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Auto Tranny question

TX-TahoeLtd

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TX-TahoeLtd Enthusiast

TX-TahoeLtd

Posted
Posted

Hi Guys (and Gals if there are any).

 

I know this is a Chevy forum, but I wanted to get the most exposure so I'm cross posting on a couple of sites.

 

Generally speaking, what would you speculate the problem would be if when shifting from P -> D, R -> D, or from N -> D if it took about 2 - 4 seconds and then engaged to D with a kind of clunk. No real huge banging noises, just feels like it engaged in gear very hard. Like about what you'd expect if somone hit you from behind going 2 or 3 mph.

 

 

Recently, I had to have the torque converter replaced (under warranty) and less than 2k later, this starts happening.

 

It also seems to hesitate when going from P -> R, but no clunking or jerking around.

 

 

02 Jeep Liberty, V6, auto

 

 

Any hints or ideas as to what the problem may be is greatly appreciated.

 

Jeep's at the stealership now getting looked over, but I just was curious to what others thought.

 

No codes in the computer - or at least none reported when doing the on/off thing 5 or 6 times.

 

 

Thanks for the help on this!

99-2door Senior Enthusiast

99-2door

Posted
Posted

Not sure what the cause is, I do know that this problem plagues a lot of Jeep vehicles. The good news is you may be able to find info about it since a lot of people have this problem.

TX-TahoeLtd Enthusiast

TX-TahoeLtd

Posted
  • Author
Posted

Found out that it was 3q low on tranny fluid. :rolleyes:

 

I'll be calling the other dealer on Monday. I think I was told they replaced the torque converter, but per the dealer network when they looked my VIN up, it had been totally overhauled.

 

 

Now, it's driving fine on level ground, but when I drive up my driveway it kind of shudders like it's slipping in and out of gear. :chevy:

 

 

I won't bore you with any more details on this non-GM vehicle. ;)

 

 

Thanks anyway guys!

dr9672723 Enthusiast

dr9672723

Posted
Posted

Please pardon me if I am mistaken, but I believe the tranny in your liberty is a rear wheel drive version of the tranny used in the minivan, the 41TE, also known as the A604.

 

I have a '96 Caravan with this tranny, and it's on it's third rebuild (I did the last one). You should be grateful that there have been several improvements to this transmission since '96, and many since the earlier models. What an overworked, undercooled P.O.S.

 

It is very critical that you use the proper fluid in this trans., which for your year would be ATF+4. Many people AND MECHANICS think that Dexron is good enough, which is simply not true. Dexron is not slippery enough, and will cause your clutches to shudder as the computer tells them to grab and let go very quickly during a shift. It's computer looks at the speed of the turbine as well as the output to determine how quickly to apply and release the clutches. This transmision shifts from clutch to clutch, instead of using bands the way conventional transmissions do. In the interest of giving smooth shifts, they designed this tranny with a lot of slip and overlap. In so doing they generate a lot of heat, and an auxilliary cooler is a good idea.

 

A good website to look at is allpar.com for more information. I think you should verify what fluid was put in it (if I am right about the transmission you have). If Dexron is in it, flush it and get ATF+4 in it! It is synthetic and will last longer, as well as take heat better. Good Luck!

juicy Enthusiast

juicy

Posted
Posted

my 99 z71 does this but its a clunk in the transfer case...

 

do i need to replace the fluids in the transfer case?

 

also when i got my tranny flushed they didnt change the filter...

 

my truck has 50,000..

and i need some maint. tips for 50,000 :o

TX-TahoeLtd Enthusiast

TX-TahoeLtd

Posted
  • Author
Posted
Please pardon me if I am mistaken, but I believe the tranny in your liberty is a rear wheel drive version of the tranny used in the minivan, the 41TE, also known as the A604.

 

I have a '96 Caravan with this tranny, and it's on it's third rebuild (I did the last one). You should be grateful that there have been several improvements to this transmission since '96, and many since the earlier models. What an overworked, undercooled P.O.S.

 

It is very critical that you use the proper fluid in this trans., which for your year would be ATF+4. Many people AND MECHANICS think that Dexron is good enough, which is simply not true. Dexron is not slippery enough, and will cause your clutches to shudder as the computer tells them to grab and let go very quickly during a shift. It's computer looks at the speed of the turbine as well as the output to determine how quickly to apply and release the clutches. This transmision shifts from clutch to clutch, instead of using bands the way conventional transmissions do. In the interest of giving smooth shifts, they designed this tranny with a lot of slip and overlap. In so doing they generate a lot of heat, and an auxilliary cooler is a good idea.

 

A good website to look at is allpar.com for more information. I think you should verify what fluid was put in it (if I am right about the transmission you have). If Dexron is in it, flush it and get ATF+4 in it! It is synthetic and will last longer, as well as take heat better. Good Luck!

Wow! Thanks for the info. I'll look into the fluid issue. I don't have any paperwork on what was recently done b/c the dealer who left the fluid low had to pay for the repairs done at the other dealership.

 

In any case, I'll look at my owners manual and my sticker and figure out which tranny I have.

 

 

I do notice a lot of slip in the tranny when it was behaving normal. My Tahoe has firm shifts and I prefer that. The Lib shifts like a standard when someone likes to ride the clutch.

 

 

Will post other updates! Thanks!

99silveradoz71 Senior Enthusiast

99silveradoz71

Posted
Posted
my 99 z71 does this but its a clunk in the transfer case...

 

do i need to replace the fluids in the transfer case?

 

also when i got my tranny flushed they didnt change the filter...

 

my truck has 50,000..

and i need some maint. tips for 50,000 :o

Front and rear diffs would be good to do. The t-case fluid has been upgraded to a blue fluid from the General. Per the tsb, you're supposed to drain and refill, drive a few miles, then drain and refill again. I changed my t-case and had the nickel slip yoke and yoke lubed and the culmination of all 3 services has quieted the truck down.

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