Hesitancy at low revs in a Vanquish Volante
Discussion
I seem to be having some issues with hesitancy at low revs in my 2106 Vanquish Volante.
It seems to be most obvious when decelerating to a sharp stop (so coming to the end of a fast dual carriageway) and then immediately rolling onto the accelerator. Rather than the normal immediate pick up, there is sometimes a "wait-1-2-go" feeling. There is occasionally even a "wait-cough-go". Sometimes the tickover is a bit lumpy. I have even had it stall in neutral at a set of lights. Dealer had it for a couple of days and couldn't find any error codes or even replicate the problem.
Can happen when warm or cold. Seems better on higher octane fuel but that might be my imagination. I only ever drive it in sport mode.
I've had three DB9s, a DBS prior to this so I think I am familiar enough with the low rev pick-up characteristics of the V12 engine to know that it's a bit off.
Anyone experienced the same or similar?
It seems to be most obvious when decelerating to a sharp stop (so coming to the end of a fast dual carriageway) and then immediately rolling onto the accelerator. Rather than the normal immediate pick up, there is sometimes a "wait-1-2-go" feeling. There is occasionally even a "wait-cough-go". Sometimes the tickover is a bit lumpy. I have even had it stall in neutral at a set of lights. Dealer had it for a couple of days and couldn't find any error codes or even replicate the problem.
Can happen when warm or cold. Seems better on higher octane fuel but that might be my imagination. I only ever drive it in sport mode.
I've had three DB9s, a DBS prior to this so I think I am familiar enough with the low rev pick-up characteristics of the V12 engine to know that it's a bit off.
Anyone experienced the same or similar?
I had the same thing but at higher revs and in 5th and 6th gear. Happened a few times now. Around 5200 rpm it feels like the fuel is cut t off just for a second and then power comes back in. Very strange but given the speeds involved not something the dealer can look at. They’ve done a full data download on mine now and I’m waiting for them to come back and confirm....
The Vanquish decided to throw its toys out the pram. Engine check light on. Red and amber warning triangles for ‘urgent service’ and ‘emissions service’. This is the car the dealer said was fine a month ago.
It was recovered to the dealer. The warning lights have gone of their own accord. The car is supposedly ‘running perfectly’. The warning lights were a ‘misfire on the main bank’.
The techs have driven the car and think its normal.
I pointed out that I have 17 years and c100,000 miles of experience driving the Aston 6.0l V12. I think I know what the engine should feel like better than they do - and they thought it ‘normal and fine’ before it started having a hissy fit (when I had told them it wasn’t right).
Ho hum.
It was recovered to the dealer. The warning lights have gone of their own accord. The car is supposedly ‘running perfectly’. The warning lights were a ‘misfire on the main bank’.
The techs have driven the car and think its normal.
I pointed out that I have 17 years and c100,000 miles of experience driving the Aston 6.0l V12. I think I know what the engine should feel like better than they do - and they thought it ‘normal and fine’ before it started having a hissy fit (when I had told them it wasn’t right).
Ho hum.
I took my car for a drive with the tech and then drove the dealer's Vanq S as a comparison.
The problem has been that, when the car is transitioning, in first gear, from a trailing throttle to power on, it is either "wait-one-go" (or "wait-cough-go) rather than just "go".
The hesitation was also there in the S but less pronounced - so I think it might be in part the gearbox/throttle mapping. The delay on my car is perhaps half a second, the Vanq S a quarter second. Not as bad but still there. The tech agreed my car was worse (though I suspect he thought I was being overly sensitive).
However, the car also did its "wait-cough-go" and the tech confirmed that behaviour was definitely not right. He suspects a dirty throttle body but will discuss with the head tech on Monday. More data will be sent to AM and more engine and wiring tests on Monday.
The problem has been that, when the car is transitioning, in first gear, from a trailing throttle to power on, it is either "wait-one-go" (or "wait-cough-go) rather than just "go".
The hesitation was also there in the S but less pronounced - so I think it might be in part the gearbox/throttle mapping. The delay on my car is perhaps half a second, the Vanq S a quarter second. Not as bad but still there. The tech agreed my car was worse (though I suspect he thought I was being overly sensitive).
However, the car also did its "wait-cough-go" and the tech confirmed that behaviour was definitely not right. He suspects a dirty throttle body but will discuss with the head tech on Monday. More data will be sent to AM and more engine and wiring tests on Monday.
I had a similar problem on my V8 Vantage Roadster.
I would also get the "cough" when driving on the motorway at a fixed throttle setting for some time and then "flooring" it to pass. Slight hesitation, cough and then go.
Will at AJ Tech cleaned the throttle body during my service this week and this seems to have cleared the "fault" - drives like a dream now.
Hope you get sorted too
I would also get the "cough" when driving on the motorway at a fixed throttle setting for some time and then "flooring" it to pass. Slight hesitation, cough and then go.
Will at AJ Tech cleaned the throttle body during my service this week and this seems to have cleared the "fault" - drives like a dream now.
Hope you get sorted too
AMDBSVNick said:
hashluck said:
Have you driven one Nick?
No matey. Waiting to hear from Nottingham.V8V Pete said:
Instead of the DBSVM or as well as?
Instead of if I can make the numbers work.AMDBSVNick said:
hashluck said:
AMDBSVNick said:
Watching with interest as seriously thinking about Vanquish S 
Have you driven one Nick? 
Not quite epic enough to tempt me out of my non S (as I will never easily replicate my spec) but boy oh boy if you drive one you want one - I drove an S for 3 days so can vouch for it beyond the usual ten minute blast as well. This is a (super)car that works in the real world.
Time for some man maths Nick!
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