2011 V8 Vantage - “Camshaft Correlation” Issues

[Kennethd]

Hey group, I’m new to the AM world, and so far I’m loving every part of it. I recently acquired a 2011 V8V and have ran into an issue that I’m trying to solve. Was curious if anyone here has faced a similar issue or has any insight on how I can go about fixing things. 20k original kms on the car fwiw, probably why it’s giving issues since it’s barely been driven in its lifetime 🤦‍♂️.

CEL is on and I have a bunch of codes that lit up in regards to engine timing being off as well as some misfires. The exact codes are:

P0016: camshaft position correlation Bank 1 sensor A
P0018: camshaft position correlation Bank 1 sensor B
P0022: intake camshaft position timing over retarded Bank 2
P0300: random misfire
P0302: cylinder 2 misfire
P0308: cylinder 8 misfire
P0316: misfire detected on startup (first 1000 revs)

(Cylinder misfire codes often change cylinders after erases and rescans or sometimes don’t even show up during scanning so I doubt it’s ignition related.)

The car itself still runs and drives good, with only a slight misfire noticeable at idle, nothing too severe it seems/feels. I’ve tried swapping coils and plugs for those cylinders to determine whether it was ignition related but that did not give any positive results, so my next area of interest was the variable valve timing solenoid, camshaft position sensors, or timing chain.

I was advised by Velocity to datalog cam angles, which I’ll have to check on Monday since my scanner doesn’t read that data, but was hoping for any other expert advise from this group in the meantime.

Thank you kindly,

Ken

[N7GTX]

A stretched timing chain could give the first 3 codes which in turn will give the rest. Lumpy/misfiring at idle but okay as you rev up points to a chain issue as the slack is taken up as the engine speed increases. You will get no camshaft/crankshaft correlation with a slack chain as both camshaft and crankshaft sensors must trigger at the same time to ensure accurate ignition firing.

[Kennethd]

N7GTX said:

A stretched timing chain could give the first 3 codes which in turn will give the rest. Lumpy/misfiring at idle but okay as you rev up points to a chain issue as the slack is taken up as the engine speed increases. You will get no camshaft/crankshaft correlation with a slack chain as both camshaft and crankshaft sensors must trigger at the same time to ensure accurate ignition firing.

Thank you for your response,

Is it possible to have a stretched timing chain without any timing chain clatter sound? Also, have you seen such an issue on a low mileage 4.7 before?

[N7GTX]

I have not personally done a Vantage but have many other makes. (I know its swearing on the AM forum but the lowest mileage stretched chain was just over 2,000 miles on a Peugeot 207).
I see you have found the other thread with a similar problem. In that thread is a contact - James Appleby at David Appleby - who must be worth a call.

https://www.davidapplebyengineering.com/

[Kennethd]

N7GTX said:

I have not personally done a Vantage but have many other makes. (I know its swearing on the AM forum but the lowest mileage stretched chain was just over 2,000 miles on a Peugeot 207).
I see you have found the other thread with a similar problem. In that thread is a contact - James Appleby at David Appleby - who must be worth a call.

https://www.davidapplebyengineering.com/

Hi,

Thanks for your reply. Yes, I contacted James last week and he was the one that guided me to contacting VelocityAP. Just waiting until next week to get my hands on a better scanner to datalog cam angles, as they’ve advised.

[Leroy007]

Hi all, just poking my nose in on this topic. My V8V occasionally takes twice the turn over to fire up. Runs fine no issues maybe a juddery at very slow traffic speeds. No too bad. No fault codes. I’ve been advised by an Aston tech it’s probably the cam sensors. Nice easy job I thought. They’re right in the v under the wind screen. Has anyone attempted changing them. Looks like a air manifold off. £70 part and plenty of hours labour.any knowledge on this one would be greatly appreciated. Happy new year.

[N7GTX]

In view of the amount of work involved I'd be very reluctant to replace the sensors without a confirmed diagnosis. The chances of the sensors failing together are miniscule. On proper Aston diagnostic equipment you should be able to see the readings from the sensors as you turn the engine over and when its running. Unless at least one gives a false reading or no reading at all then the problem is more likely to be the chain stretching if timing related fault codes are found on a diagnostic test.

[ridds]

Kennethd said:

Hey group, I’m new to the AM world, and so far I’m loving every part of it. I recently acquired a 2011 V8V and have ran into an issue that I’m trying to solve. Was curious if anyone here has faced a similar issue or has any insight on how I can go about fixing things. 20k original kms on the car fwiw, probably why it’s giving issues since it’s barely been driven in its lifetime ?????.

CEL is on and I have a bunch of codes that lit up in regards to engine timing being off as well as some misfires. The exact codes are:

P0016: camshaft position correlation Bank 1 sensor A
P0018: camshaft position correlation Bank 1 sensor B
P0022: intake camshaft position timing over retarded Bank 2
P0300: random misfire
P0302: cylinder 2 misfire
P0308: cylinder 8 misfire
P0316: misfire detected on startup (first 1000 revs)

(Cylinder misfire codes often change cylinders after erases and rescans or sometimes don’t even show up during scanning so I doubt it’s ignition related.)

The car itself still runs and drives good, with only a slight misfire noticeable at idle, nothing too severe it seems/feels. I’ve tried swapping coils and plugs for those cylinders to determine whether it was ignition related but that did not give any positive results, so my next area of interest was the variable valve timing solenoid, camshaft position sensors, or timing chain.

I was advised by Velocity to datalog cam angles, which I’ll have to check on Monday since my scanner doesn’t read that data, but was hoping for any other expert advise from this group in the meantime.

Thank you kindly,

Ken

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Drop me a message as I may be able to help.