occasional cough on V8V
Discussion
Folks
Last two times I've taken the beasty out it's had a little cough for no good reason. IIRC I was accelerating, not especially hard and it was a complete loss of power for no more than a second. Is this the much fabled throttle body clean required or the occasionally discussed fuel tank malady.
I have had this perhaps 3 times previously in the whole 5.5 years of ownership but twice in two trips out is getting a bit more vexing.
I really struggle to believe it could be tank related as once it has cleared it's like nothing was wrong.
It's a MY07 and is running on 98RON
Any thoughts?
Last two times I've taken the beasty out it's had a little cough for no good reason. IIRC I was accelerating, not especially hard and it was a complete loss of power for no more than a second. Is this the much fabled throttle body clean required or the occasionally discussed fuel tank malady.
I have had this perhaps 3 times previously in the whole 5.5 years of ownership but twice in two trips out is getting a bit more vexing.
I really struggle to believe it could be tank related as once it has cleared it's like nothing was wrong.
It's a MY07 and is running on 98RON
Any thoughts?
This happened to me some years ago on three different V8 Vantages (two I owned and one they loaned me). After a long, long, long investigation it was finally found that there was a software bug (what a surprise!). For whatever reason, the ECU thought the car was on the overrun and went into a recalibration mode. This had the effect of the engine cutting out briefly. Mine was sorted out three or four years ago and has not missed a beat since! Your local dealer will hopefully point you in the right direction.
My 07 V8 had similar problem, it held back for a split second then lurched back to where it would have been. Then within a couple of days the limiter cut in with the 'return to dealer' message and put me in limp mode.
1st time the AA (Aston guys not the yellow van)cleaned the throttle body.
2nd time (2 weeks later) went to Works service who changed the throttle body.
3rd time (another 2 weeks later) changed the ECU.
4th time (guess the timing!) not sure what they did but they said they think they fixed it.
I got the car back just before Christmas. The battery died on me in January and the same AA guy came out, he seemed one of the real curious types so he went and did his homework after the call out. He said that Aston seem to think that there is a barometric sensor which plays up, I'm sure he said it's in the boot area somewhere. he said it's not serious and if you switch off and on again it will reset itself, he also said it was nothing serious and didn't warrant a call out as they could be attendind more serious emergencies. Let's hope that if I go for a gap on a dual carriageway and the limiter kicks in dropping my revs down to about 1500rpm I'll have time to switch off and on again
About a month ago, the cough happened and low and behold the next day the limiter kicked in, I went on holiday the next day andit hasn't happened since.
About a
1st time the AA (Aston guys not the yellow van)cleaned the throttle body.
2nd time (2 weeks later) went to Works service who changed the throttle body.
3rd time (another 2 weeks later) changed the ECU.
4th time (guess the timing!) not sure what they did but they said they think they fixed it.
I got the car back just before Christmas. The battery died on me in January and the same AA guy came out, he seemed one of the real curious types so he went and did his homework after the call out. He said that Aston seem to think that there is a barometric sensor which plays up, I'm sure he said it's in the boot area somewhere. he said it's not serious and if you switch off and on again it will reset itself, he also said it was nothing serious and didn't warrant a call out as they could be attendind more serious emergencies. Let's hope that if I go for a gap on a dual carriageway and the limiter kicks in dropping my revs down to about 1500rpm I'll have time to switch off and on again
About a month ago, the cough happened and low and behold the next day the limiter kicked in, I went on holiday the next day andit hasn't happened since.
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