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Messages posted by: flman
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Good, I bought one for the Sport, but never got around to putting it in, I will wait until I have to crawl under the beast to replace the torque converter or something that put me in that situation.
Does both sides use the same mounts?
Just wondering what the HP and torque rating are with both tunes? Did it increase, or does it just prevent the TCM from underrating the Hot Tune?
Low fluid is not something that my Libby had. But a good tip for others.
zoom_camper wrote:Thanks for the information! Since new my CRD has always gone into 5th lock-up at 59MPH, it will hold this until speed gets down to 56MPH and still does. I was under the under the understanding that the TC and the front pump were to be replaced with the F37 recall.

It sound like the only thing the dealer did was to put a sticker on the radiator support, keeping the F37 kit (TC and front pump) they had and charged Jeep for the repair. Maybe I'm lucky.

What is the differnece between the ECO tune and the Inmotion's ECM tune other than 3 hp, 6 ft-lbs torque, and a $100 cost difference?


I will let Mr. Green answer that for you.
zoom_camper wrote:Is there any way to tell if the transmission was removed for the F37 recall. After ready several on-line forms, most people's statedthat their crd's shift points changed, mine did not. I also got the jeep back the day I took it in before the end of the day; the under hood F37 sticker has a hand written note: PCM flash update, and date. I am wondering if they actual did the work?

When I was younger and making hotrods, sometime it took all day if not overnight to change-out a tranny. But we didn't really have the correct tools, just strong muscles.

I just know that on a grade my jeep downshifts where it didn't before and the temp gage goes up past the middle. Funny a gage without numbers really isn't a gage but a fancy idiot light thank for posting numbers at least I have some idea now!


No need to remove the tranny for the F37, it is programmed into the Transmission Control Module, that is located on the right fender. If it makes its final shift to 5th gear at 59 MPH it has no F37, if it has to get to 64 MPH to hit 5th gears, it has F37.
I am not sure if any one else has used this procedure? I took a shortcut and had a set back. I skipped removing the fan blade to allow access to the flywheel bolt and turned the engine at the flywheel starter gear with a screwdriver, a good idea if you are working alone. The set back was, the tab to the tranny dip stick that is bolted the to the upper bolt got stuck between the engine and tranny bell housing I did not know this until most of the bolts were snugged, in the future I would put the dip stick tube back in after the tranny is bolted back to the engine.

My transmission jack was a 2 1/2 ton floor jack with a 2' 2X8 fastened to it.
flman wrote:
GreenDieselEngineering wrote:The drain back valve would only effect the first engagement, not the situation you just mentioned. A new TC is peace of mind in your situation as it will only keep deteriorating. Don't wait too long as eventually particles can go through the system and damage the pump if anything gets past the filters.







Never fear, it is on jackstands, and I am up to "remove the crossmember and the 2 upper bell housing bolts."
GreenDieselEngineering wrote:The drain back valve would only effect the first engagement, not the situation you just mentioned. A new TC is peace of mind in your situation as it will only keep deteriorating. Don't wait too long as eventually particles can go through the system and damage the pump if anything gets past the filters.


Never fear, it is on jackstands, and I am up to "remove the crossmember and the 2 upper bell housing bolts."
GreenDieselEngineering wrote:The stalling is a good sign that the TC is nearing the end of its useable life. A leaking drainback valve may alse be an issue here, but typically if is fails the trans will just not engage reverse when selected and after 10-20 seconds the pump finally pushes enough fluid back into the circuit to allow engagement and torque transfer. If this engagement is abrupt it could potentially cause an engine stall.


Well, it went in reverse, back out into the street, then I went to drive, and it came to an abrupt stop. So, would you think it was still not getting fluid, even though it went into reverse just fine? What is the drain back valve, is it the valve in the spin on filter? To make matters worse, my wife said she put the other Libby in reverse and it stalled on her as well. Mr.Mopar says this is classical TC failure.
My torque converter is doing the infamous stall the engine when going from reverse to drive, so I just ordered the Euro TQ. Once I get it in the shop and start the project, I will be sending in my TCM for the flash. Things were not supposed to happen like this, I was not going to change my TQ just for this flash, but as fate has it, here we go. 1 Jeep down, 1 to go.
I only own 06 models, so dont think I am biased. But I hear the 06s have a few minor improvements over the 05s, and they are very minor, the only thing I recall, is a connector on the boost hose, but there may be more. I just have no reason to really follow it. There is no difference in the mileage between the 2. The Eco tune would give the engine some of its lost power from the F37 but it would not wipe it out. The F37 was a flash to the TCM and it is encrypted. But I hear some one has cracked the code, and a TCM flash may be available soon. You should visit and join Lostjeeps.com and check out the CRD forum, it is a wealth of info, and worth the $30 membership that is not mandatory. http://www.lostjeeps.com/forum/phpBB3/viewforum.php?f=5
Well, after getting the Libby LTD Hot tuned, I was getting shudder with the additive, so I added a second tube and pulls some grades at about 53 MPH and 1700RPM, I am pretty sure it the TC was locked, it seemed the second tube solved the problem. Just like Keith said, some of the TCs are better then the other. My Hot tuned Libby Sport has one tube in it, and never made a shudder since.
Yeah, I just got the Hot tune on the LTD. I will see where the mileage is at, but prolly not
 
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