- #778 of 1274
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Re: 2001 Ram 2500 4x4, No Lock-up [crangel]
by dustyk
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Jan 04, 2009 (9:23 am)
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Replying to: crangel (Jan 03, 2009 7:34 pm)
Does the transmission always go through 1-2, 2-3, 3-4 shift sequence in normal driving?
Regards,
Dusty
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- #779 of 1274
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Re: 02 2500 wont stay in lock up TC [dustyk]
by git_r_done02
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Jan 04, 2009 (11:47 am)
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Replying to: dustyk (Jan 03, 2009 10:15 am)
Ya bud im not really sure what tranny it has but its a 24 valve cummins and its got about 166k on it with about 30k on the tranny rebuild. And since the rebuild I haven't towed much of anything. Before the rebuild I towed stuff all the time but I try to take it easy now.
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- #780 of 1274
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Re: 2001 Ram 2500 4x4, No Lock-up [dustyk]
by crangel
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Jan 04, 2009 (11:58 am)
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Replying to: dustyk (Jan 04, 2009 9:23 am)
Ya. Normal shifts, the O/D still works. It can be turned on & off. Just no lock-up.
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- #781 of 1274
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Re: 02 2500 wont stay in lock up TC [git_r_done02]
by dustyk
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Jan 04, 2009 (12:24 pm)
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Replying to: git_r_done02 (Jan 02, 2009 5:01 pm)
To be honest with you I would not be suspecting the transmission just yet.
On 47REs the operation of the torque converter clutch is initiated by the Power Train Control Module (PCM) and very dependent on engine performance, load conditions, and driver input.
It would be very helpful to have a trouble code, which is accessible by the operator.
I would recommend checking the Throttle Position Lever that's mounted on the transmission for sticking or binding, or a broken or missing return spring. This problem can also be caused by an out-of-adjustment throttle cable. A bad Throttle Position Sensor can also cause this problem. Lastly, converter lock-up problems can be the result of poor engine performance.
Regards,
Dusty
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- #782 of 1274
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Re: 2001 Ram 2500 4x4, No Lock-up [crangel]
by dustyk
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Jan 04, 2009 (1:10 pm)
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Replying to: crangel (Jan 04, 2009 11:58 am)
Possibilities:
*Throttle Valve Lever on transmission stuck or binding, or cable kinked, damaged or binding.
*Throttle linkage sticking/binding.
*O/D switch circuit inoperative or switch defective.
*Engine not coming to full operating temperature, or defective Transmission Temperature Sensor.
*Transmission Valve Body - Low/Reverse Solenoid accumulator or switch valves sticking or leaking pressure, warped valve body or leaky separator plate; dirty valve body.
*Weak or defective TCC Solenoid.
*Worn Torque Converter Clutch.
*Bad PCM.
Regards,
Dusty
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- #783 of 1274
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Re: 2001 Ram 2500 4x4, No Lock-up [dustyk]
by crangel
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Jan 04, 2009 (2:21 pm)
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Replying to: dustyk (Jan 04, 2009 1:10 pm)
Thanks Dusty
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- #784 of 1274
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Re: 1998 RAM 24 valve won't stay in lock-up [dustyk]
by Newtomopar
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Jan 04, 2009 (2:56 pm)
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Replying to: dustyk (Jan 04, 2009 9:13 am)
I have 6000 miles on a brand new tranny, shifts fine through 1,2,3 and overdrive until I keep it at a consistent speed (from 45-65). Then the tranny constantly shifts between 3rd and 4th. I just bought a tps because the dealer and checker diagnosed that to be the problem but it did not help.
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- #785 of 1274
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Re: 1998 RAM 24 valve won't stay in lock-up [Newtomopar]
by dustyk
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Jan 04, 2009 (5:11 pm)
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Replying to: Newtomopar (Jan 04, 2009 2:56 pm)
Assuming that the work on the transmission was competently performed, I would strongly suspect that the Throttle Valve cable and/or throttle linkage is out of adjustment. This adjustment is quite sensitive and should be done exactly per the service manual.
Regards,
Dusty
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- #786 of 1274
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Re: 1998 RAM 24 valve won't stay in lock-up [dustyk]
by Newtomopar
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Jan 04, 2009 (5:44 pm)
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Replying to: dustyk (Jan 04, 2009 5:11 pm)
Thank you Dusty, judging by the rest of you post's, you really sound like you know these things well. I will take a look at everything and let you know!
Thanks,
Dustin
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- #787 of 1274
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Re: 02 2500 wont stay in lock up TC [dustyk]
by git_r_done02
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Jan 04, 2009 (6:01 pm)
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Replying to: dustyk (Jan 04, 2009 12:24 pm)
Alright well like I said I had the tranny went through last year and a new TC when it went back in. And I got the Chrsyler parts #'s of what I replaced a couple of days ago that didn't change anything. #4617210 solenoid, 52118500-AB solenoid, and 56028196-AD transducer. I dont know if that will help you any or not. And as far as the engine performance of the truck, there's nothing happening there. The engine is real strong and does great, I got a couple of performance upgrades on it- an Edge EZ chip and a K&N cold air intake but other than that its stock. And on the TPS it was replaced about a year and a half ago, so I would hope its still good. I dont know about the Throttle Position Lever or the spring on it. So man if ya got any other ideas let me know. I really appreciate the info so far.
Thanks Nick R.
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