98 durango with a 318.
nothing fancy.
i just use it for winter driving and occasional trailer hauling.
it has 118,000 miles.

a couple weeks ago i was hauling home my aunts blazer that broke down.
the next day i stated up the rango and it was making a buzzing kinda sound in the trans.
i was checking it out a bit today and it seems that the sound is comming from in the bell housing.
it only makes the buzzing sound when in park or when shifting between neutral and reverse.
its usually pretty loud but gets really loud at times.
the rango still runs and drives just fine, but im wanting to get the to figure out when the problem is so i can fix it.

this truck has been great for me since i bought it 5 years ago. only ever had to replace a water pump, brake caliper, and a break line. plus it pulls like a tank so i would hate to just get rid of it.

any help?
thanks
__________________

 

master tech will have something for you, and ill move this to first gen section so you get more views

 

Did you check the trans fluid? Maybe the transfer cases need filling up? When was the last time you had the tranny bands adjusted? Just my 0.02.

 

yes ive checked the fluid and its fine.
never messed with the bands....

the noise appears to be comming from inside the bell housing.....
if you touch the inspection cover, then you can fell it vibrating to the buzzing sound..

the truck drives just like new....no stuttering, dying, sputtering, surging, or anything....it just has the buzzing/vibrating sound when in park

 

Check the flex plate bolts to the torque converter. They my be loose.

 

Kinda sounds like a torque converter issue? PM master tech https://dodgeforum.com/forum/members...ster-tech.html

 

NO: 21-08-99
SUBJECT: "Buzz", "Whining", Or "Moaning" Like Noise From A Cold Transmission When Reverse Is Selected.
DATE: April 30, 1999
OVERVIEW:
This bulletin involves replacing the transmission regulator valve.

NOTE: THIS INFORMATION APPLIES TO VEHICLES EQUIPPED WITH A RE OR RH AUTOMATIC TRANSMISSION.

SYMPTOM/CONDITION:
Some vehicles may exhibit an intermittent noise from the transmission when reverse gear is selected. This noise has been described as a "buzz", whining", or "moaning" like noise. The noise is most noticeable when transmission fluid temperature is below 38 C. (100 F.). The condition is caused by a resonance of the transmission regulator valve system.

Other items may cause regulator valve resonance, including air ingestion into the valve body or out of specification parts. These two items may be the result a possible cracked pump housing, a torn pump gasket, an under filled transmission, a restricted fluid filter or cooler flow, or an out of specification valve and/or valve body. You should remember these additional items / components when you perform your diagnosis.

Vehicles built prior to August 1, 1995 may experience this condition if either a transmission valve body or an entire automatic transmission was replaced with components manufactured after August 1, 1995.

DIAGNOSIS:
Using the Diagnostic Scan Tool (DRB III®) with the appropriate Diagnostics Procedure Manual, verify all engine and transmission systems are functioning as designed. If Diagnostic Trouble Codes (DTC’s) are present, record them on the repair order and repair as necessary before proceeding further with this bulletin.

For 1996 and 1997 model year product, review Technical Service Bulletin 21-11-97 Rev A to determine if it applies to this vehicle before attempting to complete the analysis or repairs described in this bulletin.

In most instances, the sump temperature of vehicles exhibiting transmission regulator valve resonance in reverse has been less than 38 C. (100 F). If possible, allow the suspect vehicle to remain parked in a cool place overnight. Then perform the following steps:

Set the vehicle parking brake.
Start the engine (make certain windows are closed, to eliminate outside noise).
With brakes applied, place the transmission selector lever in reverse.
Listen for any buzz/moaning/whining like noises as the transmission sump temperature rises to normal operating temperature (180 – 210 degrees F).
If a buzz/moaning/whining like noise is present, perform the Repair Procedure.
PARTS REQUIRED:
Qty Part No. Description
1 04130169 Valve Steel Transmission Regulator
1 02464324 Gasket, Transmission Pan
AR 05010124AA Fluid, ATF Plus 3, Type 7176E


EQUIPMENT REQUIRED:
Qty Part No. Description
1 C-3763 Gauge Tool, Throttle Pressure Adjustment


REPAIR PROCEDURE:
Following the procedures in the applicable service manual, remove the valve body from the transmission (Refer to Group 21 of the appropriate Service Manual – TRANSMISSION AND TRANSFER CASE – AUTOMATIC TRANSMISSION section - REMOVAL AND INSTALLATION).
Remove the screws holding the adjusting screw bracket and replace the regulator valve with p/n 04130169 (Figure 1). Install the adjusting screw bracket
Verify and adjust, if necessary, both the line pressure and the throttle pressure settings by following the procedures in the service manual (Refer to Group 21 of the appropriate Service Manual –TRANSMISSION AND TRANSFER CASE – AUTOMATIC TRANSMISSIONsection – ADJUSTMENTS – VALVE BODY).
Following the procedures in the appropriate Service Manual, re-install the valve body with the new regulator valve into the transmission.
After filling the transmission with the proper automatic transmission fluid, and verifying correct fill level, check the throttle valve cable adjustment. Make appropriate adjustments, if necessary, following the applicable service manual procedure (Refer to Group 21 of the appropriate Service Manual –TRANSMISSION AND TRANSFER CASE – AUTOMATIC TRANSMISSION section – ADJUSTMENTS – TRANSMISSION THROTTLE VALVE CABLE ADJUSTMENT).

I don't if this is what you are looking for.But like hydrashocker said torque converter or pump.

 

Oh yea and the master has spoken!.....

 

it makes the buzzing sound all the time regardless of the trans being cold or if you were driving it on a 10 hour trip.....
it also only really does it in park......no other gears

an old mechanic that i work with said that maybe the flex plate could be cracked....could this be a possibility?

i would just hate to get a new torque convertor and find out that it isnt the problem...

this just sux

 

Sure it could be cracked,But you may would want ck the torque converter bolts first. Are you getting a crank sensor fault code?