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Dodge Ram Transmission Problems



  • well i was taking it to get it flushed at a shop that is 10 miles from my house and all of a sudden it lost 1st and 2nd all together. now all it has is reverse. i beleive that it is going to take more than a flush to fix it now. i have heard that the bands in the tranny might be worn. any ideas on whats wrong with it now? thanks :sick:
  • jmc5jmc5 Posts: 3
    I heard flushing does not completely clean out the other words the filter with the trans will not be replaced. Be careful with trans shops..they quote you a price, but continue charging. Rams are known for sensors going bad...keep an eye on that also.....I'm not a mechanic...just a consumer that still hasn't found an answer for my no overdrive in trans problem....1,2,3 gears are fine.. but no overdrive...
  • What did you ever find out about this? Thinking mine 97 Ram 1500 360 auto,had the same problem. Mine turned out to be the catalytic converter. Would shift fine if I let off a little bit. Then seemed like it was losing power and did not want to pull itself up a small incline. Had it to pay for flatbed towing to get it home after the transmissions shops told me I needed a rebuilt at 1400.00 plus. Got it home knocked the beehive looking crap out and ran great, just like before.
  • dustykdustyk Posts: 2,931
    This post is intended to address the most recent concerns regarding the 46RE. One of the biggest problems encountered is an unknowlegable person trying to diagnose various issues on the 46RE. More often that not shift problems are related to relatively easy items to repair.

    First, understand that the 46RE is an electronically controlled, hydraulically actuated transmission.

    There are a number of things that can affect a no 3-4 shift:

    *Assuming that the OD Switch on the stalk is off, the switch could be defected causing the OD circuit to be defeatured. This does happen!

    *Overdrive circuit fuse is open.

    *The overdrive switch circuit either open or shorted. Check the connectors at the transmission for corroded terminals. This is very common on older RAMs.

    *Incorrect outputs from the Distance or Coolant Sensors. A punky Distance Sensor can caused a weird collection of symptoms, including no 3-4 shift. Also, remember that the 46RE will not shift in to fourth gear until the transmission fluid reaches a certain temperature. If the coolant temperature sensor is bad you will not get a 3-4 shift. If this problem is recent to the winter weather, this should be a prime suspect.

    *Incorrect output or intermittent output from the Throttle Position Sensor. On Dodge trucks the Throttle Position Sensor can cause all kinds of problems. Maybe even global warming!

    *The Neutral Sense circuit to the PCM is open or shorted.

    *The Overdrive Solenoid either shorted, open, or weak. On older 46REs the solenoid plungers became partially magnetized over time causing inoperation.

    *The Overdrive Solenoid feed orfice is clogged in the valve body. A very common problem on vehicles that DID NOT receive a reqular transmission filter and fluid maintence.

    *Low hydraulic pressure. This can be caused by a number of things, too. But before you suspect the pump I'll bet that the Anti-Drain Back valve in the transmission line is clogged. Some shops clean them, but I would recommend replacing it and changing out the fluid.

    *Failed Overdrive Clutch. Unfortunately, this is somewhat common in earlier years, especially vehicles that towed heavy loads or were used in hilly country with the vehilce in overdrive.

    *Failure of the Overdrive Piston Seal. Usually not a problem unless very high mileage or Dexron-Mercon fluid was used.

    *Clogged Overdrive Check Valve. The result of dirty transmission fluid.

    *If this transmission has been "overhauled" or "rebuilt" by an independent and they DID NOT use a Mopar transmission overhaul kit, it is very possible that Overdrive Piston has the incorrect spacer installed.

    *PCM failure (the least likely).

    Hope this helps.


    PS Always use the Chrysler specified ATF. For pre-2000 vehicles, ATF+3 is okay. For 2000 and and later, ATF+4 must be used. NEVER USE DEXRON-MERCON FLUID IN A DODGE TRUCK TRANSMISSION.
  • Is there a chance that one of these items is my problem? my shift from 1st to 2nd is happening at about 3200 RPM. All other trans functions are fine, also, i just got the truck so i have no idea what fluid is in it.

  • dustykdustyk Posts: 2,931
    Are you also experiencing really sensitive (early) part-throttle downshifts?

    If so, it sounds like the Throttle Valve Cable (Modulator Cable) is out of adjustment, the Throttle Valve Return Spring at the transmissionis is broken or missing, or the Throttle Valve Lever at the transmission is binding.

  • my 97 1500 does the same thing any answers yet
  • jmc5jmc5 Posts: 3
    My truck is in a shop at this time with NO Overdrive...1, 2,3 gears are fine. I will pass this message on to the shop and will get back with you to see if any of the electrical problems you mentioned have worked...thx
  • everything works fine at start up, once the tranny reaches operating temp the O/D light comes on and a few minutes later the trans temp light comes on. When it first started, they would eventually go out and everything was fine. Now they stay on.
  • dustykdustyk Posts: 2,931
    Dropping out of overdrive is a default symptom when the transmission fluid temperature sensor detects an overheat.

    It would be beneficial to know the history of this vehicle, but my first suspect would be a clogged anti-drain back valve. When partially clogged, fluid flow to the transmission is greatly reduced.

    You should try to determine if the fluid is really over heated. If the ATF smells hot and measures over 240 degrees F, then there's a problem. If not, it could mean the transmission fluid temperature sensor is defective.

  • 2001 Dodge Ram 1500 Quad Cab 5.9l 4x4. when running cold and shifted in reverse the engine stalls out. after running for appox 15 minutes reverse works fine. The only way I've found to prevent engine from stalling is to keep foot on gas to keep rpm's up but as soon as I take foot off gas it will stall unless I shift into neutral. Does anyone have any ideas on what's going on?
  • dustykdustyk Posts: 2,931
    Does this same problem occur when you place the transmission in drive or any other forward gear?

  • No only reverse
  • dustykdustyk Posts: 2,931
    You have a 46RE transmission.

    Could be a dragging clutch or a stuck servo.

    I'd recommend taking a line pressure check and going from there. This is where a good Dodge dealer should be consulted.

  • Thanks a lot!
  • Alright, I'll start off by saying I don't actually have the truck right now. I'm gonna take a look at it on Thursday for a friend. It's a 2000 Dodge Ram 1500 V8 automatic transmission. Not sure what other details pertain at the moment, but:

    MIL came on and she reported the truck lost power. Code reader came up with P1757(Governor Pressure Above 3 PSI When Request Is 0 PSI) and P1764(Governor Pressure Sensor Voltage Too Low) as the only codes. After resetting (disconnecting the battery) the MIL didn't come back on for a while, usually after she got out of her complex (3rd gear maybe, don't know for sure) it come back on. The two together makes me think bad sensor, but I just wanted to see if I could get a confirmation/second opinion. Fluid level is fine (well, some guy at a AutoZone-clone checked it for her and said it was fine), and there's no other problems reported.

    If it is the sensor, any resources out there for replacing it. Only thing I have covering that truck (Haynes) has only rudimentary transmission information, and nothing even showing where the sensor is (I haven't gotten a chance to actually see the truck yet)
  • I have slip in overdrive in my 97 Dodge Ram 1500. It's the 5.9 L V8. All the other gears are fine and the slip is very minimal. It's full of tran. fluid it did get low b/c I had a leak in the supply line to the trans. oil radiator, got that fixed and dumped two quarts in. I'm worried about it having done serious damage but don't know because it only slips in OD. ANy avenues I should take before I start looking for a 1300 rebuilt? Thanks
  • In followup to this post, today we took a look. Tracked down a problem with an aftermarket PCM "enhancer", but still have a problem with with the P1764 code. I ran it through its paces after we cleared it, and it was fine for town and highway, and then again later, but then the MIL came back on and it set the same code. We're thinking that either the sensor is bad, or there's something farked in the wiring. The only problem is we don't have diagrams for the transmission, or real wiring diagrams (just what's in the Haynes book). Anyplace online we can find the transmission diagrams, or even just the PCM pinout would help track it down.
  • I have my faithful 02 Ram 1500 4.7. The other day it started slipping when starting off and from 2nd to 3rd gear. When it gets hot it seems to work better.

    Took it in to my transmission place for a free check out and the found that the clutches are slipping. According to them the computer for the transmission will monitor the shifting and electronically adjust the clutch to get the best performance. When the truck is off for a while the system resets and until it works for a while to readjust them it slips. Being I have 164K they suggested a rebuild at approximately $1400.

    My dilemma is I still owe some money on it, it also needs some other minor repairs approx $600-1000. I love the truck and if I decide to trade will get another most likely.

    What else might I expect over the say next 100K to have to be repaired? Diff, frontend, engine

    Just trying to make the best decision I can.

    Thanks for any help.
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