Vibration TD42
Submitted: Sunday, Aug 10, 2003 at 14:38
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Member - John
I have a 1990 TD42 Patrol with 180,000 Km on clock. Has an annoying vibration around 1000 to 1200 RPM mark and then disappears. No
sign of it while on the highway. A real nuisance as it is just where one creeps along in many situations - particulary when towing slowly just after getting under way, in towns etc. Have fitted new clutch and also new bearings to the gearbox - still there. Had engine and gearbox mounts checked and supposedly OK. Seems to be harsh on idle - I feel too much vibration inside the vehicle. My first experience of a diesel. Any help will be appreciated.
Reply By: Martyn (WA) - Sunday, Aug 10, 2003 at 21:49
Sunday, Aug 10, 2003 at 21:49
John,
Some things to try and also look at. By the way, is it at these revs in all gears? OK, look for balance weights on the wheels missing especially if you've been doing a bit of off road,
check the prop shaft splines are moving and not seized,
check for mud behind the rims where you can't see, you could also move the prop shaft through 90 degrees I suspect it was moved when the clutch was replaced, universal joints, as mentioned by someone else. The vibration is a harmonic vibration by sounds of things, if it's the engine that vibrates it may be worth checking the harmonic balancer on the crankshaft pulley. It's an outside chance but when I bought my GQ it had the older style of engine mounts that when they where worn the metal tab used to hit the chassis rail and give me a hum dinger of a vibration, the later mounts have had these tabs removed. That should do for a start. Something else to do would be put the transfer case in neutral and try the gears again, see if you get the vibration again, the best bet up front is to try and isolate where it's coming from. I also take it that the vibration is when the transfer case is in 2wd, is that right?
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Follow Up By: Member - John- Monday, Aug 11, 2003 at 13:48
Monday, Aug 11, 2003 at 13:48
Martyn, Yes the vibration is in all gears at the same engine revolutions. Yes the transfer case is in 2wd. Will
check to see if the engine mounts are of the early type because that is the impression one gets that it's the engine vibration being transmitted to the body. Have had them checked to ensure not broken and they were OK.
Regards JohnPatrol TD42 Diesel
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