Strange noise from Indigo.

sajo · 6th May 2007, 09:37

My dad's Indigo is producing a strange gurgling+scraping noise, but produced in metal (ie, not produced by any sort of fluid, but noise is similar). It can also be thought of as the sound a big heavy metal ball would make while rolling on another metal surface.
When taken to the A.S.S. , they replaced the power steering oil pipe, and also checked the entire system for leakage. Also, a faulty engine C-Mount was replaced. The power steering belt tension was checked for noise too. We got the car back yesterday, and for the first 10 kms, the noise had gone. But then it was back with a vengeance, louder than it appeared to be earlier. The car is going in again to the dealers on Monday (we called him immediately after the problem reappeared)... any tips/pointers on what to check/look out for ?

deep_bang · 6th May 2007, 09:43

Just thinking if it is the brakes. Does the sound increase when applying brake? I do remember something similar happenning on my Ford Taurus, but the sound was only when applying the brake.

flipsyde · 6th May 2007, 09:45

i'm not too sure about this....... but when the rear wheel bearings on my M1000 packed up i ended up with similar noises. A sort of scraping/gurgling noise from the rear..... more prominent at higher speeds. Maybe you should ask them to check all 4 wheel bearings.

The gurus should be able help you out.

sajo · 6th May 2007, 10:03

Thanks for the suggestion flipsyde. But you mentioned noise being more prominent at high speeds. But in my case, the noise is very loud and prominent at low speeds. Especially in stop and go traffic with bad roads. (ie, all of Pune).

rohan_fonseca · 6th May 2007, 12:21

If the sound is from the front get your struts checked.

tsk1979 · 6th May 2007, 15:01

Does the noise change with engine revs?

sajo · 6th May 2007, 16:24

Quote:

Originally Posted by tsk1979

Does the noise change with engine revs?

No, it remains constant irrespective of the engine revs.

@Deep_bang : Even I thought it might be the brakes, but then, its not produced at any particular instance. ie, not even all bad roads can produce it.. but 90% of them do, and so does 60% smooth tarmac. Surprisingly, the car remained very well behaved at the service station.

Also, the engine seems to lift itself slightly, when the car is put into gear and moved forward. Is this normal behaviour?

tsk1979 · 6th May 2007, 22:57

One more question, does the noice come even when the car is not moving, i.e. just idling.
Is there any change in noise when AC is switched on etc.,
I am trying to figure out whether the noise is related to a part for which speed varies with respect to engine speed, or is it related to a part where the speed of the engine is not of any consequence.

sajo · 6th May 2007, 23:11

There is no noise during idling... also doesnt change when the AC is switched on or off. So I think its related to something for which the engine speed doesnt matter. Only motion does..and is more audible at low speeds. If I can, I will record the sound tomorrow and post it here.

Zappo · 7th May 2007, 00:49

Could it be something as simple as a mount coming loose and during motion scraping with some other body part, say wheels? Have you tried to bend down and inspect whether there is something that is hanging loose? Or maybe opened the bonnet and peered in to see if something loose is vibrating enough to make you suspect that it may start touching other parts during motion?

tsk1979 · 7th May 2007, 02:05

It most probably the silencer pipe. Indica/go exhaust pipes are tied by flimsy clamps which come off easily

sajo · 7th May 2007, 07:40

@Zappo : Been doing that every now and then. As I said in my first post, a suspect mount was replaced even.
Peering under the hood during idling reveals no loose or hanging parts, nor does the underbody.

deep_bang · 7th May 2007, 11:59

have you ruled out the possibility of bearings causing the problem?

6th May 2007, 09:37	#1
sajo Senior - BHPian Join Date: Apr 2005 Location: Pune Posts: 2,625 Thanked: 1,153 Times	Strange noise from Indigo. My dad's Indigo is producing a strange gurgling+scraping noise, but produced in metal (ie, not produced by any sort of fluid, but noise is similar). It can also be thought of as the sound a big heavy metal ball would make while rolling on another metal surface. When taken to the A.S.S. , they replaced the power steering oil pipe, and also checked the entire system for leakage. Also, a faulty engine C-Mount was replaced. The power steering belt tension was checked for noise too. We got the car back yesterday, and for the first 10 kms, the noise had gone. But then it was back with a vengeance, louder than it appeared to be earlier. The car is going in again to the dealers on Monday (we called him immediately after the problem reappeared)... any tips/pointers on what to check/look out for ?
	() Thanks

6th May 2007, 09:43	#2
deep_bang BHPian Join Date: Mar 2007 Location: Bangalore / Boise Posts: 888 Thanked: 1,270 Times	Just thinking if it is the brakes. Does the sound increase when applying brake? I do remember something similar happenning on my Ford Taurus, but the sound was only when applying the brake.
	() Thanks

6th May 2007, 09:45	#3
flipsyde BHPian Join Date: Nov 2006 Location: Chennai Posts: 644 Thanked: 84 Times	i'm not too sure about this....... but when the rear wheel bearings on my M1000 packed up i ended up with similar noises. A sort of scraping/gurgling noise from the rear..... more prominent at higher speeds. Maybe you should ask them to check all 4 wheel bearings. The gurus should be able help you out.
	() Thanks

6th May 2007, 10:03	#4
sajo Senior - BHPian Join Date: Apr 2005 Location: Pune Posts: 2,625 Thanked: 1,153 Times	Thanks for the suggestion flipsyde. But you mentioned noise being more prominent at high speeds. But in my case, the noise is very loud and prominent at low speeds. Especially in stop and go traffic with bad roads. (ie, all of Pune).
	() Thanks

6th May 2007, 12:21	#5
rohan_fonseca BHPian Join Date: Jan 2006 Location: Panaji Posts: 984 Thanked: 8 Times View My Garage	If the sound is from the front get your struts checked.
	() Thanks

6th May 2007, 15:01	#6
tsk1979 Team-BHP Support Join Date: Feb 2005 Location: San Jose, CA Posts: 23,717 Thanked: 22,825 Times View My Garage	Does the noise change with engine revs?
	() Thanks

6th May 2007, 22:57	#8
tsk1979 Team-BHP Support Join Date: Feb 2005 Location: San Jose, CA Posts: 23,717 Thanked: 22,825 Times View My Garage	One more question, does the noice come even when the car is not moving, i.e. just idling. Is there any change in noise when AC is switched on etc., I am trying to figure out whether the noise is related to a part for which speed varies with respect to engine speed, or is it related to a part where the speed of the engine is not of any consequence.
	() Thanks

6th May 2007, 23:11	#9
sajo Senior - BHPian Join Date: Apr 2005 Location: Pune Posts: 2,625 Thanked: 1,153 Times	There is no noise during idling... also doesnt change when the AC is switched on or off. So I think its related to something for which the engine speed doesnt matter. Only motion does..and is more audible at low speeds. If I can, I will record the sound tomorrow and post it here.
	() Thanks

7th May 2007, 00:49	#10
Zappo Team-BHP Support Join Date: Oct 2005 Location: Hyderabad Posts: 5,921 Thanked: 2,682 Times	Could it be something as simple as a mount coming loose and during motion scraping with some other body part, say wheels? Have you tried to bend down and inspect whether there is something that is hanging loose? Or maybe opened the bonnet and peered in to see if something loose is vibrating enough to make you suspect that it may start touching other parts during motion?
	() Thanks

7th May 2007, 02:05	#11
tsk1979 Team-BHP Support Join Date: Feb 2005 Location: San Jose, CA Posts: 23,717 Thanked: 22,825 Times View My Garage	It most probably the silencer pipe. Indica/go exhaust pipes are tied by flimsy clamps which come off easily
	() Thanks

7th May 2007, 07:40	#12
sajo Senior - BHPian Join Date: Apr 2005 Location: Pune Posts: 2,625 Thanked: 1,153 Times	@Zappo : Been doing that every now and then. As I said in my first post, a suspect mount was replaced even. Peering under the hood during idling reveals no loose or hanging parts, nor does the underbody.
	() Thanks

7th May 2007, 11:59	#13
deep_bang BHPian Join Date: Mar 2007 Location: Bangalore / Boise Posts: 888 Thanked: 1,270 Times	have you ruled out the possibility of bearings causing the problem?
	() Thanks