Patrol GQ rattle
Submitted: Friday, Jan 24, 2003 at 21:36
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I have a 1990 Patrol 4.2 diesel.When it is idling in neutral there is a distinct rattle coming from gearbox/clutch area.If revs are increased to 1000 rpm or over rattle disappears, aswell if you put your foot on the clutch.The problem seems to be alot more prominent when cold and virtually disappears when hot."Can anyone tell me if its perhaps the clutch rattling or the gearbox and if the clutch is about to give up"?
The vehicle has done 315000 Kms.It also has that annoying vibration when under load between 700-1100 rpm, more so than 3 other patrols I have been in.(infact one 1988 model had absolutely none!)
Reply By: IAMGQ - Saturday, Jan 25, 2003 at 02:16
Saturday, Jan 25, 2003 at 02:16
Finally I 've found another diesel GQ doing the same thing as
mine!
Mine is 93 340000k ......... The problem has been going on for 3 months since i got it. Firstly I also suspected the release bearing....but since the rattle is gone once it is hot, then I would think the problem may be from the input shaft bearing of the gearbox. As when clutch on, gearbox disconnect, no rattle.........................
when clutch off, drive input shaft.....bearing rattle...................and as it gets hot, everything goes smoothly..............no rattle....
Another possible cause may be due to the slightly lower of rpm when engine is cold. (around 700 rpm)
Anyway, I would not worry too much as everything is still running
well except the
well known annoying vibration when it is at low rev band.
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