![]() |
|
|
|
#1
|
||||
|
||||
![]()
Hello group,
The '86 300E is having rought idle . I checked the Duty Cycle on diagnostic port while the Engine was running (operating temperature) , it is stuck at a very low number (7 percent). It used be hovering around 50 percent few months ago. I am not sure what would cause the wrong reading now. I did the following tests: - Disconnecting the O2 sensor corrected the duty cycle (showed 50 percent) . - Disconnecting the temp sensor plug going to ECU made no difference in reading. - Disconnecting the temp sensor plug going to ignition control unit increased the duty cycle. - Checked the voltage at the output of O2 sensor , it is about 480 mV which I think is the correct one. Does this mean I have a bad O2 sensor , a bad temp sensor plug or something else? Any suggestion is appreciated.
__________________
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) Last edited by zorin; 09-03-2003 at 11:57 AM. |
Bookmarks |
|
|