help with squealing/grinding driveline?

Does your Mitsubishi L300 make a strange noise? Need wheel alignment specs?
Post Reply
User avatar
snelson
Posts: 406
Joined: Sat Jan 26, 2008 6:29 pm
Member's Photo Album: http://www.delica.ca/Photos/
Vehicle: 92 Delica Exceed
Location: Banff
Location: Banff, Alberta

help with squealing/grinding driveline?

Post by snelson » Mon Jan 12, 2009 2:53 pm

Hi again all. I posted here a while back about what I thought was a squealing sound caused from shifting into 4X4 on the fly. But I think the squeel must be something else.
It's happening in either 4H or 4L.
I was just hoping that perhaps the group could give me some suggestions on what it could be.
The toughest part is that it's intermittant, so hard to bring into a shop when it's not a constant sound.

So - it's a high pitched squeely sound, sometimes metallic grindy sound
Is not effected by engine speed
Is not effected when I use the brakes
It's a pulsating sound, so squeaks as something is turning but I can't determine if its wheel spin or driveshaft
Sound is there in 4H and 2H
The sound comes and goes - arrrgh
There's no clunk when starting or shifting from P to D
It's not a sound coming from the engine, only hear it whe the tires or driveshaft is moving/spinning.

Any ideas at all? Its so tough when its intermittent but its to the point now that I'm tense driving all the time cause I don't know if its something serious/critical - or just something small.
Any suggestions much appreciated guys
Thanks
Steve
Last edited by snelson on Tue Jan 13, 2009 8:37 am, edited 1 time in total.

Sabb
Posts: 2
Joined: Fri Apr 11, 2008 9:29 pm

Re: help with squealing/grinding driveline?

Post by Sabb » Mon Jan 12, 2009 9:03 pm

Absolutely no expertise, but it sounds a lot like a seized wheel bearing I had in another vehicle--the intermittent squeal grew more regular, as I did more damage (hub, rotors etc) Can you localise it to one corner of the van?

Sabb

quadzilla
Posts: 236
Joined: Tue Dec 18, 2007 8:18 pm
Vehicle: 1992 Exceed

Re: help with squealing/grinding driveline?

Post by quadzilla » Mon Jan 12, 2009 9:34 pm

snelson - I was having a similar problem while driving / accelerating. See http://www.delica.ca/forum/strange-sound-4192.html

Recently learned that the turbo bearing is hitting the impeller under acceleration. This may be your problem as well. Some other good suggestions in the post as well.

Good luck.

User avatar
CVI
Posts: 175
Joined: Mon Dec 03, 2007 12:01 pm
Member's Photo Album: http://cviauto.com
Vehicle: 1994 Delica Space Gear Royal Exceed
Location: Richmond, BC
Contact:

Re: help with squealing/grinding driveline?

Post by CVI » Mon Jan 12, 2009 11:43 pm

Maybe you've checked this already but....check the front brake pads. They have a sensor that squeals irritably when the pads are low. And will be intermittent if the sensor just touched the rotors. It's a steady squeal irregardless of speed. Just a quick check before anything else.
CVI Automotive
JDM & Imported Vehicles Specialist
104-2353 Peardonville Road Abbotsford BC V2T 6J7
Phone: 604.710.7000 email: ati@atigroup.com.ph
Web: cviauto.com

User avatar
snelson
Posts: 406
Joined: Sat Jan 26, 2008 6:29 pm
Member's Photo Album: http://www.delica.ca/Photos/
Vehicle: 92 Delica Exceed
Location: Banff
Location: Banff, Alberta

Re: help with squealing/grinding driveline?

Post by snelson » Tue Jan 13, 2009 8:45 am

Thanks for the suggestions so far guys.

Hubs - I'm going to replace the hubs with manual ones, so I'll see if this cures it.

Turbo - I don't think it would be the turbo, I can rev the engine in park or neutral all day long and can't replicate the sound. But the minute I start to move, I hear the squeal/grind.

Brake Pads - This could be it too, but does the brake sensor sound go away when you engage the brakes? My sound is still there when riding the brakes. Can't define exactly where the sound is, I've walked along side while the wife slowly drove, but sounds like it's coming mid cabin.

One other possibility from Quadzilla's post - universal joints. Do these squeel/gind though? I thought they really just made a clunk when shifting into drive....?

Thanks again guys, would love to hear any other possibilities...
Steve

User avatar
Golf Cart
Posts: 857
Joined: Tue Jul 15, 2008 10:57 pm
Member's Photo Album: http://www.delica.ca/Photos/
Vehicle: 1992 Exceed
Location: Maple Ridge

Re: help with squealing/grinding driveline?

Post by Golf Cart » Tue Jan 13, 2009 9:31 am

snelson wrote: Turbo

One other possibility from Quadzilla's post - universal joints. Do these squeel/gind though? I thought they really just made a clunk when shifting into drive....?
If the U-joints have dried up they will chirp. If the U's havent been serviced ( re-greased ) on a semi regular basis, they will dry up. Submerging in water is another culprit. Water gets into the cup and sits there, and will slowly rust out the needle bearings. The needle bearings will rust until they develope a flat spot and will stop rolling. I've found this out on my Ford. The front U's on my 4x4 were the culprit. Give the main U's 3 or 4 shots of grease and see if it shuts the noise up, or at least quietens the noise up.

Good Luck
By the time you realize that my signature has no real message or life altering words of wisdom, you're too far into it to stop reading until you are finished

Post Reply

Return to “L300 Technical”