trever1t

iTrader: (14)

When going over steep hills at low speed (say 50-60mph) the coverter tends to lock/unlock too much. If i drop it down to 3rd it seems like the rpms are too high (2300) for just cruising, and it is a fairly steep (and long 30 minutes up) hill.
Is this 'normal' for a 3000 stall?
Around town and expecially on the hyway it runs great! Step on the peddle at any speed under 70mph and your going back in the seat!

Like my new sig?

Nick™

iTrader: (2)

depends on how tight the stall is and tuning. if it's a tight stall then your lock/unlock numbers may need a little adjustment in the tune.

TravisH

iTrader: (1)

good looking sig and that is normal for a 3k stall. Mine locks a about 52 mph.....I wish it was 45mph

BigBlockChev572

iTrader: (7)

Lock at 52, whew that's suck. I wish mine locked at 40MPH, mines at 45. Even with my two large coolers my transmission fluid overheats rather easily.

bluecajun5.3

iTrader: (31)

by it self, mine locks at 40 to 45. if i manually shift it out of 3rd, i can get it to lock up at 30

TURBHOE

iTrader: (4)

mine locks at about 42 and unlocks around 38-39 but hills its in and out.

Wilde Racing

iTrader: (26)

you can have it lock at any speed, just need aliitle tunning.

hog

Correctomundo. Just get the cruise or normal TCC speed adjusted.

To make the TCC stay locked while climbing those hills, the cruise and/or normal mode TCC release vs tps needs to be adjusted.

On teh hill the truck needs more power to maintain speed, you or the cruise control opens the throttle more. This must make your TPS value that enters the cell which calls for a TCC release.

If the TCC(torque converter clutch) is engaged, I dont see why having a higherstall speed TC makes a difference. When the TCC is locked, the torque multiplication of the tC is taken out of play.

Did the stock TC act the same way on the same hill?

Some simple adjustments to the TCC tables is all that is needed. You are able to select exactly how much TPS will be allowed before the TCC will release.

peace
Hog

1slow01Z71

iTrader: (36)

Normal my truck has done it with all three stalls I have had.

hog

So I guess that means that one SHOULD have some tuning done when installing a higher rpm stall TC.

The TCC release tables must be adjusted along with removal of TM. I have heard that high stall TC's cause the TM functions of the PCM to become confused.

peace
Hog