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05 Dakota auto tranny slow to engage when cold

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Old 04-16-2011 | 06:44 PM
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Default 05 Dakota auto tranny slow to engage when cold

I have noticed lately that when I pop my truck into gear after sitting, it will take a while to engage. I seem to remember it instantly engaging before. Other than that it seems to perform fine. Its an 05 4.7L 4x4 truck with 80k miles and I have upgraded the transmission shift strategy to the canned Superchips strategy.

I am familiar with older Mopar autos such as the 904 & 727 where the tranny needed to pump fluid for a bit in N before going into gear and how later OD versions (518) had a check valve in the cooling line to prevent drainback.

I'm wondering what could be the issue. I changed both filters and fluid change last fall.

Does the 545RFE have an anti drainback system that can go faulty?
 
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Old 04-16-2011 | 07:07 PM
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its a well known problem une oil filter in the trans has been opgraded for one with a check valve go at the dealer for info...its a recall that pass under the 5 year drive train warranty...but you have a 2005 so i dont think you gonna have it warrantied
 
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Old 04-17-2011 | 07:53 AM
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ya i have an 06 r/t 4.7 4x4 and its doing the same thing so wat u guys r saying that its a filter that need to be changed
 
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Old 04-17-2011 | 08:29 AM
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Its most likely 1 if not all
- Fluid
- Filters (yes the trans has 2)
- Trans check valve
 
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Old 04-17-2011 | 09:01 AM
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Back in Fall I serviced the tranny with both new plate style filter and the little caniser filter (that looks like a baby engine oil filter). I bought both of these at Advance auto.

The problem didn't start immediately after the service but just recently.
 
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Old 04-17-2011 | 11:07 AM
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I had similar problems where my tranny was slipping. Took it back to the trans shop a few times, where they were pulling codes but couldnt figure out what was wrong. They swapped the filters for 2 new ones from the dealer and I havent had a problem since. The bad filters let the torque converter drain when the truck is off, and the tranny wont engage unless the torque converter has fluid in it. When the truck goes on, the torque converter takes a few seconds to fill up if it has drained. Mine was draining some, but still engaging but it was slipping for the first few seconds of driving lightly.
 

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Old 04-19-2011 | 07:05 PM
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It seems to be intermittant. I've been trying to pay attention to when it does it. Perhaps the drainback valve in the filter was just on the blink.

If its simply the converter draining out when shut off then I am not too worried.
 
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Old 04-19-2011 | 07:10 PM
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Yeah, mine did it for a few weeks and I couldnt figure out what was wrong (I was calling around getting rebuild prices) and then finally one day I was backing out of the driveway, it threw a code and went in to limp. I noticed mine would do it when parked facing downwards on slight slants. If I parked the other way, it never slipped.
 



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