95 XJS V12 limp home
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If check engine light not on it could have been an intermittent fault.
FF67 is a fault associated with air injection pump.
This device is not fitted in all markets where XJS V12 was supplied.
It's part of emission control system:
Lambda sensor control fuel air mixture and hence exhaust emissions. They take a short time to get up to working temperature (heated by exhaust gas and electrical heater)
Air pump is used to inject air into exhaust to speed up this warm up of sensor.
Pump is driven by belt from engine via a clutch, it only operates for 45 seconds after engine start.
My engine not fitted with the system, many who did have it fitted choose to remove it.
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sayitaintso
XJ XJ8 / XJR ( X308 )
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05-02-2016 09:31 AM
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