NoPistons -Mazda Rx7 & Rx8 Rotary Forum

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-   3rd Generation Specific (https://www.nopistons.com/3rd-generation-specific-18/)
-   -   Coolant Buzzer (https://www.nopistons.com/3rd-generation-specific-18/coolant-buzzer-5049/)

twinturborx7pete 09-06-2002 02:05 AM

Ok, coolant is full, its all bled, triple checked it, now i'm beginning to think the buzzer is going off because of electrical reasons, ie. its not hooked up? where does the buzzer get its signal from? i want to make sure the connection is there and that its not just buzzing because it isn't reading any resistance.... any body know? where it is?

turbovr6 09-06-2002 05:27 AM

it's a small 1 wire sensor that screw into the thermostat housing. (next to alternator,small silver rad.cap)

Fd3BOOST 09-06-2002 08:10 AM

It gets its reading from the "coolant level sensor" in the filler neck. The part will cost you about $80. It's possible that your sensor is bad. However it is unlikely that it is your problem. How long have you had this problem?

twinturborx7pete 09-06-2002 11:45 AM

ever since i rebuilt the engine, its been driving me nuts, i am damn sure that i have bled all the air out!

twinturborx7pete 09-07-2002 03:48 AM

is there anyway to check the voltage on the sensor? i think i might need a new one... my car never gets hot, and the ast, overflow, and filler cap are all the way to the top... i've tried every bleeding procedure, i'm sure its the sensor.

Fd3BOOST 09-07-2002 07:48 AM

i would not know how the hook a volt meter on to the sensor. If your sure then just replace it and be done with it.

jspecracer7 09-07-2002 06:25 PM

I just grounded mine...



Could also be the oil pressure sensor. If you don't hook that up, it will buzz too...I know this because I hooked mine up wrong(connected it to something else) and it buzzed for 2 days straight! https://www.nopistons.com/forums/pub...IR#>/angry.png

Fd3BOOST 09-08-2002 08:40 AM

That happened to Ryan also^^^

twinturborx7pete 09-08-2002 02:33 PM

there isn't a fuse i can just pull for now?

j9fd3s 09-09-2002 11:25 AM

the sensor (oil level and water level), are just switched grounds. you need to find out where the wire is grounding. the sensor is located in the front of the tstat housing, below the filler cap



mike


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