Last post on Nov 02, 2013 at 6:36 AM
You are in the Dodge Dakota-2010 and older
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Dodge Dakota, Truck
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#533 of 1029 Re: 2001 Dodge Dakota 4.7L with the 545RFE transmission [rresa]
Feb 18, 2009 (5:28 pm)
Battery issues will cause some pretty quirky problems in Dakotas, everything from losing the time on the clock or presets in the radio, random chimes, rough idle, and irratic transmission problems.
The IOD fuse probably isn't labeled. It isn't on my 2003, either. It is a ten ampere fuse, usually, and on later Daks it's found in cavity 18. But check all of the fuses just to be sure.
A defective TPS can most certainly cause irratic shifts on Mopars. The person at AutoZone obviously does not know how things work.
Good Luck and best regards,
#534 of 1029 Re: 93 dakota transmission issues [bigcfi]
Feb 18, 2009 (5:44 pm)
A number of things can cause a 2-3 flair on a 42RE, burnt clutches, sticky servo, bands out-of-adjustment, clogged valve body, or sticking shift solenoids, just to name a few. One thing that will certainly cause this problem is the throttle linkage being out of adjustment or sticking Throttle Valve Cable or Throttle Valve Shaft (pivot on the left side of the transmission case). The operation and adjustment of this valve is critical to correct shifts. If the cable adjustment is too loose the transmission will try to shift into the next higher gear too soon causing low hydraulic pressure and subsequent slipping (flair).
If I read your message correctly, you are contemplating replacing the transmission in your 3.9 Dakota (a 42RR or RH) with one from a 318 equiped truck. The V8 is either a A518, 44RE/RH or a 46RE/RH. I know it will bolt up, but I'm not sure about the transmission length. I advise taking a length measurement before you yank the tranny out of your truck.
#535 of 1029 Re: 93 dakota transmission issues [dustyk]
Feb 18, 2009 (7:50 pm)
thanks dusty,,i've read your replys on all 53 pages and know you know what your talking about,,any good way to tell which tranny i got from the 318,,it came outa a 93 dakota extendta cab 4x4 just like mine...the only numbers on the case are 067-1 in 2 places... big looks like a welded on number and a number stamped by the chrysler logo on top thats 17904 other than those number thats all i can find ,,do any of those numbers sound right?
also the dip stick is marked use dextron II on it ,,i know i should use mopar 4 fluid right?? but did they originally use dextron 2 in these years??
i looked at the throttle cable today and it appeared to be a couple mm out of alignment ,,also when i first checked the movement of both throttle and cable it appeared the lever on the tranny was hanging up at first mabey at 1/3 of the travel ,,after i readjusted the cable i tried it again and it didn't seem to stick anymore but still seems sluggish between 2-3 shifts unless i let of the throttle ,,the spring is in place and seems ok ,,it will manually shift 1-2-and 3 with 3 being the most sluggish,,i have changed the filter twice now and there was sludge in the pans both times but no major chunks or peices,,tommorow i'll check the tps for voltage and let ya know what i find ,,thanks for your ideas ,,i really don't want to rip this one out if it could be solved with the trans in ,,\thanks again
#536 of 1029 Re: 93 dakota transmission issues [bigcfi]
Feb 19, 2009 (9:08 am)
hello again,,well did some more checks today,,tps voltage from computer with key in on position is 4.8,,resistance with tps off vehicle read .4closed to1.9 wide open on 2k scale..readings increased and decreased evenly thru all positions,, so i beleive the tps is working ,,i'm not sure if the numbers are within tolerances i can't find any references to spec's in my haynes manual,,
you mentioned there may be a lenght issue in changing the 6 tranny with the 5.2 ..i measured both ... the 5.2 i can say definatly is 32"L while the one still in the truck as best i can tell is 32+1/2"L but thats an estimate and kinda tuff to get exact measurements,,the 5.2 tranny part number is PK52118311-1742-2666 and i beleive thats a 46RH part number ,,the tork converter has a sticker on it marked high stall and i've been told to do the change over i need to use my 6cyl flexplate,,correct?,,thanks in advance
#537 of 1029 tranny issues and questions (more)
Feb 20, 2009 (6:36 am)
,,well did some more checks today,,tps voltage from computer with key in on position is 4.8,,resistance with tps off vehicle read .4closed to1.9 wide open on 2k scale..readings increased and decreased evenly thru all positions,, so i beleive the tps is working ,,i'm not sure if the numbers are within tolerances i can't find any references to spec's in my haynes manual,,
you mentioned there may be a lenght issue in changing the 6 tranny with the 5.2 ..i measured both ... the 5.2 i can say definatly is 32"L while the one still in the truck as best i can tell is 32+1/2"L but thats an estimate and kinda tuff to get exact measurements,,the 5.2 tranny part number is PK52118311-1742-2666 and i beleive thats a 46RH part number ,,the tork converter has a sticker on it marked high stall and i've been told to do the change over i need to use my 6cyl flexplate,,correct?,, also i checked the codes stored in the computer,,i had 5 codes but never had the check engine light come on,,the codes were 12,,32,,24,,15,,17,,i cleared them and drove it to see if they came back and the only 2 that came back were 12 and 32 and the slipping seemd to stop but seems to have less power and i think that could be comming from the egr code ,,will replace that before i continue with the tranny issues ,, are the tps check readings ok and within limits?
thanks in advance
#538 of 1029 Re: 2001 Dodge Dakota 4.7L with the 545RFE transmission [dustyk]
Feb 20, 2009 (6:56 am)
Thank-you for the updates as they are most helpful!!!
I found the IOD fuse and it is good, so I will start will changing the TPS then get a trans fluid changed / flushed and get a new trans filter.
One question on the TPS, do you need to reset the PCM and if so, can this be done by disconnecting the battery for a short time or is there more involved. Thanks!
#539 of 1029 2002 dakota 4x4 sport overdrive kicking out
Feb 22, 2009 (4:28 am)
My 2002 dakota sport has 105000 miles on it I have the 545RFE trans. Problem is that when excelerating once I'm at 45 mph the transmission will jerk and seems to kick out of overdrive. If I were to stop shut the truck off and restart it I will have overdrive back. It doesn't happen all the time. If I keep it out of overdrive it runs just fine. The check engine light does come on but clears itself if it doesn't happen for a while. Just change fluid/filters. Still happening.
#540 of 1029 Re: 2001 Dodge Dakota 4.7L with the 545RFE transmission [rresa]
Feb 22, 2009 (9:34 am)
No, you do not need to reset the PCM after replacing the TPS. However, if after replacing the TPS things are still not right, try disconnecting the battery for two minutes and try it again. Sometimes the Transmission Control Module (TCM) will keep compensating for a TPS problem (Throttle Position Out of Range) and run the computer adaptive algorithm all the way to the end of its value. This can give you irratic or strange shift sequences.
You will lose all Priority 0 through 4 DTC stored faults and learned shift schedule. However, all Chrysler automatic transmissions are at least semi-adaptive (all RFE versions are fully adaptive) and after some drive time will relearn.
#541 of 1029 Re: 2002 dakota 4x4 sport overdrive kicking out [ndc]
Feb 22, 2009 (9:39 am)
I could give you some ideas, but they could all be wrong. Since the CHECK ENGINE lamp has been illuminating, it is going to set a fault code in the PCM. This discussion will benefit greatly by knowing what the faults are.
In the meantime, have you performed any transmission maintenance on this vehicle in the past?
#542 of 1029 Re: tranny issues and questions (more) [bigcfi]
Feb 22, 2009 (10:17 am)
Late model A-series and all RE & RH series transmission have their identification markings stamped onto the edge of the transmission pan flange on the left side of the transmission case. There are three sets of numbers: the first ten digits are the part number, the second four digits are the build date, and the last set of four are serial number of the case. A-series had the model welded on the side of the case. Newer versions rely on the stamped part number. (RFEs use a white label.)
With the exception of the Aisin-Warner Jeep tranny, never use Dexron in a Mopar truck transmission. Never. Yes, Chrysler stamped the use of Dexron on to dipsticks for a number of years, and I can tell you they are real sorry now. They did this to indicate that Dexron could be used in very small quanity to bring the transmission fluid level to specification, however this was not approved in their service manuals. But, many people thought this implied that Dexron was approved for use, and it wasn't, especially in quanties more than one quart. As we know now, one quart of Dexron added to ATF+3 will cause accelerated degradation of the fluid.
If thje Throttle Valve pivot on the transmission is still sluggish, you may need to replace the shaft. I've seen these get corroded on older transmissions, especially those that had a high moisture content in the fluid (another reason to change fluid regulary!).
It sounds like you were reading TPS voltage with a digital meter. The voltages are within range, but you cannot determine a rough spot on the potentiometer wiper (resistive) surface with a digital meter. Here's where an old fashioned analog VOM will do a better job. However, I gave up on checking this after I found that I thought one was good after test, but it proved to be bad anyway. Because of the age and vintage, I would suggest just replacing it. They had a higher rate of defects in those years.
I'm not into tranny swaps, so I do not consider myself qualified to comment on the flex plate issue. However, I'm pretty sure the flex plates are different between a 42 and 46RH.
I think I answered all of your questions.
Good luck and best regards,