I'm starting to get a shudder when the torque converter locks up at 50mph. Also it shudders when I start to come to a stop. Has this been an air in fuel issue or torque converter issue in the past. Any help would be appreciated.

Todd

i believe both....

i had the shudder that lessened with the cummins mod...

now i am feeling something different... i'll be installing the
suncoast, et all, on sunday so monday i should feel a difference

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Trevor

'05 Limited CRD Inferno Red Pearl Coat
Home made provent installed @ 35443, SEGR installed @ 35466, Fumoto valve @ 37500, trans and transfer case skid, In tank pump installed @ 43500, Suncoast TC & Transgo Shift Kit @ 44730, EGT, Boost, Trans temp gauges, Samco hoses, Rebuilt Trans w/ HD454RFE kit @ 56K, Inmotion Stage 2 @ 56K

A good way to determine what you have is to define if you have a "shuDDer" or a "stuTTer". It sounds like you have is the shuDDer and that points to the TC exspecially with the "coming to a stop" part But you mention 50 MPH. The stuTTer is most notable at about 52-54 MPH after accelerating then letting off to maintain that speed and the tc is locking up. That's air in the fuel and it feels like your running out of fuel

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Atlantic Blue 06 CRD Limited (his)
Joined by a 2000 XJ Classic (hers)

LOL Joe that is a good way to put the fuel problem, stu-stu-stu- stuttering ing-ing

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2006 Black Jeep Liberty CRD Limited
K&N, Samco Hoses, Michelin 245/70-16 LTX A/T2, Fumoto F-102, V-Force Muffler, Mopar, Hitch, Trailer Wiring, Skid Plates, Slush Mats, Rear Shelf, Predator Stage 1, Transgo, ORM & CodeReader, Facet 40109 Pump
"IT'S A DIESEL THING, YOU WOULDN'T UNDERSTAND"
Certified Services Auto & Truck Repair

I had a shudder problem that was not fuel or torque converter related. It's the accelerate then hold speed manuever, with the torque converter already locked up. It would start 3-5 seconds after I got up to speed and could last indefinitely.

It's an air flow control problem. It's helped (but not completely solved) with the ORM.

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2005 CRD Limited Flame Red w/ Renegade rock rails & light bar, AirLift 1000. 225/75R16 MT/R's on cheap black steel wheels, dual MOPAR subwoofers, Ipod kit & seat covers, Samco hoses - totaled and gone. 2008 WK Laredo 3.0L diesel - AirLift 1000, wife won't let me mess with it much. 2013 JK Sahara on order.

I bled the fuel filter head, and there was not any air so I guess its a torque converter issue. I've taken it to the dealer twice and got the can't duplicate response. Mayber it will get worse before my powertrain warranty runs out.

Take your CRD out and find a long hill where you can get the studder/shudder speed. Get up to the bottom end of that speed before the incline. When you push on the go pedal just enough to maintain lock-up on the TC it should start that wonderful shudder/studder. Practice this a few times so you can replicate on demand under the given conditions.

Now take it to the dealer and ask the SM (Service Manager, or Sado Masochist as some of us may see things) to go on a ride with you so you can point it out. I also went through the trouble to video tape the shudder as further evidence.

End result. I have had four TC's under warranty. The new TC will help matters for a few weeks then she gets back at it again. The have also tried to add a Friction Modifier to my Tranny Fluid, that did not help. Dealership wants to put a SC in there, but corporate won't authorize it due to legalities tied to liability on non-Chrysler parts.

My opinion, they can continue to replace my TC until the warranty is up. When I hit that point I will have the SC TC and new tranny pump put in (this is all sort of a PITA, but I am going to get my warranty's worth of repairs on this one).

Good Luck

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2005 CRD Sport, Provent CCV, JBA gen 4.5 A-arms
Frankenlift II w/ 3/8" strut plate and extended front Bump Stops
Rear ARB Locker,RL Skink Super Sliders
TJM Front Bumper w/ Warn XD9000
Suncoast TC, Boiler Radiator Skid, Boiler Roof Rack

I also had a shudder feeling on the highway and also when I would decelerate to a stop. Turned out my rear u joint was dry and had to be replaced. Just a thought. I put one in that can be greased every oil change so it will never get dry again.