D4D Problems

Submitted: Sunday, Aug 31, 2008 at 15:31


Have the new Prado owners stayed up-to-date with the D4D problem that seems to be happening??

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Reply By: Member - Olcoolone (S.A) The O Sunday, Aug 31, 2008 at 16:54

It's not a problem as such.

The likely reason it they do it is due to the D4D two stage injector fire when cold, some do it some don't, maybe to do with ECU programming and self learn function.

I believe it is to do with meeting emission targets, maintaining smooth idle and ease of starting when cold.

People are getting concerned due to the rattle that is in most CRD engines when cold as some are louder then others, they are working in excess of 20,000psi injection pressure.

Remember they don't have any pre heating.

But I would not take my word for it because I know nothing about it and I'm sure some one will tell me I full of bleep ....but these people wont give a reason why I night be wrong!

If it is a concern people should contact there Toyota dealer.
AnswerID: 323140

Follow Up By: DCTriton

Been reading about this in several forums, the rattles seem to start at the 10 - 15k mark and several pics have now been posted of pistons with holes burned through them after the rattle started...

Seems people are fed up enough to label the D4D as the next ZD30 hand grenade...
FollowupID: 590256

Follow Up By: TD100

well the 2 at work (have about 8 in total) that have about the 130k mark on them have done it since new and are still running like tops,never had an engine issue with them.1 clutch slave cylinder only and they get driven like they were stolen!!
FollowupID: 590257

Follow Up By: Nutta

Anyone on here with a crd patrol or other that rattles real loud on cold start?
FollowupID: 590258

Follow Up By: Member - Olcoolone (S.A) The O

Haven't heard of any D4D's going bang, even on the Hilux or the Pradopoint forum.

DCTriton can you tell me where the pictures are and where you heard that they were going bang?

Haven't heard the D4D being labeled the next ZD30 hand grenade.

It's funny how Google doesn't come up with anything regarding Toyota D4D engine failures.

We have a 2.5 years old Hilux and it rattled from new when cold and we also have a 2 month old Hiace D4D that is noisier then the Hilux when cold.

This motor has been around since late 2000 and don't you think Toyota would of fixed it by now?

Here comes all the Toyota D4D bashers.

FollowupID: 590265

Follow Up By: DCTriton

I'm not a D4D basher, I'm not a Toyota fan either but don't hold that against me... I got emailed some links a few weeks ago from my step father in Darwin, for some reason he thought I bought the Hilux instead of the Triton... When I get home in the morning I'll see if I still have it, if not I'll email him to resend...

Nutta - I have the CRD Triton, one of the4 quietest diesels I've driven, hot or cold...
FollowupID: 590271

Follow Up By: Member - Olcoolone (S.A) The O

Check this link regarding noise.

FollowupID: 590273

Follow Up By: DCTriton

A few clicks on google and half an hour reading:


scroll down to the pics, these are not the same pics I was sent so there's at least two that have grenaded... Also a mention of a couple of Hiluxe D4D's supposedly failed on pg21...
FollowupID: 590284

Follow Up By: Member - Tour Boy Springsure

My work D4D hilux rattles like crap and has done for the last 92,000km. It is worse just before it is due for an oil change. They do them at 10,000km intervals here. Straight after a service it doesn't rattle much for the first couple of thousand km.
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FollowupID: 590287

Follow Up By: Member - Olcoolone (S.A) The O

I think people are getting excited over very little.

If it was a more of a common problem (engine failure) I would be concerned.

All man made things can fail.

An engine failure can be caused by many things, build error, bad fuel, fuel type and the list goes on.

The guy who's engine failed was in Germany and some one else has supposedly heard of two Hilux's dropping their guts somewhere in Australia.

There was mention of a leaking injector that may of caused the failure.

I would expect a PO0093 or similar fault code to be present from the ECU, it relates to a large fuel leak.

I would expect with the number of D4D's with this so called knock or rattle when cold that there would be a lot that has failed but it seems not to be the case.

I'm sure if you looked hard enough you would even find a BMW engine that has failed....and they are the best engine builders in the world.

Caterpillar, Detroit and Cummins all have the odd engine failure but then also there are many of their engines that have done in excess of 1 million kilometers with very few issues.

Hell I think I'll take the 2 month old Hiace we have with less then 2000 kilometers back to Toyota because that has made this noise form day one.

I might do the same with the Hilux as well.

If it was a problem I'm sure Toyota would address it very quickly...there was comments made that they know about it but didn't want to do anything until the vehicle was out of warranty...after then the customer would have to pay for repairs.

I don't think a vehicle manufacture would be that stupid to think that as word would soon get around, there would be no resale value n the second hand market and people would not by a Toyota again.

Do you really think Toyota would gamble with their reputation regarding being the "builders of very reliable vehicles".

Seeing this engine design has been around for over 8 years and the current 3lt. D4D has been around for over 4 years I think they would of rectified the problem by now if it was a reliability issue.

Seeing most D4D's do it I doubt Toyota See's it as a problem, may be a noise problem but not a reliability problem.

FollowupID: 590304

Follow Up By: deserter

Gee Oolcoolone - that like saying that Nissan would not refuse to recognise a problem with the earlier 3L motor due to damaging their reputation lol.
FollowupID: 590333

Follow Up By: Member - Olcoolone (S.A) The O

From my understanding if you have a problem with a 3lt. Nissan patrol motor Nissan will still warrant a % of the repairs, I believe they will supply parts and you have to pay for labour as long as the vehicle has be serviced to the manufactures specs.

The Nissan 3Lt's that were a problem I think were from 2001 to late 2002 then they fixed the problem and they have been OK since.

The so called problem with the Toyota D4D has been around since mid 2003 when the motor was introduced in the Prado's in Europe.

I don't think Toyota would not fix a problem in production in 5 years.

Any manufacture who ignored a potential problem for over 5 years would be very stupid and would be committing industrial suicide.

Remember Mitsubishi ignoring faults with their vehicles and the out come that rocked the automotive industry 6 years ago..... I think 3 high end management personal committed suicide over

So if there is a problem why don't you think Toyota has rectified it yet?

They have only had over 5 years to find a cure.

FollowupID: 590353

Reply By: Member - Kevin R (QLD) Monday, Sep 01, 2008 at 09:10

Hi Guys,

I have a March 08 build Prado with 12000k now on the clock. No ratlles or problems of any kind touch wood. The problem seems to be an injector issue. A couple of the pradopoint blokes have had injectors replaced and the rattle has disappeared. Very high fuel consumption is associated with the problem.


AnswerID: 323219

Follow Up By: Member - Olcoolone (S.A) The O

They seem to do it more in the colder climates, below 10 deg.C
FollowupID: 590305

Follow Up By: Member - John F (NSW)

Hi Kevin, my Hilux has had the rattle from new. Only on cold start, and disappears after 2 minutes. Currently at 66k km.
My fuel consumption exceptional - 7.8 to 8.4l/100km.
Toyo service manager said last week they are still working on a reprogramming fix for the ECU.
I wouldn't be too worried.

Regards, John.
FollowupID: 590323

Reply By: puttputt Monday, Sep 01, 2008 at 23:42

Interesting and scarey, my prado 07 d4d has done 16000 km, and is not noisy, I change oil/filter at every 5000 km, and only use BP diesel ultimate, which I believe is only available in WA and is new generation low sulphur diesel, does cost more though, sounds like it could be the d4d does'nt like our lousy diesel, now I know how the Nissan zd30 owners feel, if it becomes a general problem, I will sell it real fast.
AnswerID: 323382

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