2017 DB11 wont rev above 3000 RPM’s
Discussion
Greetings everyone. I’m hoping some of you experts can help me figure out this issue. My 2017 DB11 V12 will not shift above 3000 rpm’s. 5 out of 10 times, if I turn it off and back on it will be fine. The exhaust motors were just changed but the issue still persists. There are not alerts and no indications of a misfire. I did notice that the drivers side exhaust valve does try to actuate one the car is off. Please let me know your thoughts and I appreciate all of your support.
Edited by Jlwarren007 on Sunday 30th April 18:33
Jlwarren007 said:
Greetings everyone. I’m hoping some of you experts can help me figure out this issue. My 2017 DB11 V12 will not shift above 3000 rpm’s. 5 out of 10 times, if I turn it off and back on it will be fine. The exhaust motors were just changed but the issue still persists. There are not alerts and no indications of a misfire. I did notice that the drivers side exhaust valve does try to actuate one the car is off. Please let me know your thoughts and I appreciate all of your support.
Just had the same issue fixed on my DB11 V12...same year.Edited by Jlwarren007 on Sunday 30th April 18:33
It is the electronic thingy that controls the exhaust valves that is at fault and needs replacing.
pschlute said:
Jlwarren007 said:
My check engine light is off and the car never has any alerts. Both exhaust valve motors were just replaced 3 weeks ago but the issue still persist.
Take it back to the dealer who did the repair. Hello I have a 2017 db11 that shifts at 3,000 half the time but in manual mode you don't have to touch the pedals it shifts by itself at $3,000 this is similar the problem just discussed it has an aftermarket exhaust on it without valve activation I bought it that way I didn't hear from the original poster what the final solution was if you read this please inform me Aston seems to be at a loss for what it is
GPMDB11 said:
Hello I have a 2017 db11 that shifts at 3,000 half the time but in manual mode you don't have to touch the pedals it shifts by itself at $3,000 this is similar the problem just discussed it has an aftermarket exhaust on it without valve activation I bought it that way I didn't hear from the original poster what the final solution was if you read this please inform me Aston seems to be at a loss for what it is
It's likely that the lack of any exhaust valve motors is causing an issue. I know that if you just unplug the motors, it puts the engine into "safe mode", so if you have an aftermarket exhaust with no valves they must have used some kind of valve eliminator. This is what I know the ECU does:On start-up, the ECU learns the valve position by fully opening them and fully closing them again. If the valve motors are not attached to the exhaust valves (some people have tried leaving them plugged in but not bolted to the valve) the motors keep spinning because they never reach the open/closed position and it errors - putting the engine into a "safe" mode. Some after market exhaust companies sell a valve motor eliminator, which trick the ECU into thinking that the motors are attached and working fine, but I don't know how good they are. The other way some people do it is to leave the valve motors connected but attach a device that behaves like a valve does and makes the ECU pass the open/close check. This is one such device, it's for a Merc but it works the same way:
https://www.peregrineperformance.co.uk/product/arm...
I would say the first step would be to find out how they got around the ECU valve check. If they used electronic eliminators, one may have failed or something may have changed to stop it working. If the motor cables are clipped up under the car with nothing plugged into them, you'll need to find out how the people who fitted the aftermarket exhaust got around the valve check. I suspect that's where the issue is...
HTH
Edited by AMGWiz on Friday 5th April 16:28
Thank you very much for your response I'm not sure asked it in the UK asked my service manager to take pictures of the exhaust system and send it to them but they'd be looking into this for weeks ice happen to have a db11 original exhaust because this is my second db11 and I put Quicksilver valve activated exhaust on my first db11 and it worked fine just like the stock one just sounded better so I kept the stock one and I have it and I keep asking them to put it in let's see what works or not but they refuse to do that so far like I say I appreciate your response I bought the car like this it was shifting at 3,000 on day one but we stop and restart the car it may work fine for a while and then screw up while driving either way the original poster here said his car won't shift over 3,000 that's the same as mine but it does shift at 3,000 I believe he never said that but I think that's what he means anyways once again I'm going to pass your comments on to my service advisor I mean what the hell I got the original exhaust in my garage let's just put it in and see
GPMDB11 said:
Hello I have a 2017 db11 that shifts at 3,000 half the time but in manual mode you don't have to touch the pedals it shifts by itself at $3,000 this is similar the problem just discussed it has an aftermarket exhaust on it without valve activation I bought it that way I didn't hear from the original poster what the final solution was if you read this please inform me Aston seems to be at a loss for what it is
HiIf I remember correctly, my problem on a 2017 V12 DB11 with stock exhausts, was cased by an electronic component failing, and not sending a signal to one of the exhaust valves to open. So the car would always shift up a gear at 3,000 rpm even in manual.
It was solved by replacing the electronic module, not the mechanical valves.
If you have an aftermarket exhaust, have you spoken to the manufacturers ?
Thanks for your answer and help, unfortunately the car was imported to Canada from United States I've checked the Carfax can't trace who and when change the exhaust but you're right that's exactly what's happening I fortunately have original db11 exhaust which they're installing now I'm hoping this solves the problem unless there's something wrong with the stock exhaust also, it's kind of sad because I really like the aftermarket sound may consider Quicksilver valve activation system down the road thanks again
GPMDB11 said:
Thanks for your answer and help, unfortunately the car was imported to Canada from United States I've checked the Carfax can't trace who and when change the exhaust but you're right that's exactly what's happening I fortunately have original db11 exhaust which they're installing now I'm hoping this solves the problem unless there's something wrong with the stock exhaust also, it's kind of sad because I really like the aftermarket sound may consider Quicksilver valve activation system down the road thanks again
That sounds like the simplest and most effective approach, to re-fit the originals. Good luck.GPMDB11 said:
Thanks for your answer and help, unfortunately the car was imported to Canada from United States I've checked the Carfax can't trace who and when change the exhaust but you're right that's exactly what's happening I fortunately have original db11 exhaust which they're installing now I'm hoping this solves the problem unless there's something wrong with the stock exhaust also, it's kind of sad because I really like the aftermarket sound may consider Quicksilver valve activation system down the road thanks again
HiFurther to your message regarding the replacement of the faulty module, I cannot recall which specific part was replaced. It was all done under extended warranty cover.
My understanding was it was a module that signalled to the exhaust valves to open. I think it was just one exhaust pipe that was affected.
When I spoke to the service department of my local AM dealer and described the problem, he immediately said he was 99% sure what the issue would be, and that it was an easy fix to replace the module.
pschlute said:
Hi
Further to your message regarding the replacement of the faulty module, I cannot recall which specific part was replaced. It was all done under extended warranty cover.
My understanding was it was a module that signalled to the exhaust valves to open. I think it was just one exhaust pipe that was affected.
When I spoke to the service department of my local AM dealer and described the problem, he immediately said he was 99% sure what the issue would be, and that it was an easy fix to replace the module.
yes that is the problem, Aston finally agrees that the exhaust valve "actuators" are at fault, they installed my old stock system and one actuator was stuck and not positioning the valve properly, sitting to long can cause this, either way ordered two new ones which should resolve everything, thanks again.Further to your message regarding the replacement of the faulty module, I cannot recall which specific part was replaced. It was all done under extended warranty cover.
My understanding was it was a module that signalled to the exhaust valves to open. I think it was just one exhaust pipe that was affected.
When I spoke to the service department of my local AM dealer and described the problem, he immediately said he was 99% sure what the issue would be, and that it was an easy fix to replace the module.
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