Hello again,
Using 10k resistor does not change much. Just output range changed. After resistor sensor start to give 3. ish v and down to 1.9 ish v.
Anyway today one of our friend which has some car electronics repair experience suggest, maybe ampere of the sensor output was too low. So aduino analog voltage noise (which we detect every analog port of arduino) generates resistance against sensor output.
is this make any sense ?
Regards