Grinding noise in gear-change!

ramzsys · 1st October 2007, 20:14

In my fiat 137D, while depressing clutch and engaging first gear, i hear a non-uniform grinding noise.

When i shift to neutral again, and the clutch is depressed still, the sound continues or stops.

This also happens at 2nd, 3rd too, but at higher rpm/car speeds, there is no sound at all.

Local mechanic says gearbox need to be opened.

Help...

Ram · 1st October 2007, 21:09

@ramzsys, this is characteristic of the silky smooth all-synchromesh Premier 118NE gearbox and the Padmini S1s that inherited it.

When the engine is idling with the gear lever in neutral, you will hear a steady hum. When you depress the clutch pedal, this hum disappears.

My guess is that the idler shaft in the gear box hums when spinning free.
Again, it's no more than an educated guess.

A "grinding" noise sounds more serious. I would recommend you get advice from a 118NE/PadminiS1 expert. At this time, I can think of none more competent than Behram Dhabhar.

Ram

1100D · 1st October 2007, 22:22

Looks like a clutch issue (maybe pressure plate) rather than anything to do with the gearbox. Try opening the Clutch housing rather than the gearbox. However will agree that Behram Dhabar is the best person to direct you.

adheesh · 1st October 2007, 22:37

Have you changed your transmition oil recently ?? If not get it throughly flushed and changed. Then if the problem persist, you may go furthur to check the clutch pressure plate.

1st October 2007, 20:14	#1
ramzsys Senior - BHPian Join Date: Dec 2006 Location: NH209 Posts: 1,785 Thanked: 1,467 Times	Grinding noise in gear-change! In my fiat 137D, while depressing clutch and engaging first gear, i hear a non-uniform grinding noise. When i shift to neutral again, and the clutch is depressed still, the sound continues or stops. This also happens at 2nd, 3rd too, but at higher rpm/car speeds, there is no sound at all. Local mechanic says gearbox need to be opened. Help... Last edited by ramzsys : 1st October 2007 at 20:15.
	() Thanks

1st October 2007, 21:09	#2
Ram Senior - BHPian Join Date: Dec 2005 Location: Singapore, Mumbai, Nagpur Posts: 2,166 Thanked: 223 Times View My Garage	@ramzsys, this is characteristic of the silky smooth all-synchromesh Premier 118NE gearbox and the Padmini S1s that inherited it. When the engine is idling with the gear lever in neutral, you will hear a steady hum. When you depress the clutch pedal, this hum disappears. My guess is that the idler shaft in the gear box hums when spinning free. Again, it's no more than an educated guess. A "grinding" noise sounds more serious. I would recommend you get advice from a 118NE/PadminiS1 expert. At this time, I can think of none more competent than Behram Dhabhar. Ram
	() Thanks

1st October 2007, 22:22	#3
1100D Senior - BHPian Join Date: Jun 2006 Location: Calcutta Posts: 4,390 Thanked: 4,117 Times View My Garage	Looks like a clutch issue (maybe pressure plate) rather than anything to do with the gearbox. Try opening the Clutch housing rather than the gearbox. However will agree that Behram Dhabar is the best person to direct you.
	() Thanks

1st October 2007, 22:37	#4
adheesh BHPian Join Date: May 2007 Location: Bombay Posts: 526 Thanked: 54 Times View My Garage	Have you changed your transmition oil recently ?? If not get it throughly flushed and changed. Then if the problem persist, you may go furthur to check the clutch pressure plate.
	() Thanks