Hello,
I bought an old freelander (L314) 1.8 petrol car 3 months ago. I try to repair but not easy to find parts and competent expert. The motor works fine but since about 2 weeks the diag show the o2 sensor (lamp) is fixed .435v (default) and the motor is in open loop state.
I replaced the o2 sensor to a delphi (ES20239-12b1) but I see no changes. I measuered the sensor with a gas lamp and I see the sensor works fine (in the test: 0-0.7v). I checked the heating and i measuerd 14v and the sensor is hot.
I measuered the sensor signal wires with a digital multimeter close to the ecu (7-18 wires) and when i disconnected the lambda i se about 0.67v (may be a transistor opening.
I reconnected the lambda and I measured this 0.67v again. I started the motor and i measured about 0.58v and for a short time 0.3-0.6v.
The MAP value is about 34kpa, coolant 89C. I checked the compression and a little bit more than 14bar so i hink the engine generally in good state. I replaced the air filter, oil, sparks, etc.
Anybody has an idea whats wrong, is it an ECU or other problem, or may be the deplhi sensor is not really compatible?
Tanks ,
Tom M.
I bought an old freelander (L314) 1.8 petrol car 3 months ago. I try to repair but not easy to find parts and competent expert. The motor works fine but since about 2 weeks the diag show the o2 sensor (lamp) is fixed .435v (default) and the motor is in open loop state.
I replaced the o2 sensor to a delphi (ES20239-12b1) but I see no changes. I measuered the sensor with a gas lamp and I see the sensor works fine (in the test: 0-0.7v). I checked the heating and i measuerd 14v and the sensor is hot.
I measuered the sensor signal wires with a digital multimeter close to the ecu (7-18 wires) and when i disconnected the lambda i se about 0.67v (may be a transistor opening.
I reconnected the lambda and I measured this 0.67v again. I started the motor and i measured about 0.58v and for a short time 0.3-0.6v.
The MAP value is about 34kpa, coolant 89C. I checked the compression and a little bit more than 14bar so i hink the engine generally in good state. I replaced the air filter, oil, sparks, etc.
Anybody has an idea whats wrong, is it an ECU or other problem, or may be the deplhi sensor is not really compatible?
Tanks ,
Tom M.
