Last post on Jun 18, 2010 at 2:34 PM
You are in the Dodge Dakota-2010 and older
What is this discussion about?
Dodge Dakota, Suspension, Truck
#48 of 51 Re: whinning/grinding [eddie79]
Jun 17, 2010 (2:19 pm)
P.S. It only has 86,xxx miles
#49 of 51 Re: whinning/grinding [eddie79]
Jun 17, 2010 (9:29 pm)
i posted an inquiry like yours years ago, and nobody has a die hard remedy. while it was under warranty, i had the ring and pinion gears in my 2003 Dakota (4x4, 4.8L, 9.25 rear) changed out three times... the problem was briefly silenced, but 2k mi later, more obnoxious banshee wailing. as long as you make sure to keep your diff fluid changed at the proper intervals, check often for water invasion (if your diff ingests water, the gear oil will be a nasty, grey milk with the consistency of pottery slip), you're good to go. there are no less than 5 reasons the diff starts to make that damn noise - drive axle-to-diff yoke connection angle is off (a bitch to set properly), ring/pinion gear offset not 100% correct (another bitch to set properly), diff fluid degraded (if you tow a lot or hard launch often), diff full of water (if you wash your undercarriage vigourously or drive through flooded streets), diff fluid level incorrect (check vehicle manual for proper spec) - and, unless you find a whole lot of metal flakes or bits stuck in the diff when you do a fluid change or notice grinding/slipping/banging from that end of your truck, you're fine. Apparently, there's even a TSB floating out there that states "if technician can turn up the radio to a sensible level and drown out the whining, no service required." The Chrysler 9.25 is a really solid piece of hardware, and the 8.25 isn't far behind. Yes, you could be OCD about this and have a reputable mechanic check everything listed above, but, to be brutally frank, it's just a Dodge that sings under load at 40-55 mph. I agree that this is a retarded problem to have to put up with, but you're in no real danger of a costly repair as a general rule. hope that helps in spite of the grin and bear it reality of German-American engineering (thanks a lot, Dr. Z)...
#50 of 51 Re: whinning/grinding [fawlrud]
Jun 18, 2010 (6:27 am)
Ha!! It's funny you mentioned turning up the radio. My wife told me to do that. The fluid will be the first thing I check. I crawled under it yesterday and noticed off the bat that there's a leak coming from behind the propeller joint. It's not enough of a leak that it's "pouring" out, but enough to make me want to check it out. And I don't have the symptoms you mentioned about the slipping and banging. In fact, it shifts just fine. I don't tow hardly anything other than my boat, which is just a 14 1/2 ft. john boat. I wouln't think that the 'kota couldn't handle that. I appreciate your insight. Thanks!
#51 of 51 Re: whinning/grinding [eddie79]
Jun 18, 2010 (2:34 pm)
At 45k mi, i also had a leak between the prop U-joint and diff housing. Exactly the same as what you described. Chrysler paid to fix that - extended warranty paid for itself several times. Again, not a serious issue, and it may be leaking because of gear oil overfilling. There's a digital version of the early 2000s Ram factory technician's manual floating around online (almost all specs are identical to Dakota). Greatest free download ever, especially if you're handy at mechanic's work.