Engine briefly cutting out

[tootip]

hello

reading over the replies over the past years , is replacing the fuel tank the definitive solution to the engine briefly cutting out , as im having these problems in my db9 . speaking about the fuel tank replacement , how much do they cost ?

thanks

[JohnG1]

tootip said:

hello

reading over the replies over the past years , is replacing the fuel tank the definitive solution to the engine briefly cutting out , as im having these problems in my db9 . speaking about the fuel tank replacement , how much do they cost ?

thanks

Hello!

Not definitive answer - it worked for me for a V8V - along with a new set of catalytic convertors and whatever else the garage did.

This was covered by the warranty for me so I cannot comment on the cost. I do remember being quoted something like 20 or 30 hours of labour. To get the fuel tank out you have to disconnect the torque tube from the engine, dismount the rear suspension subframe, remove the gearbox, relocate some wiring, detach the fuel tank, fit a new tank, purge the fuel lines and then do the rest of that list in reverse order. It's not going to be a cheap fix.

Aston Martin Works Service charge £108 per hour, so about £2,000 - £3,000 for labout plus parts. A catalyst is about £200, I don't know what a fuel tank costs. From dim memory the part is not just the tank, you get a fuel pump and other stuff so it's probably pricey.

This subject has been covered in depth in the Bamford Rose sticky thread.

Mike - if you are reading this - could you chip in here?

Edited by JohnG1 on Wednesday 21st September 06:47

[tootip]

thanks for the reply .

will try to replace the catalyst and have them look at the fuel pump . the car is basically undriveable . emission service signs , engine urgent service signs , time for regular service signs . problem is , dont trust the dealer over here in kuwait . caused me enough hassle over the years that theyre a no-go . thinking of shipping it to a nearby aston martin dealer in saudi arabia or bahrain to get it sorted by an offical AM dealer . I wonder if a software update will reduce some of the problems though .

[rick-derby-]

tootip the cutting out issues related to the v8 vantage, The DB9 has six cats two in each manifold and one each side further back this would be a very costly exercise just to swap to see if it is the problem, the DB9 runs two separate systems one for each side so separate fuel pumps, ecus etc, as the warnings are present have you any fault codes, if not do this first as it is engine related most workshops will have eobd equipment or a reader can be bought of such as ebay (must be can enabled)that can access this system, also an emission test would also help with diagnosis

[tootip]

thanks rick .

the reader according to the specialist mentions a problem with the throttle . i will ask for the catalytic convertors to be replaced and see where this takes me . beautiful car , but been dodged with problems for 6 years .

Edited by tootip on Wednesday 21st September 09:28

[rick-derby-]

throttle forced to default is a common code but not usually an indication of the fault, this usually just means the ecu has seen a problem and shut the system down to prevent damage etc, so not to be disregarded but in most cases not the cause of a fault

[tootip]

seems that there are 2 problems . The first is as rick mentioned the throttle on the left hand side ( lhd db9 ) is defaulting causing the system to "crash" thus the service engine signs + the engine cutting .

according to :

http://www.vehix.com/car-reviews/2005/aston-martin...

Component:VEHICLE SPEED CONTROL: ACCELERATOR PEDAL
Recall Date:Nov 09, 2004
Potential Units Affected:1558
Summary:
ON CERTAIN PASSENGER VEHICLES, THE THROTTLE PEDAL ASSEMBLY CAN BECOME DISPLACED FROM ITS HOUSING.
Consequence:
A DRIVER COULD EXPERIENCE LOSS OF THROTTLE CONTROL, INCREASING THE RISK OF A CRASH.
Remedy:
DEALERS WILL INSPECT AND REPLACE, IF NECESSARY, THE THROTTLE PEDALS. THE MANUFACTURER HAS NOT YET PROVIDED AN OWNER NOTIFICATION SCHEDULE. OWNERS SHOULD CONTACT ASTON MARTIN AT 201-818-8352.
Notes:
ASTON MARTIN RECALL NO. SAR009. CUSTOMERS CAN ALSO CONTACT THE NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION'S AUTO SAFETY HOTLINE AT 1-888-DASH-2-DOT (1-888-327-4236).

will speak to the dealer / or the factory concerning if my car has the same effect .


The other issue , it seems my coolant has been leaking . Been having hot air through the a-c prior to the engine cutting problem . Whenever filled with new coolant , it seems its leaking once again . I do not know if there is a connection between the faulty leaking coolant with the engine cutting and the messages ive been getting , however theyre working on it now to find the source of the leaking .

any info concerning any owners who went over similar problems are greatly appreciated .

[BingoBob]

Sorry for resurrecting this topic, but I would be most interested to know what the outcome / solutions were to the cutting out problem.

My 4.7 is currently suffering from this.

Thanks.

[oceantools]

Hello BingoBob

In the case of myself and others it came down to this:

"Just had a look at some old emails. The car was tweaked mid-November 2009. There is a very brief description of the problem - a "coast-down re-learn procedure had lost it's memory. The code was re-flashed and was confirmed as being retained in memory".

Since they tweaked it coming up to three years ago mine has not missed a beat!

Edited by oceantools on Monday 27th August 15:00

[mjk1]

I've had this exact same problem of momentary cut out on acceleration on my 06 V8V. It's happened no more than 10 times in my year and a half of ownership but very annoying none the less. For the 5 year service I took it to DMS. I mentioned the problem and their approach was to clean the throttle body. In the following months the momentary cutting out still occurred the odd occasion. With the demise of DMS, I took it to Stratstones Derby for the 6 year service a few months ago. I told them of the problem. They reflashed the ECU and the problem hasn't occurred since. The engine also feels much smoother. On startup the pick up from the starter motor is also much more seem less. The car now feels totally different to drive.

[BingoBob]

Thanks, guys. It sounds like an ECU flash is the way to go first.

[Dsisco]

mjk1 said:

I've had this exact same problem of momentary cut out on acceleration on my 06 V8V. It's happened no more than 10 times in my year and a half of ownership but very annoying none the less. For the 5 year service I took it to DMS. I mentioned the problem and their approach was to clean the throttle body. In the following months the momentary cutting out still occurred the odd occasion. With the demise of DMS, I took it to Stratstones Derby for the 6 year service a few months ago. I told them of the problem. They reflashed the ECU and the problem hasn't occurred since. The engine also feels much smoother. On startup the pick up from the starter motor is also much more seem less. The car now feels totally different to drive.

resurecting an old thread

Wondering if anyone can chime in, I have just purchased a 2006 V8 Vantage, this is my 1st aston coming from a myriad of various Porsches & BMW M cars,

Car has done very low mileage, 35,000kms from new with full service history & brand new clutch.

Problem is, every now and then, (particularly if the car has not been warmed up to operating temp before driving) the car seems to go limp mode & starts to run rough, will cutout over 3000rpm & sounds likes its misfires & backfires, with the message ENGINE SYSTEM SERVICE URGENT,

No yellow or red check engine lights come on,

if I turn the car on & off the warning comes off the dash & cars back to normal.

I have scanned the codes straight after & comes up with:

Throttle actuator control system forced, Limited Power

I also have:

Catalyst efficiency below threshold bank 1 &2
But I dont think this is related as I probably need rear 02 sensors & have 200cell cats.

PS, this happened prior to installing the 200 cell cats also so dont think this is related.

Could it be faulty ECU? or software related?

I see in previous post, throttle body change fixed,
but also see a ECU flash has cured it,


I have removed the throttle body & cleaned throughly, including the electrics

seemed okay for a day or too, but has come back last night,

it only seems to do it if driven without fully warming it up, eg: more than 50% throttle input in 1st gear,

could this be a faulty throttle body ?

Wiring problem?

anyone any idea where to start?

Im considering to flash the ecu anyway with velocityap software, should I do that or change the throttle body first?
could it be the fuel tank?

any help would be much appreciated, if I cannot sort it out soon ive considered trading the car back on a GTR

[mjk1]

It sounds like your problem is different to the one mine was suffering 5 years ago. It just lost power and stuttered at the start of acceleration for less than a second and that was the only symptom. As I wrote above, Stratstone Derby updated the ECU with the latest software at the time. It did make a difference and I thought the problem had gone but subsequently it did happen again very infrequently, maybe once or twice a year. Anyway about 3 years ago I started using super unleaded, before it was mostly 95 RON supermarket fuel. I've not had the stutter since using super unleaded, so I'm now convinced that was the main culprit.

However, your problem sounds different, I'd recommend you get it professionally looked at before you give up and trade it in. I've now had mine over 6 years, they are great cars and worth persevering with, they do run well once sorted.

[Dsisco]

stanwan said:

Well they think they have my car sorted. turns out that it was the throttle body playing up. Not sure if it was a sensor or mechanical issue......

From what the tech told me, it was a mismatch between throttle input and sensor position and something to do with the idle control.....


Hope this helps you guys out there....

I am trying to work out the cause of mine, did your full cut? mine seems to cut then go into limp mode,
A restart will seems to fix it & go back to normal

[Leroy007]

My V8v did it However stopped after changing the air filters. Plus a quick throttle body clean