Coolant Temp Sensor...
#1
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Too many posts.. I need a life!!
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From: Southend, Essex
Coolant Temp Sensor...
Hi chaps.
Mk4 fiesta. Coolant temp sensor for the dash is a 1 wire type. 12v sent from the dash to the sensor, and the sensor varies resistance depending on heat and earths to the engine block.
Anyone happen to know if it changes the flow of current or voltage?
Thanks
Mk4 fiesta. Coolant temp sensor for the dash is a 1 wire type. 12v sent from the dash to the sensor, and the sensor varies resistance depending on heat and earths to the engine block.
Anyone happen to know if it changes the flow of current or voltage?
Thanks
#2
Your coolant temp sensor works on the earth side, then the other side of the temp clock as an ignition feed to it, so when you disconnect the wire off sensor and put it to earth it should go to the top.
As your question : as the coolant temp increases, the resistance value and the signal voltage decrease.
As your question : as the coolant temp increases, the resistance value and the signal voltage decrease.
#3
Thread Starter
Too many posts.. I need a life!!
Joined: Jan 2010
Posts: 655
Likes: 7
From: Southend, Essex
Your coolant temp sensor works on the earth side, then the other side of the temp clock as an ignition feed to it, so when you disconnect the wire off sensor and put it to earth it should go to the top.
As your question : as the coolant temp increases, the resistance value and the signal voltage decrease.
As your question : as the coolant temp increases, the resistance value and the signal voltage decrease.
Matt
#5
Thread Starter
Too many posts.. I need a life!!
Joined: Jan 2010
Posts: 655
Likes: 7
From: Southend, Essex
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