Edmunds.com | Inside Line | Auto Observer Your Account | Help | Directory
You are here:
![[F]](http://a332.g.akamai.net/f/332/936/12h/www.edmunds.com/media/townhall/webxicons/site.gif){kind=small}
Forums
Pickups Dodge Ram Dodge Ram Transmission Problems
1274 messages, Last post on Nov 21, 2009 at 4:42 AM
You are in the Dodge Ram Forum. Your Host is kcram
Our 2007 Ram 3500 has the 6.7 Cummins with the 6-speed auto trans. Great trans, but I'm worried it won't last. We tow a heavy 5th wheel RV (17,000 lbs). On the highway, the trans works perfectly. However, on one grade inside the RV park where we spend part of every summer, we have to tow up a 15% grade. I lock the trans in first gear before going up the grade, and the engine charges up the grade with ease. But the trans rumbles and causes a serious vibration in the whole vehicle. When we get to the top of the grade, no more than 100 yards, the temp gauge on the trans has gone from its normal 150 range to 200. Any ideas what's going on? Solutions?
|
|
|
Replying to: dustyk (Dec 29, 2008 8:20 pm) |
|
|
Replying to: sailor12 (Dec 30, 2008 4:53 pm) Can you tell if the engine temperature went up as well, or is the only indication that the transmission temperature increased? Technically, at 200 degrees F the transmission fluid temperature is still within the normal operating range, so I'm not sure this is really a problem. If the engine temperature climbs as well, I'd be prone to think the engine temperature is affecting the transmission fluid temperature through the transmission cooler in the radiator, not necessarily the other way around. But hard to say with factory gauges, and I make it a point to stay away from diesels. I am not intimately familiar with the 68RE transmission. Our Dodge tech. has never had one apart, either. However, I believe there are computer updates for this transmission since 2007. I would recommend you consult a Dodge transmission technician and review this situation with them. The temperature would not alarm me since its within operating range, but the vibration is something else and should be checked. It could be excessive torque converter shutter, especially since the torque converter is not locked when in manual 1st gear. You didn't indicate how many miles on this vehicle, but it may be possible the friction modifier component in the transmission fluid has expended and the fluid needs to be changed. Like any Chrysler-built transmission, the 68RE requires ATF+4, but this one is even more sensitive to the correct fluid. Please don't let anyone talk you into using anything else! Sorry I'm not much help on this one. Best regards, Dusty
|
|
|
Replying to: dustyk (Dec 30, 2008 5:26 pm) Thanks for your reply. You clearly know more about the 68RE than I do. We bought the truck new in 2007, and it only has 13,000 miles on it. I have consulted three dealership diesel mechanics on this issue--Folsom Lake Dodge (Sacramento), Ron Sayer Dodge (Idaho Falls), and Lithia Dodge (Eugene, OR), but they couldn't or wouldn't do any more than put in new codes. When the trans temp goes up, the engine temp does not. I had after market gauges installed so I could monitor trans temp, exhaust temp, and boost. (Having driven big rig for years, I want to know what's getting too hot.) I lock the trans in 1st gear because the trans appeared to slip on the grade in question otherwise. Is it not a good idea to lock it in 1st? Is torque converter shudder bad? The most knowledgeable of the Dodge mechanics I spoke with said the shudder wouldn't hurt the trans. True or telling me to go away? Thanks again, Bob |
|
| mag. runs and drives wont go to park check fluid and linkage trannie works all other gears and shifts fine exept from1>2 takes a little longer not sure what to do any suggestions would be great, thanks | |
|
Replying to: dlgldx (Jan 02, 2009 1:21 pm) Get the vehicle on a flat, level surface and make sure the vehicle cannot roll more than an inch in either direction. I would recommend checking the shift lever on the transmission case to see if it can move into the park position by hand. If it can't, I suspect there is a problem with the pawl (either its bent or there is a burr on it) or the gearshift linkage is out of adjustment, preventing the shift lever on the transmission enough movement to engage the parking pawl. I suspect the latter. Regards, Dusty
|
|
|
|
MY 02 2500 4x4 wont stay in lock up torque converter. The truck shifts fine through all the gears until you get up to 45mph when the TC tries to lock up it kust goes in and out. But once you get on up tp speed for highway driving like 65mph or more its fine. And it doesn't matter if its OD or not it will do the same thing with the OD off but at a slower speed like around 35mph or so. We already pulled the pan and changed all the electronics around the valve body but its still doing the same thing. So how about some help someone, my ears are open! Thanks
|
|
|
|
|
Replying to: git_r_done02 (Jan 02, 2009 5:01 pm)
|
|
|
Replying to: dustyk (Jan 02, 2009 1:44 pm) thanks-dusty, dlgldx |
|
|
Replying to: git_r_done02 (Jan 02, 2009 5:01 pm) Regards, Dusty
|
|
You are here:
Forums
Pickups Dodge Ram Dodge Ram Transmission Problems
New? Join Now!
Forum Tools
Search Forums
Browse by Vehicle
2009 Dodge Ram Pickup 1500
2009 Dodge Ram Pickup 2500
2009 Dodge Ram Pickup 3500
Browse by Board
Browse by Topic
Today's Chats
