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Discussion Starter · #1 ·
I bought a 1999 Discovery Series I from a local dealership out here in Denver, CO. I am now plagued with problems. The vehicle was recently *undriveable* due to my driver side front wheel bearing being frozen up and worn out. My warranty company (extended warranty, company by the name of FreedomNOW, biggest pain-in-the-rear in the business according to Land Rover Denver South) barely covered what was needed to get the vehicle driveable. Every valve in the universe of the truck is leaking (or so I'm told) as well.

But enough about those issues. Maybe you all can assist me in identifying the causes of the following symptoms:

* A high-pitched whistling noise that eminates when I press down on the gas peddle. The problem is sporadic, but happens almost every one out of three times that I apply lightly to moderately (not gunning it) on the gas pedal. It drives me nuts, and I can just imagine what some poor dog would go through if it heard it :)

* The noise of the engine ROARING into the cabin. I did not have this problem prior to having the vehicle worked on at Land Rover Denver South. The automatic transmission seems to be shifting poorly. Could this be a cause? I am not a car buff :beer:

* An unusually bumpy ride that did not exist before the wheel bearings and hub assembly were replaced.

Any ideas from you folks whom have owned a Discovery longer than I?


Thanks in advance,

Brandon
 

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High pitched noise... if it is more of a hum, and only happens under load (gas applied) then I would suspect the front or the rear diff.

Engine roaring into the cabin.. no idea.. what did they do on the engine?

Bumpy ride - check your tire pressure.


Just some ideas, hard to diagnose this stuff on-line of course. :dunno:



Serg
 

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Discussion Starter · #3 ·
Not much of a hum, but just a high pitched noise. Hard to explain. Drives me NUTS and my girlfriend as well :D

Nothing was touched on the engine. This is what makes it so odd. It was NOT behaving like this before.

Tires should be fine -- but I will check anywho. It just seems like they took my Disco and replaced it with another!


Brandon
 

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I agree with 55, check your fan clutch for the source of the roaring noise.

Is the screeching only when driving, or will it also happen when in neutral? If it's engine rev related, as opposed to road speed related, look for things on the engine like bad alternator bearings, serpentine belt idler pulley bearings (very common).

Bumpy as in hard ride or noisy ride? Look for worn out suspension bushings, and don't forget the center ball joint on the rear end. Bad shocks, excessive tire pressure.
 

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I assume that the worn wheel bearing emited quite a lot of noise prior to replacement? Perhaps that was masking the noise from the drivetrain. Again, pure speculation but the drivetrains do make a lot of noise (IE whining sound).

Mine is even more prominant now that I have new tires taht are much quieter than the OEM GoodYears.

Also, you said you have a 99 D1, I thought the D2 started in 99. Am I wrong on this?
 

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Amazing how those noises go away when the radio volume goes up.

I had a similar high pitched noise in my Disco, it evolved into a vibration, which evolved into a new front driveshaft. I did have a rattle that turned out to be a front wheel well cover (?) that had a screw missing. Made a heck of a noise everytime I stopped hard and accelerated hard. I found it by taking my rubber mallet and taping on EVERYTHING I could find.

Hope that helps.
 

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Litespeed said:
Amazing how those noises go away when the radio volume goes up.

I had a similar high pitched noise in my Disco, it evolved into a vibration, which evolved into a new front driveshaft. I did have a rattle that turned out to be a front wheel well cover (?) that had a screw missing. Made a heck of a noise everytime I stopped hard and accelerated hard. I found it by taking my rubber mallet and taping on EVERYTHING I could find.

Hope that helps.
The high pitched noise that evolved into a new front driveshaft .Was this a constant noise even when brakes were applied or did it go away at times ?
I have such a high pitched noise coming from the right front which I am attributing to new brakepads and new discs fitted a while back? Would hate it to be anything else!
 

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The noise I had actually varied from a high pitch at 20-30 mph to a rumble above 30 mph, then to a bad vibration at 55+mph. The noise pretty much was constant even when put in neutral going down the highway. Finding noises on a car can be a zen-like experience. Post a message when you are enlightened. Much luck to you!
 

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roaring

I too have been suffering from a loud ROARING coming from the engine for the past few weeks. As a result of reading this thread, I went and checked my cooling fan and found I was unable to turn it by hand with the engine off. Also when the engine is running, the fan always runs, with speed and roaring noise proportional to engine speed. I just ordered a new viscous drive from Atlantic British for $229.95. Hopefully I can persuade my local gas station repair shop to install it, although I find most independent shops refuse to work on Land Rovers! I'll let you know if this fixes it, but I'm pretty sure this is the problem.
 

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Haha, you are correct....indy shops HATE rovers with a passion. I had a brake job done with a trusted shop that is run by a buddy of mine and he said "dude, that thing is STUPID...we had to take half of the truck apart to take the rotors off"..i just laughed..but from now on im doin all my own repairs...i couldnt find a "STUPID" 2-1/16 Socket anywhere for the hub...then after i payed for the job, i found it on Altantic British...i was so bummed!..AND i found a brake kit (4 rotors, 4 sets of pads, and other parts related) for a little less than what i payed...that one hurt!..BUT ANNYYYWAYYY...a roaring sound ehh?...no clue..LOL
 

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Engine Roar

I thought my truck was just really tough, because my engine seems to roar as well. (1999 Disco I). It's louder when I accelerate harder. In instances when I accelerate slowly, it doesnt seem to roar like that. I am such a mechanical novice, I'm unsure about how to turn the fan by hand. Should I expect any resistance with the engine off? I don't want to force it to turn if it's not working properly.

Mine also makes the squealing sound when driving. It's sooo irritating...sounds like a high squealy sound, similar to brake pad squeal, but it only makes the sound while driving, not when brakes are applied. Turning the wheel slightly when I hear this noise makes it stop, but I can't keep it in that position or I'd be driving in circles!! I just got this vehicle, and I'm trying to pinpoint all the details to get everything repaired right away.
 

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Roaring sound is usually the fan clutch, it is a fairly easy repair. The local auto parts store should have a replacement coupling to fit, although usually if you tell them it's a Land Rover they just get confused. Whistling noise could be the belt under more stress from the fan not functioning correctly, or the idler pulley, or any number of the things mentioned in the above posts. Remember that the Discovery does have a noisy drivetrain, although some noises do indicate trouble. Check the fluids and fluid levels, as a Rover does seem to "lose" its fluids & a lack of fluid will create more noises. As far as the bumpy ride, I would take it back immediatly as there may be a wheel loose or not properly mounted. Rotate the tires and see if it changes. Good Luck! LRW
 

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Brandon, I feel your pain. I agree with Litespeed--best cure for Rover noises is solid stereo system. You will be plagued with mystery sounds that come & go. Some noises started after you brought it into LR dealership? Hmmm,,,,Doesn't surprise me.
 
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