Coolant Thermo Sensor
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FC4ME
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Coolant Thermo Sensor
I recently had my check engine light came on and the code told me it was the coolant thermo sensor. I searched thru the Haynes Manual and several online shop manuals and have yet to find an accurate description as to where it may be. I have an idea of where i think it should be but i'm not sure. Can anyone tell me where it is so i can fix this?
1990 Convertible w/ 5spd
1990 Convertible w/ 5spd
#2
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Originally Posted by 90WhiteVrt
I recently had my check engine light came on and the code told me it was the coolant thermo sensor. I searched thru the Haynes Manual and several online shop manuals and have yet to find an accurate description as to where it may be. I have an idea of where i think it should be but i'm not sure. Can anyone tell me where it is so i can fix this?
1990 Convertible w/ 5spd
1990 Convertible w/ 5spd
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Originally Posted by rs_1101
yea i was fairly sure that the sensor on top of the rad was the level sensor.
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#8
I R SAD PANDA W/O BAW
water level sensor = on top of rad
water thermo sensor = back of waterpump housing
water temp sensor = on the block next to oil pressure sender
The only one you really need to run the car is the water thermo sensor because it sends signals to the ECU, the other ones should work of course though and are vital as well.
water thermo sensor = back of waterpump housing
water temp sensor = on the block next to oil pressure sender
The only one you really need to run the car is the water thermo sensor because it sends signals to the ECU, the other ones should work of course though and are vital as well.
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Originally Posted by ilike2eatricers
water thermo sensor = back of waterpump housing
water temp sensor = on the block next to oil pressure sender
water temp sensor = on the block next to oil pressure sender
#11
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sometimes the sensor is fine, just has been accidentally unplugged or, in my case, the metal connectors on the inside of the main plastic connector (from wiring harness) have been shoved back and no making a connection. if you find that you do in fact need the sensor, i have one (brand new in box from mazda) for sale. i found i didn't need it.
#12
I R SAD PANDA W/O BAW
Originally Posted by NZConvertible
Just to clarify this a bit, the ECU's thermosensor is on the back of the water pump housing and the temp gauge's sender is on the block next to oil pressure sender.
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Originally Posted by foild
its weird.. last night i saw mine popped out... i guess i need a new thermo sensor... i wonder how long i have been driving with t like this...
again, if you find you definately need one, i have a brand new one for sale.
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Originally Posted by brakar
A little off topic but.... What is the sensor that is on the bottom driver's side of the rad. Its on an s4. Two wires going to it. Thanks
It's a Water Temp Switch. It effects the emissions, in particular the Relief Solenoid and also effects the cold start up where the engine revs to approx 3000rpm on start up. If the water temp is seen as too cold ........it won't rev the engine that high.
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Originally Posted by HAILERS
It's a Water Temp Switch. It effects the emissions, in particular the Relief Solenoid and also effects the cold start up where the engine revs to approx 3000rpm on start up. If the water temp is seen as too cold ........it won't rev the engine that high.
Once again sorry for getting off topic
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