5Liter, yes it does have a cam sensor which I hear can go bad. I have one on the way just to say it's been replaced. I don't think it's the issue but am going through all sensors that are known to go bad over time as preventive maint.
Photodude, agree and you hit exactly my concern around injector testing. This thing runs absolutely flawlessly except at high RPM. It's not load specific either as proven by light throttle high rpm setting the code also. I've thought about injector removal for cleaning...don't know where I'd send them though. I see some on-line companies that do this type of work exclusively and surprisingly doesn't look to be very expensive at all.
It looks easy enough to take them out.
I've been running Liqui-Moly cleaner, but will take a while to get through a tank or two.
Car has extensive records indicating great maintenance, but I have no idea what kind of fuel was purchased by PO. I have been running exclusively 92 octane (as high as I can get around here) high quality but non-ethanol (which is also very hard to find around here) as it doesn't degrade as quickly from what I understand.
Photodude, agree and you hit exactly my concern around injector testing. This thing runs absolutely flawlessly except at high RPM. It's not load specific either as proven by light throttle high rpm setting the code also. I've thought about injector removal for cleaning...don't know where I'd send them though. I see some on-line companies that do this type of work exclusively and surprisingly doesn't look to be very expensive at all.
It looks easy enough to take them out.
I've been running Liqui-Moly cleaner, but will take a while to get through a tank or two.
Car has extensive records indicating great maintenance, but I have no idea what kind of fuel was purchased by PO. I have been running exclusively 92 octane (as high as I can get around here) high quality but non-ethanol (which is also very hard to find around here) as it doesn't degrade as quickly from what I understand.