uncontrolled full throttle, weird tranny shifting

richardkf · **Joined:** Wed Jun 14, 2006 4:15 pm **Posts:** 167

Ranger1 wrote:

And which of those 2 caveats would apply in my case? The fluid level was nearly perfect from the factory. The filters were not changed due to the tsb, as it did not meet the criteria, nor display any of the delayed engagement symptoms, but due to contamination from destroyed TC debris.

If you recall, the filter tsb symptoms were delayed tranny engagement due to a faulty filter anti-drainback valve letting the TC drain when the pump was not running. My tranny never had any of those issues, nor did the tranny build date fall into the specified range for the filter TSB.

Have you been checking your fluid in Park or Neutral? Has the dealer been checking the fluid in Park or Neutral? It reads different levels. This was a big issue for my dealership.

I had no delayed engagement either (before the TSB), however, I DID have the incorrect type filters in my transmission AND my fluid level was normal before they did the TSB (they didnt fill it all the way when performing the TSB).

I had a slight shudder before the TSB, and now nothing, nothing at all.

The TSB reads symptoms MAY include ... not everyone will experience every symptom.

I am wonering about the types of filters. There was one set of filters used for CRD's with transmissions before a certain build date. A second set was used for CRD's with transmissions during a certain window of build dates. And then a third set (ideally the current set being used now) for transmission beyond the TSB date range. Are the first and the third set of filters the same type or different?

DCX could possibly need to expand the TSB ...

Maybe there is more to the filter issue than just delayed engagement and all those times starting the CRD and driving off in the first 30 seconds )where it really needed extended times for the fluid to be pumped throughout) is gradually frying Transmission or TC.

Ranger1 · **Joined:** Mon Oct 17, 2005 7:40 pm **Posts:** 1137

I've checked both my 02 Liberty, with a 45RFE and my 05 CRD in Park, as instructed by the FSM. In fact, it specifically warns to check in park for accurate measurements, even though the torque converter will fill in both neutral and park. It also instructs to cycle a 2 second period in Drive, then reverse, then park. I always check tranny fluid after a good 15 to 20 mile run when the fluid is fully warmed up.

I changed my tranny fluid on my 02, changed the filters and added an aux cooler at 24K. I also flushed out the tc by pumping it out 2 quarts at a time, adding 2 quarts and repeating until 16 quarts were used at final top off, so I'm pretty familar with checking the level. I also don't really buy the theory that a 1/4 to 1/2 inch level difference is causing the jerking on the 545RFE, as long as the level is within the cold and hot marks - the reason being that while I was adjusting the level on my 02 45RFE, I would drive it short distances between adjustments to get the fluid circulated fully. No shudder or jerking at any time, even with a full 1.5 inch variance before final top off on the 02.

There is a chart in the FSM showing correct level according to fluid temperature. It takes a bit of adjusting to get the level correct because the fluid is quite temperature sensitive and expands quickly as temperature rises. The chart shows the level should be at the top of the cold range at 70F fluid temperature and at the top of the Hot range at 180F fluid temperature.

Ranger1 · **Joined:** Mon Oct 17, 2005 7:40 pm **Posts:** 1137

Quote:

I am wonering about the types of filters. There was one set of filters used for CRD's with transmissions before a certain build date. A second set was used for CRD's with transmissions during a certain window of build dates. And then a third set (ideally the current set being used now) for transmission beyond the TSB date range. Are the first and the third set of filters the same type or different?

They are the same part number filters, with different suffix letters. Same filter, different suffix letters used to track date ranges they were manufactered on. The filters used were not incorrect for the transmission, but defective, according to the TSB. Notice the part numbers never changed, just a small window of time for certain suffix letters.

The bad filters are part number 04799662AB. Good part numbers are 04799662 without any suffix (used in my 05 with the new TC and on my 02 when I purchased them 3 years ago) or 04799662-- with suffix letters later than AB. Anything with AB on it is suspect. The same TSB applies to 45RFE, 545RFE and any vehicle which uses this transmission, not just the CRD.

TDI4BY · **Joined:** Sun Apr 02, 2006 11:56 pm **Posts:** 644

Ever tried running Bio diesel? I bet you it won't buck like you are talking with Bio. EGR is causing most of that.

Pablo · **Joined:** Thu Feb 02, 2006 10:06 pm **Posts:** 1201

Maybe the EGR valve bouncing all around would cause the bucking... but I don't see how it could cause the confused shift pattern. I think it is a combination of software, coupled with the tranny pump not moving enough fluid. Maybe the EGR valve is the final thing to get it bucking like mad. Thing is, mine has not bucked like mad since they did the tranny relearn-- it stutters about--- but it took a couple months before it started stuttering again. The bucking was a whole new experience from the regular confused shifting. If you are wondering if you have the bucking--- you don't. When it happens it is like a Browning BAR on full auto POP POP POP POP and you feel it through the whole vehicle. I am almost at the point where I say stick the warranty-- it is worthless anyway. I should just dump a BDS torque converter in it, shift kit the tranny and figure out how to plug the EGR valve. I have to say, my EGR valve has not given me trouble yet at 18,000 miles (other than possibly helping to cause this). Maybe that is why those with "tranny" problems have EGR's that don't seem to break? (They are broke in another way?)

Ranger1 · **Joined:** Mon Oct 17, 2005 7:40 pm **Posts:** 1137

Quote:

Ever tried running Bio diesel? I bet you it won't buck like you are talking with Bio. EGR is causing most of that.

Run B20 and PS most of the time. Quieter engine, but does not stop the tranny issue. Neither does the near ULSD I'm currently running. Afte 2 new egr valves didn't stop it either. Whatever is causing it, is prevalent enough that many CRD owners are familar with it. Since they didn't replace the pump when my TC burned up, I have no way of knowing if the pump is working correctly or not.

uncontrolled full throttle, weird tranny shifting

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