4.6voguelpg

New Member

• Jan 18, 2017

• #1

Hi all,
New to p38 ownership and to 4x4 ownership but when im driving along and give it full throttle there is often a vibration and noise for a few seconds any clues to cause or advice woukd be apreciated. I have a 2000 4.6 model

 

Wazzajnr

Well-Known Member

• Jan 18, 2017

• #2

Could be one of many things.
However, I'd be looking at things like propshaft joints, engine/gearbox mounts, exhaust mounts, misfire on engine.
Probably going to need more info to be able to work out what's causing it.

 

oakey

Well-Known Member

Full Member

• Jan 18, 2017

• #3

Had a disco that did hat and it was a seized fan bearing if I remember correctly

 

4.6voguelpg

New Member

• Jan 18, 2017

• #4

Thanks guys the vibration feels like its below me seems to only happen if u give it full throttle or close to it to make it drop gears

 

Wazzajnr

Well-Known Member

• Jan 18, 2017

• #5

Engine/gearbox mounts. Exhaust catching due to weak or broken mounts. Propshaft universal joints.
I'd be looking at those first as they're easy checked.
Just to note, my 4.0 vibrates a bit around 70mph more so under load. I think the props aren't perfectly balanced so I just drive at 60 or 80 where it's smooth as.
Bear in mind, it's an old car with much more heavy steel spinning around under it than your average saloon car so slight vibration at certain speeds I wouldn't worry too much about. If it's bad across the range then check the above.

 

Mark Piercy

Well fumbled member....

Full Member

• Jan 19, 2017

• #6

mine does something like that around 2500 rpm. Mines got 185,000mls. Just worn gearbox and converter... Have some body in it and have a listen underneath (in neutral of course) and see if you can pinpoint it. Oh, while its running that is and get them to rev it up slowly.

 

Grrrrrr

Technician, Bodgit & Scarper Ltd

Full Member

• Jan 19, 2017

• #7

I'd be checking spicers. Balancing weights and harmonic dampers all present?

 

wammers

No longer with us, RIP

Donater

• Jan 19, 2017

• #8

Exhaust heat shield crops up occasionally as a rattler.

 

Grrrrrr

Technician, Bodgit & Scarper Ltd

Full Member

• Jan 20, 2017

• #9

wammers said:

Exhaust heat shield crops up occasionally as a rattler.

Click to expand...

That's a good one. I managed to secure mine with some replacement shock-washers.

 

SpanishTony

Active Member

• Jan 22, 2017

• #10

sometimes exhaust drops a little on to cross member an needs tightening up

 

Grrrrrr

Technician, Bodgit & Scarper Ltd

Full Member

• Jan 22, 2017

• #11

4.6voguelpg said:

Thanks guys the vibration feels like its below me seems to only happen if u give it full throttle or close to it to make it drop gears

Click to expand...

Any progress?

 

W

Willos

Active Member

• Jan 22, 2017

• #12

Does it vibrate as in neutral whilst stationary when revved. That would cut diagnostics down

 

ovalandrover

Well-Known Member

• Jan 22, 2017

• #13

check tightness of bolt holding handbrake drum

 

Mark Piercy

Well fumbled member....

Full Member

• Jan 23, 2017

• #14

did you get a chance to have a mooch underneath?