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Discussion Starter #1
Hi Folk,

So had the GT a while now and it's been running like a beaut.

However, took her out the other morning after she'd been sitting for about 24 hours (normally only left for 10 hours/12 tops, so dont know if this may be the cause...) and when I went to pull away, nothing. So i put my foot down. Nothing? By this time, I had pulled out onto a thru road, and sitting at 20mph in 2nd gear I should have been flying.

It wasn't until I (very slowly) managed to get to +5k revs that she came to life. And then after no issues.

So that was a few days ago, ran fine for 2 days, and the past 2 days I have had the issue again.

It always sluggishness from low RPM to 5K, but once I hit 5k the first time and after running for a mile you wouldn't know any different. I did notice today however (after being advised to drive less economically and see if it helps, noting it could be a messy carbon filter from eco driving) that after being fine, stuck in Christmas traffic the problem came back. When I footed it, it slightly kangerooed from 2K-4K (like micro bursts of power), then the boost kicked in and i nearly hit the back of the car in front of me.

Plugged into the ECU this afternoon (in the rain :( ) and no fault codes. Left it reading and drove around, everything seems to OK, injectors/air intake/fuel filter/pressure/ECG all seem to have correct readings, and where appropriate match the expected/target reading from the ECU.

There doesn't appear to be any air blowing, and I'm in doubt that its a cracked pipe/hose as it's too intermittent. Doesn't always happen either, this afternoon i drove for 10 miles conservatively with no issues.

Could this be a MAF sensor or similar issue? Has anyone else had/seen a similar issue?

Worth nothing, its a 57 plate and 500miles from the 72k. Could it just be in need of its service, old/deteriorated fuel filter?
 

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Discussion Starter #3
Has the cam belt, oil filter, oil and health checkup done at 67.6k when brought, and previously at 60.2k. All services from new to 47k were done at AMC Chelmsford which is a dealer. Last one done at 'Allans Autos' before the mini-service pre-purchase.

As said, not had an issue yet and run like dream.
 

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does a 57 plate have diesel particulate filter?
but that would have flagged an error !

id say its egr related but there would be loads of smoke when u get power back
what it like beind u when the power returns??
 

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My money is on either EGR or lower turbo hose.

However . . . . . . . . .JTDm . . . . . 5K rpm . . . . :confused:
 

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Discussion Starter #7
Cheers all!

Ill take a look behind me next time it happens and see if it looks like an old coal boat.

As for the lower turbo hoses, I'll take a look but are you suggesting a split (the issue seems to intermittent for that) or is there a known problem with them?

---

Edit: Noted that the factory turbo hoses can wear against the gearbox. Ill take a look cheers!
 

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Cheers all!

Ill take a look behind me next time it happens and see if it looks like an old coal boat.

As for the lower turbo hoses, I'll take a look but are you suggesting a split (the issue seems to intermittent for that) or is there a known problem with them?

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Edit: Noted that the factory turbo hoses can wear against the gearbox. Ill take a look cheers!
There is, well certainly on 2005 car. There is a bolt on the transmission that rubs the lower hose causing a hole. Mine had a nick in the rubber but there was a large split on the opposite side of the pipe and further along. No idea how the hole got there.
On mine there was a characteristic whooshing sound from behind the dash that got progressively worse it sounds like the heater fan going full thrutch! I also had no engine light at first, it took a couple of hundred miles since noticing the sound before the EML came on and even then I'm not convinced that was not caused by a "Water in Fuel Filter" warning I had.

The car got really bad and performance was almost none existent.
 

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Hi there,
I seem to be having the smae problem. Had the same thing happen a couple of weeks ago, ended up calling out the RAC, waited 10 mins, and then restarted the car and the issue appeared to be resolved - cancelled RAC! Called in to my local specialist garage, Turin in Leeds, they said it sounded like the EGR valve and they checked the car and couldn't find anything, also no faults on the computer. over this last week, I've been out on small runs, longest approx. 15 miles and have been experiencing problems with accelerating at revs upto approx 1.2k, after which things kick in and the car shoots off as normal! Phoned Piccadilly motors and talked to them about the problem, luckily the car is still under warranty, so they dsaid to bring it in today, which I did. Now Piccadilly motors is in Knaresborough, approx 40 miles from me. I set off and the car was doing the same thing, quite scary when setting of at a junction and hoping the car coming in the opposite direction will be willing to slow down if I'm not out of the way! By the time I got to Piccadilly the car was running fine, did notice a couple of sluggish moments on the motorway on my way there though. they checked the car and the egr valve and couldn't find any thing wrong - sods law! I discussed the possibility of the the problem occuring when the car is cold and have left it with the dealer tonight, they'll start it up tomorrow and check - ~I'll let you know what happens tomorrow.
If anybody has any other thought, I'd welcome them!
Norm
 

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Sounds like the EGR valve, although I would also check the rubber vacuum hoses from the vgt valve to the diaphragm activator on the turbo.
 

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quick update - sorry not had access to laptop. Picked up my car on Saturday morning, the dealers tested it out from cold and still nothing. Drove it back to Leeds and no problems. will have to see how I get on!
Norm
 

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Discussion Starter #12
does a 57 plate have diesel particulate filter?
but that would have flagged an error !

id say its egr related but there would be loads of smoke when u get power back
what it like beind u when the power returns??
Loads of smoke today when the power came back. Assume this means EGR problems. Assume this is a garage job?
 

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Discussion Starter #13
There is, well certainly on 2005 car. There is a bolt on the transmission that rubs the lower hose causing a hole. Mine had a nick in the rubber but there was a large split on the opposite side of the pipe and further along. No idea how the hole got there.
On mine there was a characteristic whooshing sound from behind the dash that got progressively worse it sounds like the heater fan going full thrutch! I also had no engine light at first, it took a couple of hundred miles since noticing the sound before the EML came on and even then I'm not convinced that was not caused by a "Water in Fuel Filter" warning I had.

The car got really bad and performance was almost none existent.
Can i assume this was fixed by replacing the turbo hose then?
 

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I have been having the same/similar problem with my 04 plate 156 JTDm 1.9. It sometimes misfires at around 2k rpm when under load and at part throttle (usually at around 70mph in 6th gear)

I plugged the laptop in and monitored most of the outputs with FES on my way to work the other day and it ran absolutely perfectly. This morning on my way to work at one point it would not rev pas 2k rpm no matter what I did with the throttle, I changed down to 5th, no change, I changed down to 4th and still no change. The engine was not dying out, just not picking up, not even slowly like the revs were limited. I pulled onto a slip road and after about a minute it picked up and carried on like nothing had ever been wrong.

No warning lights have come on.

Anybody got any ideas? I can borrow a scope from work so I can test the MAF sensor, throttle position sensor and so on.
 

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Discussion Starter #16
I have been having the same/similar problem with my 04 plate 156 JTDm 1.9. It sometimes misfires at around 2k rpm when under load and at part throttle (usually at around 70mph in 6th gear)

I plugged the laptop in and monitored most of the outputs with FES on my way to work the other day and it ran absolutely perfectly. This morning on my way to work at one point it would not rev pas 2k rpm no matter what I did with the throttle, I changed down to 5th, no change, I changed down to 4th and still no change. The engine was not dying out, just not picking up, not even slowly like the revs were limited. I pulled onto a slip road and after about a minute it picked up and carried on like nothing had ever been wrong.

No warning lights have come on.

Anybody got any ideas? I can borrow a scope from work so I can test the MAF sensor, throttle position sensor and so on.
have you checked the EGR value? See my previous post, easy to do. Im doing this Sat morning as mines quite intermittent, and I am having very intermittent power issues at low rev's. Seems the EGR value is the most common issue, and free to clean out and check.

Ill let you know after Saturday AM if mines OK, but research i have done points to the EGR (and people above, thanks AO users). Mines too intermittent to be a cracked pipe etc.
 

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have you checked the EGR value? See my previous post, easy to do. Im doing this Sat morning as mines quite intermittent, and I am having very intermittent power issues at low rev's. Seems the EGR value is the most common issue, and free to clean out and check.

Ill let you know after Saturday AM if mines OK, but research i have done points to the EGR (and people above, thanks AO users). Mines too intermittent to be a cracked pipe etc.
Thanks, looks like that is my Sunday activity sorted. I have only had the car a few weeks and its about time I got intimate with it
 

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Discussion Starter #19
@jonny_rash I've had mine about 5 months. No issues yet. This started happening before xMas, and apparently the EGR normally soot's up after 60k (mines on 71k).

Think I'm going to use the how to guides to do some other cleaning/checking too while I'm in there.

As you said, it's time to get intimate!
 
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