J
jpackett
Guest
MAF Sensor Rebuild
I would really love some feedback on a faulty MAF Sensor (ESR1057, 1993 Classic). I had done a diagnosis as per the following instructions listed below. I could only measure. 0.08V between Ground and CO Trim wires. As I turned the screw on the side of the airflow meter nothing changed. No matter what I did I could not get the reading to move from 0.08V. From this I am assuming my MAF is dead. But at $650 - $700 ouch. Can you rebuild these, can you service them? How the heck did disco99 fix his MAS sensor for $40?
Diagnostic for MAF courtesy of http://www.rpiv8.com/carbs-2.htm#setting-up
(The air flow meter wires can be accessed by pulling the rubber boot carefully backwards along the cable. Under here you will find the following wires. Red with Black trace = Sensor ground, Blue with Green trace = air flow signal, Brown with Orange trace = Ignition live 12 volts and Blue with Red trace = CO trim value. A digital multi meter should be used and connected to the sensor ground and CO trim value wires. The values that you are trying to achieve are below and these are adjusted by the screw on the side of the airflow meter.
Air Mass meter setting (non cat). The voltage reading on the CO value here should be between 1.0 and 1.5.
Air Mass meter setting (cat). The best setting for the CO value here is 1.8 volts.
When setting your Throttle potentiometer and Air Mass/flow meter, you should also check the resistance scaling, using an Ohms meter and checking from highest to lowest resistance, smooth scaling is essential for the correct basic workings of all these units.)
I would really love some feedback on a faulty MAF Sensor (ESR1057, 1993 Classic). I had done a diagnosis as per the following instructions listed below. I could only measure. 0.08V between Ground and CO Trim wires. As I turned the screw on the side of the airflow meter nothing changed. No matter what I did I could not get the reading to move from 0.08V. From this I am assuming my MAF is dead. But at $650 - $700 ouch. Can you rebuild these, can you service them? How the heck did disco99 fix his MAS sensor for $40?
Diagnostic for MAF courtesy of http://www.rpiv8.com/carbs-2.htm#setting-up
(The air flow meter wires can be accessed by pulling the rubber boot carefully backwards along the cable. Under here you will find the following wires. Red with Black trace = Sensor ground, Blue with Green trace = air flow signal, Brown with Orange trace = Ignition live 12 volts and Blue with Red trace = CO trim value. A digital multi meter should be used and connected to the sensor ground and CO trim value wires. The values that you are trying to achieve are below and these are adjusted by the screw on the side of the airflow meter.
Air Mass meter setting (non cat). The voltage reading on the CO value here should be between 1.0 and 1.5.
Air Mass meter setting (cat). The best setting for the CO value here is 1.8 volts.
When setting your Throttle potentiometer and Air Mass/flow meter, you should also check the resistance scaling, using an Ohms meter and checking from highest to lowest resistance, smooth scaling is essential for the correct basic workings of all these units.)
