Jump to content
Mopar1973Man.Com LLC

  • Welcome To Mopar1973Man.Com LLC

    We are a privately owned support forum for the Dodge Ram Cummins Diesels. All information is free to read for everyone. To interact or ask questions you must have a subscription plan to enable all other features beyond reading. Please go over to the Subscription Page and pick out a plan that fits you best. At any time you wish to cancel the subscription please go back over to the Subscription Page and hit the Cancel button and your subscription will be stopped. All subscriptions are auto-renewing. 

Gotta A Noise Happening

dorkweed

By dorkweed
in 3rd Generation Dodge

 Share

Recommended Posts

dorkweed

dorkweed

Posted
Posted

Front of truck...................cannot hear it in the cab...................all gauges and dash stuff read normally.

 

Sounds like an inconsistent rubbing/grinding.  The whole front end of my truck is OEM.  I'm thinking it could be alternator, fan clutch, water pump, idler pulley, belt tensioner pulley, or the power steering unit.

 

Anyone wanna take a guess or help a guy out as to where to start??

 

I'm gonna start by backing off the serpentine belt tensioner and then manually turning all the parts on the front end.  Hopefully I'll find the culprit by doing that.......

Link to comment
Share on other sites
Wild and Free

Wild and Free

Posted
Posted

I am assuming it is engine related versus drivetrain then since you want to remove the belt and check the rotating pieces, sounds like you got a good handle on where and how to start for now.

I have found it is usually one of 2 things, first is tensioner pulley can be either the pulley bearing and or the pivot I have found on my rigs numerous times goes bad and makes a lot of noise, second is water pump then I got to other things like alt ac comp fan hub ect.

  • Like 1
Link to comment
Share on other sites
  • Staff
JAG1

JAG1

Posted
  • Staff
Posted

Dork, this has happened to me many times on my 1st gen. Usually it is just the pulley running dry and or bearings going bad. For a test I usually put a small shot of oil in the tensioner pulley bearings, start the engine and it quits.

 

Hope this helps out.

  • Like 1
Link to comment
Share on other sites
  • Staff
JAG1

JAG1

Posted
  • Staff
Posted

You can change just the bearing and pulley. I takes a star type. If you change out the whole unit it costs quit a bit more. In about 400 k miles I've changed just the wheel and bearing twice now. It's good to put a drop of oil on it each year... doesn't hurt.

Link to comment
Share on other sites
dorkweed

dorkweed

Posted
  • Author
Posted

You can change just the bearing and pulley. I takes a star type. If you change out the whole unit it costs quit a bit more. In about 400 k miles I've changed just the wheel and bearing twice now. It's good to put a drop of oil on it each year... doesn't hurt.

 

 

Almost 217,000 miles and almost 10.5 years old now.........................nothing lasts any more!! :smart:  :shrug:

  • Like 1
Link to comment
Share on other sites
dorkweed

dorkweed

Posted
  • Author
Posted

OK guys;  I backed off the belt tensioner and slid the belt off of the AC pulley.  Checked/turned all the pulleys and guess what??????  A BIG FAT NOTHING!!!!  No grinding, wobbling, frozen pulleys at all on anything.  So I put the belt back on and put her all back together and turned the fan by hand in the direction it turns as if it were running.  Question here............should it spin freely????  Mine would turn but I couldn't spin it, and there was a slight squeak to it doing this.  What y'all think here??

Link to comment
Share on other sites
rancherman

rancherman

Posted
Posted (edited)

fire up the beast sans  the belt.   You'll know right away if it's  in that system.     If it's still  buzzing,  then you'll know it's  not part of the accessory drive

 

Check for  red dusty residue  at all the  bearings..  dry bearings will shed  rust  on the inner part of  those pulleys  that use them.

 

Can you  laterally  move the fan tip  very much?     Not sure on our specs,  but  most  fan movement should be less than  1/4 inch?

Your noise  come when  truck is hot, cold, no difference?

Edited by rancherman
Link to comment
Share on other sites
dorkweed

dorkweed

Posted
  • Author
Posted

fire up the beast sans  the belt.   You'll know right away if it's  in that system.     If it's still  buzzing,  then you'll know it's  not part of the accessory drive

 

Check for  red dusty residue  at all the  bearings..  dry bearings will shed  rust  on the inner part of  those pulleys  that use them.

 

Can you  laterally  move the fan tip  very much?     Not sure on our specs,  but  most  fan movement should be less than  1/4 inch?

Your noise  come when  truck is hot, cold, no difference?

 

 

Ran a few errands today.  The noise was there when I left................could hear it when I closed the garage door.  Upon getting home, I couldn't hear it opening the door.  But today is in the 50's outside.................during the week, it never got out of the teens or twenties, with lows in the single digits.............save for yesterday and now today.

 

Should the fan spin freely when spun by hand when the engine is cold???  Mine will turn, but it doesn't spin freely.  No codes either.

Link to comment
Share on other sites
dorkweed

dorkweed

Posted
  • Author
Posted

No noise at all today guys!!  As I said above, all my pulleys turn easily and have no wobble or deflection.  

 

Could my noise be the fluid within the fan clutch??  The noise was most noticeable during the real cold last week.........both at start up and after driving.................but I wasn't driving real far either, so maybe all my part never got fully "warmed up"??

Link to comment
Share on other sites
dorkweed

dorkweed

Posted
  • Author
Posted

When was the last time you changed the ATF in your power steering pump?

 

 

Power steering fluid could be... But typically it should whine when you pulling against the steering wouldn't it? But if it been quite some time I tend to agree with AH64ID and just say change it.

 

 

Will check guys..............It's been a while...................though steering feels fine.  Thanks!!

Link to comment
Share on other sites
  • Owner
Mopar1973Man

Mopar1973Man

Posted
  • Owner
Posted

Well even mine feels fine from year to year but I know if I don't change it every 30k miles it tend to whine in the cold of the winters. Just like engine oil the power steering fluid (or ATF in this case) has to lubricate the pump and parts and withstand heating and cooling of the fluid eventually it does break down and require changing.

  • Like 1
Link to comment
Share on other sites
 Share
Go to topic listing
×
×
  • Create New...