988 camaro z28
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Transmission: 700r-4 built by me 3-4 z pack
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Re: Transmission not shifting right?
the computer does not control transmission shifting just torque converter lockup.could be a valvebody problem, tv cable adjustment or 3-4 clutch pack going out in the transmission
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Originally Posted by federal View Post
You must have a th700r4 tranny... It's not your torque converter as stated it is a problem in the computer that shifts the tranny.. As in a relay..
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Old 02-17-2009, 08:57 PM
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Reload this Page Transmission not shifting right?
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