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![]() | Home > Maintenance & Modifications > How much vibration is acceptable in a SD4? |
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IanMetro Member Since: 11 Sep 2017 Location: Somerset BS21 Posts: 3214 ![]() ![]() ![]() |
The alternator pulley has a one way clutch, and has been known to seize up.
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sobrinho Member Since: 22 Jul 2019 Location: Brazil Posts: 96 ![]() ![]() ![]() |
Went to a different mechanic today and he is sure that it's the torque converter because everything else has been already discarded and/or replaced and the alternator pulley seems fine (no noise and no apparent vibration in the aux belt).
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sobrinho Member Since: 22 Jul 2019 Location: Brazil Posts: 96 ![]() ![]() ![]() |
The torque converter, all mountings, and the alternator all tested by them and they are all okay.
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Tigertim Member Since: 23 May 2016 Location: Doncaster Posts: 124 ![]() ![]() ![]() |
Just reading and watching this thread with interest as we have 2 early 2.2 auto freelanders and both of them have vibration around 1800 rpm . Spent a lot of time and fair amount of cash on one to try and find the cause and eventually decided it is just a characteristic of these models . Some days I think it’s engine related then change my mind and think no it’s a transmission problem then a resonance problem but the issue is vibration can be in one component but show it’s self as a symptom somewhere else so it’s very frustrating and difficult to pinpoint . As you say driving in sport mode keeps the rpm up so avoids the problem . Looking forward to hearing any more ideas on a cure thanks |
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sobrinho Member Since: 22 Jul 2019 Location: Brazil Posts: 96 ![]() ![]() ![]() |
Quick question: did anyone try to change the MAF sensor?
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Tigertim Member Since: 23 May 2016 Location: Doncaster Posts: 124 ![]() ![]() ![]() |
Just been for a 5 mile drive with maf unplugged no difference in anything .... |
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sobrinho Member Since: 22 Jul 2019 Location: Brazil Posts: 96 ![]() ![]() ![]() |
Alright, that discards it, same behavior here.
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sobrinho Member Since: 22 Jul 2019 Location: Brazil Posts: 96 ![]() ![]() ![]() |
Did anyone ever hear about the counterweight/balanced axles of this engine?
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jules Member Since: 13 Dec 2007 Location: The Wilds of Warwickshire Posts: 5165 ![]() ![]() ![]() |
They are obviously geared to the crank internally so unless the engine has been dismantled in the past I dont see how the balance shafts could get "out of time". Jules |
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sobrinho Member Since: 22 Jul 2019 Location: Brazil Posts: 96 ![]() ![]() ![]() |
Indeed.
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jules Member Since: 13 Dec 2007 Location: The Wilds of Warwickshire Posts: 5165 ![]() ![]() ![]() |
Im not sure what a slightly miss-timed camshaft would feel like on a FL2 engine.
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Tigertim Member Since: 23 May 2016 Location: Doncaster Posts: 124 ![]() ![]() ![]() |
So this weekend I connected electronic listening device to my transfer box and drove round for 10 miles at differing engine speed and in different gears and as I listened the noise I was hearing it like a grinding and rumbling that corresponded to the vibrations through the car it really did sound bad yet I cannot feel any play in the output shaft so I’m going to remove the propshaft and repeat the test just to eliminate it then remove the transfer box for a more thorough look at it and drive without it and see how it feels . I know transfer boxes are problematic but only read about complete failures not how they appear when on the way out ... |
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Roddos Member Since: 29 Mar 2019 Location: Yorkshire Posts: 16 ![]() ![]() ![]() |
Which device did you use ? |
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sobrinho Member Since: 22 Jul 2019 Location: Brazil Posts: 96 ![]() ![]() ![]() |
Keep us posted!
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