2000 Dodge 2500 transmission problems

I noticed about two weeks ago that when the truck shifts to overdrive ( about 50 mph) the rpm's jump about 300 more rpm and it feels as if the transmission is slipping. Is it time for a rebuild ? I have been reading this board and there is alot of talk about the torque converter. How can you tell if it the TC or the transmission ?

Reply to
dirtclod
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First, tell us what engine you have, so we'll know which trans you have. Second, let us in on you mileage and maintenance, as well as fluid level, color, and smell.

Next, the shift into OD means the TC unlocks briefly, so the problem might be electronic, and its worth looking for codes.

Last, the clutches involved are the OD in the OD section, and the front and rear in the main section. Have you noticed slipping in any other shift?

Reply to
Max Dodge

Does sound like rebuild. Hope you have 2Gs to spare, unless you can climb underneath and pull it out to help save a lot of labor cost.

I hear the TC from DTT Diesel Performancehelps a lot, but it's another grand for that. I got one on my truck and a massive trans cooler that is under the truck with a big fan that has a thermostat on it. Heat kills the auto trans. Mine never goes above 200 degrees even in stop n go traffic.

Quoted from DTT:

DTT PRODUCT BENEFITS:

a.. 30-40% more power transfer b.. 100° less heat c.. 1-2 Mpg fuel economy improvement d.. Unsurpassed torque multiplication and fluid coupling e.. Increased transmission life

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Reply to
GeekBoy

It has the CTD. 2500 with 4x4. It has 72000 miles and I don't know about trans. service. I've only had it a year. I had the fluid and filter changed. Filter was dirty and fluid was not real bad but dirty. This didn't help the problem. THe fluid didn't smell burnt. Thanks.

Reply to
dirtclod

Reply to
Lorne

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Diagnose the symptom through the PCM first, checking the data parameters and for codes.

or.......

guess........

A simple GOOGLE will help you with the guessing.

~:~ Marsh Monster ~tranny tech~ ~~doesn't guess~~ ~:~

Reply to
Marsh Monster

Boy, they must love seeing you pull in. TPS gone, give him a $2k transmission.

Before dirtclod get's carried away with a major repair, he might want to check for codes, the tps, the brakelight switch.

Roy

Reply to
Roy

Not likely, if the OD switch is in the ON position the converter won't lock until after the 3-4 upshift.

The converter clutch operation can be checked by placing the OD control switch in the OFF position, the converter lockup will then occur shortly after the 2-3 upshift.

Reply to
John Kunkel

======= =======

what he said ditto

~:~ MarshMonster ~sips his coffee~ ~:~

Reply to
Marsh Monster

====== ======

true

Fact, not Fiction

~:~ MarshMonster ~:~

Reply to
Marsh Monster

It won't help the problem to change fluid, since the detergents in the new ATF would effectively clean out any dirt that had helped seals work.

If the fluid was dirty, its not likely good news. Any debris in the pan?

Reply to
Max Dodge

Excellent advice. This may or may not be a trouble code, depending on if its a complete failure or an intermittant fault.

Reply to
Max Dodge

Thats incorrect, as my 2000 ALWAYS locks in third before the shift to OD.

It could be tested by driving the truck and observing closely as well.

Reply to
Max Dodge

False. The FSM and my truck disagree with both Kunkle and the Marsh Mellow.

TC lockup can and does occur in either 3rd or 4th gears.

Reply to
Max Dodge

would that not also cause the cruise to intermit or inop?

Reply to
Christopher Thompson

Reply to
Lorne

yup, from what I've seen and been told, it could very well.

Reply to
Max Dodge

Not according to the FSM text that I provided a link to below. You love to claim that the FSM backs up your bogus arguements but when the FSM actually contradicts your claims you go into the double talk mode.

You're pathetic, read back in the thread, I never argued the engagement parameters, only the function of the control switch which you keep dancing around with your typical diversionary tactics. If you had a valid argument you wouldn't need to resort to your pathetic tactics.

The UNHIGHLIGHTED text in the pic is what you quoted above, it is meaningless without the info on the control switch which I did highlight.

You're the liar. Refer to the line in this thread with date and time stamp where you said anything like that.

See the reference to "hollow gesture". I'm really not surprised that you "feel" the imagined shift sequence, after all you're the same one who claims to "feel" the improved shift after accumulator spring removal; another impossible fantasy.

Your reading skills are as lacking as your knowledge, the underlined portion of the pic I posted clearly states "The clutch can be engaged in third or fourth gear depending on overdrive control switch position". That, combined with the highlighted portion clearly contradicts your claims.

Atta boy Scotty, refer to a TSB that describes an ABNORMAL condition. Your original claim was that converter disengagenent at the upshift is a NORMAL condition.

Ah, the old Budd Cochrane rule, huh? Disregard logic and proven data and believe your claims? Birds of a feather.

Reply to
John Kunkel

Actually, as I stated, it does back up my argument, no double talk about it. Next, my truck backs up my argument. I achieve 3rd gear lock up at about

32-35mph. I've checked the numbers, and there is no way its in 4th gear. I'll say it again, I've seen it happen, I don't give a damn what you have to say, or the rhetoric you spew. Anyone who would like to see it happen need only try it, or come see for themselves.

My "pathetic tactics" are nothing when compared to your bluster when you are proven wrong.

Um, WRONG, I specifically directed your attention to the line which you highlighted. See, thats just more of your bluster.

No problem John, right here:

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Path: nwrddc02.gnilink.net!cyclone2.gnilink.net!cyclone1.gnilink.net!spamkiller.gnilink.net!gnilink.net!trnddc06.POSTED!9a3338ba!not-for-mail From: "Max Dodge" Newsgroups: alt.autos.dodge.trucks References:

Subject: Re: 2000 Dodge 2500 transmission problems Lines: 124 X-Priority: 3 X-MSMail-Priority: Normal X-Newsreader: Microsoft Outlook Express 6.00.2900.2869 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2900.2869 X-RFC2646: Format=Flowed; Response Message-ID: Date: Wed, 31 May 2006 21:47:55 GMT NNTP-Posting-Host: 70.18.67.149 X-Complaints-To: snipped-for-privacy@verizon.net X-Trace: trnddc06 1149112075 70.18.67.149 (Wed, 31 May 2006 17:47:55 EDT) NNTP-Posting-Date: Wed, 31 May 2006 17:47:55 EDT Xref: news.verizon.net alt.autos.dodge.trucks:142382 X-Received-Date: Wed, 31 May 2006 17:47:51 EDT (nwrddc02.gnilink.net)

Sec 21, pg. 319, First paragraph, fifth sentence, "The converter clutch engages in third gear."

Pretty clear, and is exactly what my truck does, regardless of the position of the OD on/off switch. I have CC LU at approx 30-40mph in 3rd gear, depending on throttle position. CC LU is an electronic function, and is thus controlled by the ECM, not hydraulics. As such, the CC locks up when the ECM dictates. (21-323, 3rd paragraph, continued on 21-324) Converter clutch engagement in third or fourth gear range is by sensor inputs to the PCM, coolant temp, engine RPM, MPH, throttle position, and MAP, none of which are the OD on/off switch. This is in direct contradiction to the next line which states what you have stated, that the OD on/off is what dictates the CC LU event.

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See that last sentence John? Here, I'll paste it right here:

"This is in direct contradiction to ****the next line which states what you have stated, that the OD on/off is what dictates the CC LU event."*****

Yup, thats right John, in plain text, right before your very eyes, I made SURE that you knew that I had seen your reference and the exact sentence in the FSM. Sadly, you'll have to take htis up with the engineers, as all I know of the design is that it supposedly works BOTH ways, and my truck works as I have described.

Well John, I figured you might be lame and try to bluster your way out of this, but the math confirms what I saw on the dash. 32MPH at about 1500RPM suddenly becomes 32MPH at about 1375RPM after a slight jolt..... do the math for yourself, its NOT in OD at that point. If you read the FSM, its not supposed to be in OD at that point. (For your math excursions, I have factory size tires on the truck)

Thats correct, and it contradicts the line immediately before it, where the FSM claims the CC is contolled by input from everything but the OD switch. It also contradicts what my truck does. Sorry it doesn't conform to your limited view of the world. I don't know why my truck does the LU at

32-35MPH, but its clear that it does. I'd even say its a bit odd the way it does it but then, as I've stated before, the electronics weren't always doing things logically in the 47RE transmissions.

It certainly is normal given that its a hydraulic function meant to safeguard the transmission. It is clearly shown how it works in both text and schematics in the very FSM you claim says it can't happen. What ISN'T normal is the LACK of either happening, as is indicated by the title of the TSB:

47RE Transmission - Delayed Upshift Or No TCC Engagement Between 30 and 50 MPH Thats right Johnny, if the title says its referring to an event that is delayed or not occurring, NORMAL means it SHOULD happen. Again, try reading the TSB.

No Johnny, its called proof, I have it, you don't, and all you have left is bluster, innuendo, personal attack and bullshit.

Reply to
Max Dodge

Max Dodge wrote in meesage:

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Kunkles right......

yer wrong.

Fact, not Fiction.

Max, The proof IS NOT in the link you 2 are referring to. Maybe you should take the time diagnose the wording of the link with a non-biased approach. Take it for what it's stating and not what you want it to state. No where in the wording does it state that TCC applies in 3rd gear when the OD function is enabled. No where! And...that's the claim your making. That the link IS somehow supporting your statement that TCC applies in 3rd gear no matter what mode the buttton is commanding. Read the link with an open mind Max, because the wording is not there to support your claim.

Now....... as to your gracious offer for a test ride to prove that your truck does apply th TCC no matter what mode the button is commanding......I'd love to take you up on it but it's a monetary thing you know. Me being in Florida and all...having bills to pay..limited income...kids...$950 a month house nut........well you get the picture. If your truck IS locking up in 3rd gear regardless of what position the mode button is commanding..I'd suggest you concern yourself with the fact that it's highly possible something is amiss. You can perform googles till yer eyeballs glaze over and your NEVER going to find ANYTHING to support your claim that the workings of how you state your truck applies the TCC is factory programmed shift strategy from Dodge. Nothing!!

However, If you subscribe to ATRA, TrNI, AllData, or MOD, you WILL find documented factual evidence to support Kunkles statements that TCC will not apply on a properly functioning tranny system in 3rd gear when the mode button is set to allow OD. Fact~not Fiction!!

Refer back to the above reference of Goolgling............ if you'll spend some time trying to reinforce your statements by searching the tranny type by nomenclature and symptom, you're going to run across sites that will explain why the heat generation during TCC apply is a major problem with this "family" of trannies. Dodge did not program TCC apply on 3rd gear with the mode set for OD, for a specific reason. The more often the convertor slips the more heat is generated and the faster the unit is going to fail. This tranny was NOT designed to last, was NOT designed to perform in the applications we're discussing, but was designed to meet Federal guidelines for fuel efficiency. Which it does. But, it's also the weakest linkk in Dodge's CD applications. That's Fact~not Fiction. TCC apply in 3rd gear with an anticipated next shift into OD on CD that's going to basically "stack shift" from the factory on light to medium throttle accelleration is NOT going to happen because of factory programming, because DODGE....didn't want the extra heat being generated, didn't want the engine to lug, and NEVER programmed it in. You can harp on all you want to about your particuler vehical. But the fact of the matter is you've already stated in open forum that YOU are going by what YOU are feeling. I suggest you go to a tranny shop, get a FREE scan job on the system, and ride with the Tech. You WILL then see that your claims are disproven. FACT...not FICTION.!

Now...... as a final plea to get you to do your homework (google)................ I refer you to the glutunous availability of after market add-ons that are designed to apply TCC, when you want it.

again, go for that free scan job and ride with the tranny tech. My Modis, my Solus, My Mt2500......will all hook to a printer and spit out freeze frame data and "event logs". So will theirs. I let folks ride with me and look at data all the time. No prob. Worst case scenario...??... you'll then be able to post factuall evidence to support your claim and show me and Kunkle to be stupid. Wouldn't that be fun.?!!

lastly.............. and a bit off topic..........

I'd bet my job on me being right. Fact, not Fiction!! (you hear that FM..?!!!!!!!!)

^ ^ o o L O

~:~ Marsh ~sips his crownroyal~ ~:~

Reply to
Marsh Monster

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