Chirping sound while driving?

**Roverfire** · 03-05-2009, 12:16 AM

My 99 DII has a chirping sound that I can hear coming from somewhere outside the vehicle. It is speed related and is driving me nuts. I tried putting the vehicle on jack stands to replicate the noise but had no luck. The noise is there when the vehicle is on the ground. I made sure all my u-joints and drive lines were greased. Any ideas?

**rmuller** · 03-05-2009, 12:21 AM

my truck chirped when my front driveshaft was on its way out... the metal was deteriorating...

**DiscoJen** · 03-05-2009, 12:23 AM

Double ditto, chirping is a very description of one preparing to take a huge poo. Mine sounded just like that and I barely realized what the noise was before the u-joint exploded.

**Roverfire** · 03-05-2009, 12:27 AM

I hope that's not it. I just had it rebuilt less than 10k ago. What's the best way to test it. I grease it during every oil change.

**WNYDiscoIIErik** · 03-05-2009, 12:33 AM

When you had it rebuilt, did they replace the stock u-joints with serviceable??

By chance is the heater on when you have these sounds?

**StreetWolf** · 03-05-2009, 12:35 AM

Driveshaft was going out on mine when I had the problem.

Sound like this?
http://videos.streetfire.net/video/L...eak_151944.htm

**MUSKYMAN** · 03-05-2009, 12:42 AM

Quote:

Originally Posted by Roverfire

I hope that's not it. I just had it rebuilt less than 10k ago. What's the best way to test it. I grease it during every oil change.

who did the rebuild?

I have seen brand new u-joints go bad in no time because the person that replaced them damaged the bearings when replacing the u-joint.

**Roverfire** · 03-05-2009, 12:53 AM

I had a drive line shop replace them. Also they were the serviceable ones. I also used the Neapco joints.

**MUSKYMAN** · 03-05-2009, 01:00 AM

I would have them look it over right away...even a guy that does it alot can mess one up from time to time.

worst case you eliminate the chance for the catostrophic failure

**DISCODOWN** · 03-05-2009, 01:23 AM

Most likely the ujoint my vote as well BUT idler,altenator and water pumps bearing can let out the chirp too.........put a long screwdriver on em and listen at idle just to be sure and wheel bearings can chirp....THEN... as MUSKYMAN has graciously and nicely suggested others in the past...take a step back and kick yourself in the balls...........................[sorry MUSKYMAN but just had to add that]

**Roverfire** · 03-05-2009, 01:26 AM

Can I pull the front drive line out and drive it to see if it eliminates the noise?

**Slappy** · 03-05-2009, 01:29 AM

Quote:

Originally Posted by Roverfire

Can I pull the front drive line out and drive it to see if it eliminates the noise?

Yes, just lock the CDL and you'll be fine. Rear wheel drive!

**Roverfire** · 03-06-2009, 08:26 PM

So I pulled the front driveline and drove it around. The noise went away. I called the driveline shop that rebuilt it and they had me bring it out to them. They said everything looked fine but wanted me to leave it with them for awhile. When I went to pick it up they said they greased it up and rechecked everything. They thought that one of the caps was starting to go dry and that what was causing the chirping noise. I reinstalled it and the noise is gone

I guess I need to pay more attention next time I grease it. They mentioned that sometimes the grease isn't distributed evenly and to make sure that it is coming out all of the caps when greasing it.

**DISCODOWN** · 03-07-2009, 05:40 PM

If it was dry enough to be squeaking [metal to metal]....it was very likely damaged...not cheap to find out....change it!

03-05-2009, 12:16 AM	#1
Roverfire Member Join Date: Jan 2005 Location: Casper,WY Posts: 419	Chirping sound while driving? My 99 DII has a chirping sound that I can hear coming from somewhere outside the vehicle. It is speed related and is driving me nuts. I tried putting the vehicle on jack stands to replicate the noise but had no luck. The noise is there when the vehicle is on the ground. I made sure all my u-joints and drive lines were greased. Any ideas? __________________ 99' DII 2" RTE w/SLS spacers 04' CDL

03-05-2009, 12:21 AM	#2
rmuller Member Join Date: Apr 2004 Location: Northern NJ Posts: 4,272	Re: Chirping sound while driving? my truck chirped when my front driveshaft was on its way out... the metal was deteriorating... __________________ Ryan 2001 Discovery 2 2006 LR3 HSE7 1994 Defender 90 #416 (Gone)

03-05-2009, 12:23 AM	#3
DiscoJen Member Join Date: Aug 2004 Location: The Lou! Posts: 2,857	Re: Chirping sound while driving? Double ditto, chirping is a very description of one preparing to take a huge poo. Mine sounded just like that and I barely realized what the noise was before the u-joint exploded. __________________ --97 SE7 Dyscovery aka "Crazy Cooter"-- Love her, I'm keeping her --66 Series IIa 24volt ex-MoD FFR aka "Sir Alfred"

03-05-2009, 12:27 AM	#4
Roverfire Member Join Date: Jan 2005 Location: Casper,WY Posts: 419	Re: Chirping sound while driving? I hope that's not it. I just had it rebuilt less than 10k ago. What's the best way to test it. I grease it during every oil change. __________________ 99' DII 2" RTE w/SLS spacers 04' CDL

03-05-2009, 12:33 AM	#5
WNYDiscoIIErik Member Join Date: Jan 2006 Location: Orchard Park, NY Posts: 2,877	Re: Chirping sound while driving? When you had it rebuilt, did they replace the stock u-joints with serviceable?? By chance is the heater on when you have these sounds? __________________ www.lucky8llc.com

03-05-2009, 12:35 AM	#6
StreetWolf Member Join Date: Jan 2008 Location: Wichita Falls, Texas Posts: 358	Re: Chirping sound while driving? Driveshaft was going out on mine when I had the problem. Sound like this? http://videos.streetfire.net/video/L...eak_151944.htm __________________ *"You only live once, might as well die living" -Myself*

03-05-2009, 12:53 AM	#8
Roverfire Member Join Date: Jan 2005 Location: Casper,WY Posts: 419	Re: Chirping sound while driving? I had a drive line shop replace them. Also they were the serviceable ones. I also used the Neapco joints. __________________ 99' DII 2" RTE w/SLS spacers 04' CDL

03-05-2009, 01:00 AM	#9
MUSKYMAN Member Join Date: Apr 2004 Location: OverBarrington IL Posts: 7,817	Re: Chirping sound while driving? I would have them look it over right away...even a guy that does it alot can mess one up from time to time. worst case you eliminate the chance for the catostrophic failure __________________ "The history of time shows us that depopulation,social disruption,extinctions,disease and catastrophic droughts take place in cold times and life blossoms and economies boom in warm times" So I ask...why would global warming be bad?

03-05-2009, 01:23 AM	#10
DISCODOWN Member Join Date: Dec 2007 Location: JENNINGS FLORIDA Posts: 243	Re: Chirping sound while driving? Most likely the ujoint my vote as well BUT idler,altenator and water pumps bearing can let out the chirp too.........put a long screwdriver on em and listen at idle just to be sure and wheel bearings can chirp....THEN... as MUSKYMAN has graciously and nicely suggested others in the past...take a step back and kick yourself in the balls...........................[sorry MUSKYMAN but just had to add that]

03-05-2009, 01:26 AM	#11
Roverfire Member Join Date: Jan 2005 Location: Casper,WY Posts: 419	Re: Chirping sound while driving? Can I pull the front drive line out and drive it to see if it eliminates the noise? __________________ 99' DII 2" RTE w/SLS spacers 04' CDL

03-06-2009, 08:26 PM	#13
Roverfire Member Join Date: Jan 2005 Location: Casper,WY Posts: 419	Re: Chirping sound while driving? So I pulled the front driveline and drove it around. The noise went away. I called the driveline shop that rebuilt it and they had me bring it out to them. They said everything looked fine but wanted me to leave it with them for awhile. When I went to pick it up they said they greased it up and rechecked everything. They thought that one of the caps was starting to go dry and that what was causing the chirping noise. I reinstalled it and the noise is gone I guess I need to pay more attention next time I grease it. They mentioned that sometimes the grease isn't distributed evenly and to make sure that it is coming out all of the caps when greasing it. __________________ 99' DII 2" RTE w/SLS spacers 04' CDL

03-07-2009, 05:40 PM	#14
DISCODOWN Member Join Date: Dec 2007 Location: JENNINGS FLORIDA Posts: 243	Re: Chirping sound while driving? If it was dry enough to be squeaking [metal to metal]....it was very likely damaged...not cheap to find out....change it!

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