FLT L5 Billet DEAD?

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11-04-2009, 09:37 PM
2boosted

FLT L5 Billet DEAD?

I have this FLT trans that probably have on it 5 passes and 3000 miles most......

Today driving it at traffic, real slow, at a 175 temp it stop making gear changes and a code appears. arived home and scan it to see a P0757.

I just deleted, but parked the truck, not using it until I know what to check change or if it is time for a new Trans.

BTW, my engine is not putting all the power out, just mid of FLT trans life was at 7 psi, and one pass at 8 psi, and been at 8 psi ever since. Probably around 600 WHP or less.

Any tips in where to star checking?
11-04-2009, 09:43 PM
EmmerichLSx

Probably the shift solidoids.
11-04-2009, 09:56 PM
RedHeartbeat

http://www.ls1truck.com/forums/pcm-t...ght-codes.html
11-04-2009, 10:37 PM
GasGuzzler

Quote:

Originally Posted by emmerich5.3

Probably the shift solidoids.

Wow, that's general especially since it's uncommon for THEM to fail.

Quote:

Originally Posted by RedHeartbeat

http://www.ls1truck.com/forums/pcm-t...ght-codes.html

From memory it seems a short to ground on the control for THAT solenoid is most likely, whether it's a wire issue, a solenoid issue, or more likely in this case a fried PCM.
11-04-2009, 10:43 PM
2boosted

#6 (permalink) http://www.ls1truck.com/forums/image...ons/report.gif
http://www.ls1truck.com/forums/image...n/post_old.gif 05-31-2006, 03:47 PM
RedHeartbeat http://www.ls1truck.com/forums/image...er_offline.gif
LS1Truck Moderator
Join Date: Nov 2003
Location: Denton Texas
Posts: 16,846

Found it, delete/remove/turn off P0757 and P0751 and problems will vanish. :thumb:

How Come it did not show before, even at racing? The converter is a Precision Industries 3000 stall !

I'll hunt those codes in my tune rigth now, thanks Red
11-04-2009, 10:55 PM
2boosted

additional info, also I got a p0102...but I have no MAF, and it suppost to be a SD tune.....should I errase that code too?
11-04-2009, 10:58 PM
RedHeartbeat

turn it off.

The converter code issue is hit and miss. It shows on some and others it doesn't.
11-04-2009, 11:17 PM
2boosted

Quote:

Originally Posted by RedHeartbeat

turn it off.

The converter code issue is hit and miss. It shows on some and others it doesn't.

Red,
just for asurance, P0102 must be turn off too?
11-04-2009, 11:23 PM
RedHeartbeat

101, 102 and 103 should be set to 2, no MIL light and have a checkmark in the box.
11-06-2009, 09:25 AM
Vince_B

Not sure who you have to do your tuning but these are the codes that are normally turned off with a high stall converter. PO751 and PO757. The issue is because the computer see's slippage due to the converter stall being higher than what the factory spec's are. Sounds like your trans went into a limp mode condition (3rd gear starts) which really is not the transmissions fault. It is only doing what the computer is telling it to do.

I think the title of this thread should read I have a code on my FLT Billet transmission! Need help! Vince
11-06-2009, 11:16 AM
farmtruc

Quote:

Originally Posted by 2boostedSilverado

Red,
just for asurance, P0102 must be turn off too?

Leave those codes alone, lol, they are set ok, your truck is sd tuned.

Quote:

Originally Posted by RedHeartbeat

101, 102 and 103 should be set to 2, no MIL light and have a checkmark in the box.
11-06-2009, 11:48 AM
2boosted

Quote:

Originally Posted by Vince @ FLT

Not sure who you have to do your tuning but these are the codes that are normally turned off with a high stall converter. PO751 and PO757. The issue is because the computer see's slippage due to the converter stall being higher than what the factory spec's are. Sounds like your trans went into a limp mode condition (3rd gear starts) which really is not the transmissions fault. It is only doing what the computer is telling it to do.

I think the title of this thread should read I have a code on my FLT Billet transmission! Need help! Vince

Hi Vince,
I actually co-op in the tunning, and sure my tuner
probably forgot this. You and Red are totally right, the trans went to
a 3rd mode and I had to manually shift it to my home. Now I know what
to do, since this happend I have not touch the truck cause I did not
want to mess things up. That is why I post this, cause I know nothing
about transmision behavior, and to my untrained eye, it was in fault
and totally dead. Before that it has work like a charm. Hopefully this
weekend I'll flash the pcm and get the trans back on line. And btw, if
the trans was-is damage, I was-will go for a FLT L7. I really like ur
service, and both of my FLT trans for my non daily drivers have
delivered great. We all know 4L60E r the weakest link of our 5000
pounds rigs. But I'm kind hard headed when it comes to 4L80E (hate
them), and changing my Auto trans supplier (FLT). Gabe
11-06-2009, 11:51 AM
2boosted

Quote:

Originally Posted by farmtruc

Leave those codes alone, lol, they are set ok, your truck is sd tuned.

Too Late Dude...did as Red Told me and probably now is a high 10's truck..LOL

JK, just checked the tune file, and it was as RED told me, no need to change anything there. Thanks Anyway