Perplexing Noise

[HunterJ]

Greetings all
Have progressed from my D2 petrol and I am the proud new owner of a 99 TD5 - a grandpa car as in 8-9/10 condition that has just ticked over 240k.
It was luuuuuv at first sight [biggrin] Just luv drivin the thing and am still trying to get my head around getting 800+ k per tank!

Already done the EGR removal/Provent 200 mod and using Chemtec each fill.

Anyway, enough of my adolescent infatuation over my new drive - between 2250rpm and 2500rpm (when driving) it has developed a metallic rattle like a loose heat shield. Not being female and able to be in two places at one time as in can't drive and listen from outside, it appears to be roughly under the drivers seat area but can't find anything loose so far.

Did the coasting in neutral test and blipped the accelerator and hardly any rattle at 2250-2500 so I'm guessing it may be gearbox related or something I haven't found yet.

Anyone had a similar experience or able to shed any light on the mysterious metallic rattle.
Cheers
HunterJ

PS: Best engine and gearbox oils to use recommendations appreciated.

[Lemo]

Here you go, knock yourself out....

The ultimate solution to Td5 vibration / knocking
The ultimate solution to Td5 vibration / knocking (https://www.aulro.com/afvb/discovery-2-a/100404-ultimate-solution-td5-vibration-knocking.html)

[Lemo]

I’ll save you some reading and suggest it might be the hand brake shoes?
To test this you’ll need to be traveling and lightly pull on the hand brake, if the rattle goes then you’ve found the problem.
Then you’ll need to either replace the backing plate on the hand brake drum as the shoes wear away the plate and there’s also an upgrade kit that uses stiffer springs as well.
Hope this helps?

And as for oil, a lot of members use Penrite as do I and for all oils

There’s plenty of info on here if you use the search function[emoji106]

Cheers Lemo

[Andrew D]

Also check your front prop shaft.

Near the drivers seat and they fail in all sorts of ways and therefore make different sounds and peoples experiences are wide and far.

Check the forum for prop shafts on the D2.

[steve_a]

I'd say it has all of the descriptions of the front double cardan joint. A doable home job, if requiring 3 hands at some point

[ballbag]

Check brake mud shields. They crack around the mounting bolts. Happens... all .... the ..... time. Especially if car has 16” wheels as they often catch the shield when removing/refitting a wheel.

[discorevy]

as Lemo stated, it will be handbrake shoes at those revs
as a temporary measure and until you repair / replace the springs / backing plate , adjust the handbrake ( 17mm 3/8" socket on the front side of backing plate down the bottom until you get 2-3 clicks out of the hand brake.

Penrite hpr 5 , 5/40 diesel oil is my go to for the td5 , fully syn dex 6 works well with the 4hp22 eh box , gl5 for the rest of the driveline

[HunterJ]

Thanx heaps for all the replies guys.
Will start with checking out the hand brake this weekend!
Cheers
HunterJ

[Roverlord off road spares]

Misread post , its a TD5 now.

[rick130]

Penrite hpr 5 , 5/40 diesel oil is my go to for the td5 , fully syn dex 6 works well with the 4hp22 eh box , gl5 for the rest of the driveline


If using Penrite, ATF FS also works well.
It's what I've filled mine with.
If you can afford it Castrol Transmax Z is the ATF all others would be judged by.

In an R380 Castrol Syntrans 75w-85 is good, but if $ are no object Motul Gear 300 (non LSD) is bloody amazing.
Don't be put off by it being a 75w-90, at 0° it's thinner than Syntrans.

[rick130]

Penrite hpr 5 , 5/40 diesel oil is my go to for the td5 , fully syn dex 6 works well with the 4hp22 eh box , gl5 for the rest of the driveline

And good to know Dex 6 works ok.
I know GM states it's backwards compatible but a number of older 'boxes don't work well with the lower viscosity fluid.

[gavinwibrow]

If using Penrite, ATF FS also works well.
It's what I've filled mine with.
If you can afford it Castrol Transmax Z is the ATF all others would be judged by.

In an R380 Castrol Syntrans 75w-85 is good, but if $ are no object Motul Gear 300 (non LSD) is bloody amazing.
Don't be put off by it being a 75w-90, at 0° it's thinner than Syntrans.

At the risk of getting off topic, re Castrol Transmax Z, is it just better "lubrication" or for example does it make the transmission last longer?

[discorevy]

And good to know Dex 6 works ok.
I know GM states it's backwards compatible but a number of older 'boxes don't work well with the lower viscosity fluid.



Just to clarify, I was given that info from someone in the industry who I respect.... but, I personally use the same as yourself ( either atf fs or fuchs 4400 ) interestingly, penrite state forward compatibility with dexron 6.

my thinking is that while the lower vi of the dx6 might work very well on a box in tip top shape , I would have thought there would be more chance of drag, particularly on the td5 when the "F" clutch basket can wear faster than others due to the firing pulses

[rick130]

At the risk of getting off topic, re Castrol Transmax Z, is it just better "lubrication" or for example does it make the transmission last longer?For a very long time it had better oxidation resistance than what was commonly available, handled higher temps better and met GL4 gear oil performance even though Castrol didn't advertise that so basically the trans lasted longer.
There are now some very good synthetic ATF's on the market.

[HunterJ]

Hi All
Just reporting back re my perplexing noise!
Adjusted the park brake as described - took a number of turns to get the shoes to bind up and backed them off 1.5 turns. Have 3 clicks on the lever. Hey presto, the noise is 99% gone so new shoes to be put in.

Would like to support an AULRO aligned vendor so anyone out there want to sell me a pair - just PM me with details.

Re the engine, she is currently running Penrite HPR Diesel 15 Semi Syn 15W-50, Extra Ten Full Zinc even.
Is this OK or should I change over to the 10W 40 recommended previously? Oil change due now so if a change is recommended I'll do it this time.
The oil filter on the Td5 is a little gem to get to isn't it [bawl]

Thank you all for replying so quickly with solutions, much appreciated.
Regards
HunterJ

[Pippin]

Hi All
Just reporting back re my perplexing noise!
Adjusted the park brake as described - took a number of turns to get the shoes to bind up and backed them off 1.5 turns. Have 3 clicks on the lever. Hey presto, the noise is 99% gone so new shoes to be put in.

Would like to support an AULRO aligned vendor so anyone out there want to sell me a pair - just PM me with details.

Re the engine, she is currently running Penrite HPR Diesel 15 Semi Syn 15W-50, Extra Ten Full Zinc even.
Is this OK or should I change over to the 10W 40 recommended previously? Oil change due now so if a change is recommended I'll do it this time.
The oil filter on the Td5 is a little gem to get to isn't it [bawl]

Thank you all for replying so quickly with solutions, much appreciated.
Regards
HunterJ It's the backplate that may need attention if there is wear where the shoes contact it. Also the adjuster may be slowly undoing itself which could be the reason for your adjustment rather than shoe wear. You can also get updated hold down springs for the shoes which also helps, I think they are Red rather than standard black.
Nick

[rick130]

Re the engine, she is currently running Penrite HPR Diesel 15 Semi Syn 15W-50, Extra Ten Full Zinc even.
Is this OK or should I change over to the 10W 40 recommended previously? Oil change due now so if a change is recommended I'll do it this time.


The original factory fill grade was a full synthetic 0W-30 so I can't see any reason to go heavier than an xW-40, it's just not necessary and just creates extra drag costing power and fuel.
It could be argued we're all nuts using an xW-40, millions of albeit petrol cars in the US have been using xW-30 oils forever and last almost as long, too.
FWIW big diesels are being specced with xW-30 HD oils now too.

[discorevy]

The oil filter on the Td5 is a little gem to get to isn't it [bawl]




2 oil filters, don't forget the rotor filter[thumbsupbig] ( err6299 )

[donh54]

Hi All
Just reporting back re my perplexing noise!
Adjusted the park brake as described - took a number of turns to get the shoes to bind up and backed them off 1.5 turns. Have 3 clicks on the lever. Hey presto, the noise is 99% gone so new shoes to be put in.

Would like to support an AULRO aligned vendor so anyone out there want to sell me a pair - just PM me with details.

Re the engine, she is currently running Penrite HPR Diesel 15 Semi Syn 15W-50, Extra Ten Full Zinc even.
Is this OK or should I change over to the 10W 40 recommended previously? Oil change due now so if a change is recommended I'll do it this time.
The oil filter on the Td5 is a little gem to get to isn't it [bawl]

Thank you all for replying so quickly with solutions, much appreciated.
Regards
HunterJ

Regarding parts suppliers, my Number One go-to is Roverlord. Long time supporters of this forum, great prices and stellar service from Mario and Heather. They have an eBay store, but if you PM them from here, you get an even better price. They even give options (with info) on OEM, Genuine or aftermarket parts. Never been disappointed yet.