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Constant in and out of lockup

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Old 01-23-2017, 12:09 PM
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Default Constant in and out of lockup
Anytime I am driving on the highway over 60mph, my car is kicking in and out of lockup. Any ideas???

82 Monte Carlo
01 5.3L
00 Z28 4L60E (rebuilt)
Vigilante 3600 stall
programmed by Texas Speed
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Old 01-23-2017, 02:13 PM
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Any codes? Might need the lockup tables adjusted. They can be fussy with a stall. Look at speeds and TPS
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Old 01-24-2017, 11:41 AM
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No codes. I'll have to try to find a local programmer.
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Old 01-24-2017, 11:49 AM
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Check this out, pretty common problem. Requires a spendy reamer or a transmission shop can do it if you bring them your valve body.
http://www.sonnax.com/parts/2458-tcc...ator-valve-kit
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Old 01-24-2017, 02:10 PM
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Originally Posted by silverado01
No codes. I'll have to try to find a local programmer.
rig a switch to ground pin S on the tranny plug to see if it locks up. If so, it's a tune issue...not a mechanical. Or at least much less likely.
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Old 01-24-2017, 02:54 PM
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Originally Posted by truckdoug
Any codes? Might need the lockup tables adjusted. They can be fussy with a stall. Look at speeds and TPS
^___This.....sounds like they need to be tightened up a bit. Normal lockup is around 45-50MPH......

T,
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Old 01-26-2017, 12:50 PM
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This is the 3-2 Shift Solenoid Valve Control right?
Just turn it to ground when I am going 70mph?


Originally Posted by truckdoug
rig a switch to ground pin S on the tranny plug to see if it locks up. If so, it's a tune issue...not a mechanical. Or at least much less likely.
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Old 01-26-2017, 02:26 PM
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Originally Posted by silverado01
This is the 3-2 Shift Solenoid Valve Control right?
Just turn it to ground when I am going 70mph?
should go to the tcc solenoid....but I posted from memory, which is a bit glitchy these days
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Old 01-26-2017, 11:01 PM
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If you get this figured out please post what fixed yours. Mine does it right around 45-50 and will stop if i tap the brake pedal and then when the tcc engages usually does it again
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