Mazda Millenia This sedan, the flagship luxury sedan, offers both a naturally aspirated and supercharged model, so you can have your luxury, and, if you have a need for speed, big horsepower.

1 wire knock sensor to 2 wire knock sensor

  #1  
Old 12-16-2006, 02:13 PM
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Default 1 wire knock sensor to 2 wire knock sensor

The car is a 2000 milly, That originally had a two wire sensor. Girlfriend hits a dog, runs the car hot, Long story short, new motor is a 99, with a bad knock sensor which turns out to be a one wire. So we got the original sensor, and I'm looking at both sensors now. I understand that one wire should be the ground, assuming the red is pos and black with white stripe is neg but the question for that is what do i do? how do i plug this two wire plug into the one wire plug on the car? i removed the orange tab on the inside like a mazda world member told me to but there seems to be no metal wire exposed for the one wire of the plug to touch? i don't get it? do i just cut the plugs out and solder the wires and ground the other one or what!
 
  #2  
Old 12-16-2006, 10:47 PM
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Default RE: 1 wire knock sensor to 2 wire knock sensor

well, i'm confused. checking mazda epc, for the 2.3, there is only 1 part number. for 2.5, there are 2, BUT, the later part number superseeds to KLY1-18-S50, and fits 97-up. checking our 99 wiring diagrams, the 99 2.5 has 2 wires, red and grey/yellow, which seem to join together. the 2.3 has a single white wire. have you possible gotten the wrong motor? iirc, no major changes were done until 2001 my and later. 2000 my and before were basically all the same.
 
  #3  
Old 12-17-2006, 03:19 AM
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Default RE: 1 wire knock sensor to 2 wire knock sensor

well the car is not supercharged, so im assuming its a 2.5 but whats so weird is the knock sensor on this motor is a single white wire, but the one from the other motor is two wires. so i am at a complete loss with this thing and there are parts laying all over my garage haha
 
  #4  
Old 12-17-2006, 10:31 PM
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Default RE: 1 wire knock sensor to 2 wire knock sensor

a single white wire tells me that the sensor is off of a 2.3. if this was a short block, might be someone slammed you with a 2.3 instead of a 2.5. where did the motor come from?
 
  #5  
Old 12-19-2006, 06:45 PM
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Default RE: 1 wire knock sensor to 2 wire knock sensor

I thought the motor came from another car. I am going to the shop where to motor was installed tomorrow, will let you know what I find out. If it was a 2.3 it was running surprisingly well with a regular intake on it, just throwing a knock sensor code!
 
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