Thanks Duke.

The car idles OK. It's just that the duty cycle on pin 3 is stuck at 17%, and the O2 sensor output is too high (close to 1 Volt - fixed).

I looked up this code and it points to Throttle Valve switch.
Where is the screw and locknut throttle valve stop so I can adjust it.

Thanks

__________________
Zorin

'88 Benz 420 SEL
'79 Porsche 911SC ('87 Carrera Engine)
'00 BMW 540 Sports Package
'99 Land Rover Discovery

86 300E - Manual (sold)
88 260E (sold)
84 944 (sold)