New Defender Strange Engine Noise - Paranoia?

**solmanic** · 22nd July 2008, 05:40 PM

Following the saga being played out in this thread, I (and possibly several others) am now bordering on paranoid regarding every little noise, cough and sneeze my new Defender makes.

Since new my vehicle has had an issue where about 1-5 minutes after starting off (from cold) the engine revs harshly for an instant (with perhaps the slightest loss of power), then settles down to normal functioning. Like I said, this has been happening since it was new but I get the feeling it is happening just a bit more often now - every trip instead of every third trip.

Last month I had an engine warning light come on with the same revving but much greater loss of power. The vehicle went straight back to the dealer and they did a diagnostic check before reporting that the common rail system was stuffed (apparently a common fault - "common-fail" system

). This was replaced along with the "entire fuel system" under warranty. I thought this odd behaviour after start-up may then go away since the event that caused me to take it into the dealer seemed just like a magnified version of the usual noise.

Alas no, this morning it happened again only this time with a slight misfire - but no engine warning light.

When they replaced the fuel system & common rail they checked and reported that all the injectors were fine and "no other damage had been done".

So gurus and mechanical sages - any ideas?

**dullbird** · 22nd July 2008, 05:58 PM

solmanic

that is exactly what happened to us........

including the symptoms your are describing (not trying to scare you mate)

except we were told not to bother bringing the car in SEE HOW IT GOES!!!

now look at what strife we are in.

**PAT303** · 22nd July 2008, 06:11 PM

I hope LR aren't having the same problems Toyota are having.It's the fuel that is causing headaches,the new breed of engines don't like it. Pat

**LROV90** · 22nd July 2008, 06:13 PM

I am having very similar problems. The engine does a funny rev thing and often lacks power to the point of not being able to accelerate to 100k/h. If your in 5th at 80 and put you foot down it surges and carries on. Apparently the dealer has carried out the fuel control mod but this has done nothing. They have now emailed landrover for a response.

While I am whinging it has been back in about 4 times for strange noises coming from the transfer case. It also jumps out of diff lock. The first time it was in I asked them to at least drain the oil which they didn't do. I cracked it the other day and drained it myself and it is full of large brass chips - probably from the diff lock cones - useless!!!!

**dullbird** · 22nd July 2008, 06:14 PM

Originally Posted by PAT303

I hope LR aren't having the same problems Toyota are having.It's the fuel that is causing headaches,the new breed of engines don't like it. Pat

pretty bad fuel problem if that is the case pat, as this problem is evident now in the uk and in ireland

**one_iota** · 22nd July 2008, 07:16 PM

I hope it isn't the subject of the attached service bulletin issued by Land Rover yesterday relating to a knocking noise in the engine. SMS38792 "2.4 Puma engine knocking noise"

**jimbo110** · 22nd July 2008, 07:28 PM

Now everybody go out to your trucks and check the numbers....................

My 300TDI is looking better all the time, first the TD5's now the Puma's

Some of you guys might be getting new engines to run in.......................again

**Blknight.aus** · 22nd July 2008, 07:32 PM

why is it I think were going to be getting a reccurance of the ULSD causing injector spotting and regulator stickings....

**jimbo110** · 22nd July 2008, 07:40 PM

Originally Posted by Blknight.aus

why is it I think were going to be getting a reccurance of the ULSD causing injector spotting and regulator stickings....

**one_iota** · 22nd July 2008, 07:41 PM

Originally Posted by jimbo110

Now everybody go out to your trucks and check the numbers....................

My 300TDI is looking better all the time, first the TD5's now the Puma's

Some of you guys might be getting new engines to run in.......................again

Don't panic that would be hysteria as opposed "hysteresis" (to use their word):

hys·ter·e·sis Audio Help/ˌhɪstəˈrisɪs/Pronunciation Key - Show Spelled Pronunciation[his-tuh-ree-sis]Pronunciation Key - Show IPA Pronunciation
–noun Physics. 1.the lag in response exhibited by a body in reacting to changes in the forces, esp. magnetic forces, affecting it. Compare magnetic hysteresis. 2.the phenomenon exhibited by a system, often a ferromagnetic or imperfectly elastic material, in which the reaction of the system to changes is dependent upon its past reactions to change.
[Origin: 1795–1805; < Gk hystérésis deficiency, state of being behind or late, hence inferior, equiv. to hysteré-, var. s. of hystereǐn to come late, lag behind, v. deriv. of hýsteros coming behind + -sis -sis]

You've got to laugh!

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