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4l80e lockup problem

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Old 07-02-2011, 10:35 AM
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Originally Posted by Circle-D
Very good to hear. Did you end up doing the Sonnax valve?

Chris
no i never did the sonnax valve, if i ever need to pull the trans open again i will do it next time.
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Old 07-02-2011, 12:18 PM
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Originally Posted by Silverado_SS_04
no i never did the sonnax valve, if i ever need to pull the trans open again i will do it next time.
I was just curious as to what fixed the converter issue. Maybe the old pump volume was to low at idle???

Chris
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Old 07-03-2011, 04:32 PM
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Originally Posted by Circle-D
I was just curious as to what fixed the converter issue. Maybe the old pump volume was to low at idle???

Chris
i had the truck out last night and it seems when the trans temp get to 150+ the lock up problem acts up a abit in reverse only.

not so much that it bogs the truck down to stall out but it is noticeable abit

did someone mention their was a spring i can replace in the pump to make more pressure at idle? or how does that work?

Thanks guys.
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Old 07-05-2011, 12:13 AM
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anyone? i bumped the idle up in my truck 100rpm and it helped abit but its still just happening in reverse only.
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Old 07-05-2011, 08:15 PM
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Originally Posted by Silverado_SS_04
anyone? i bumped the idle up in my truck 100rpm and it helped abit but its still just happening in reverse only.
I will try and get some pics for you tomorrow...

Chris
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Old 07-06-2011, 04:03 PM
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You need to add an inner spring to the "Converter Limit Valve" Factory limits it to ~100 PSI. Adding an inner spring will bring it up to ~150. This will increase the pressure and volume to the converter. Let me know if you need anything...

Chris
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Old 07-06-2011, 05:55 PM
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ok where can i get one of these springs? it looks like i will need to pull the pump out to get to this right?

Thanks!
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Old 07-06-2011, 06:05 PM
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Originally Posted by Silverado_SS_04
ok where can i get one of these springs? it looks like i will need to pull the pump out to get to this right?

Thanks!
Correct, out and apart. I can send you one, just take a while...

I would also put the Sonnax valve in, could be VB wear as well...

Chris
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Old 07-06-2011, 08:10 PM
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ok sounds good, i would like to get one asap.
also where can i get the sonnax valve from?

thanks.
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Old 07-06-2011, 09:10 PM
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Originally Posted by Silverado_SS_04
ok sounds good, i would like to get one asap.
also where can i get the sonnax valve from?

thanks.
I sent you an email........

Chris
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