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Curtis-Bay

Member Since: 10 Apr 2016
Location: Blockley
Posts: 29

Vibration at 3000 rpm

Having successfully cured the hesitation on my chipped and inter cooled Puma (leaking inlet manifold seal) I have had the injectors re-programmed and the engine runs really well. It pulls strongly though the rev range and it seems to rev more freely.

The only issue I now have is when accelerating hard I get a harsh engine vibration though the steering column at 3000 rpm which quickly disappears as the revs rise above 3100 rpm. This problem seemed worse before the injectors were tuned but I suspect the two are unrelated and the improvement is probably more to do with the generally smoother running of the engine.

Any suggestions would be appreciated.

18th Apr 2019 11:55am

LCJ

Member Since: 07 Sep 2009
Location: UK
Posts: 201

Prop UJ on its way out? I have had them only show themselves at certain revs when they start to go

18th Apr 2019 12:43pm

custom90

Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20290

Check transferbox Andy diff flanges are not loose and or nuts as well too. Especially the rear most
UJ and rear diff flange, that area is the most prone to issues for many people.

⭐️⭐️God Bless the USA 🇬🇧🇺🇸 ⭐️⭐️

18th Apr 2019 12:47pm

Curtis-Bay

Member Since: 10 Apr 2016
Location: Blockley
Posts: 29

Thanks guys.

I will get underneath and check the joints - only done 35K miles so it would be disappointing but who knows....

18th Apr 2019 1:21pm

Tommyharris

Member Since: 20 Mar 2018
Location: Bristol
Posts: 100

2013 Defender 90 Puma 2.2 HT Santorini Black

Curtis,

Did you manage to get to the bottom of the vibration??

I feel i have the same as you've described, especially when passing 3000rpm.

Mines just passed 15k miles.

Ive checked what the guys advised but no joy. Just wondering how youve got on?

Regards tom

23rd Jun 2019 8:22pm

Curtis-Bay

Member Since: 10 Apr 2016
Location: Blockley
Posts: 29

Hi Tommy

No loose UJ's or any other obvious things underneath.

I have had my injectors re-tuned and that seemed to improve things. I think it is basic engine vibration but something behind the dash is resonating at 3,000 rpm which amplifies the noise.

Let me know if you find anything.

26th Jun 2019 12:14pm

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