So got myself a new ride a 1993 rx-7 infini twin turbo body is in excellent condition but I do have one problem and really need help before I poke a hole in my ears. I have a buzzing in the car which I believe is fron the add coolant light that is on. I know the coolant is full and for the first drive that I was on I was in the car for 3 hours and it never overheated or ran off at all it drove and ran mint but like I wrote the buzzing will not stop and I am new to rotorys actually my first one and I really need to know what I need to do . thanks for any help.

 

Check the sender on the top of the rad and make sure that the wire is hooked up.It is a single wire(low coolant sender).

 

Find the buzzer and hit it with a BFH

 

Also, make sure there are no air bubbles around the sensor by bleeding the cooling system.

 

FD's have NO sensor on the rad, but it could be the low coolant sensor which is on the water pump housing or most likely the wire is broken or unplugged from the body harness which is located near the power steering (small black plug).

 

Thanks for the suggestions and I will check the sending unit and the wires. Now who knows of some one in the toronto Barrie area that really knows these rotory motors so I can get her tuned and fully checked out.

 

I had the same problem
The wire broke off the connector and was left dangling there.
Right above the spark plugs
cant miss it

 

Head over to the Canadian forum and take a look at the rotary shop sticky thread.

 

My new FD (just once) wouldn't stop buzzing right after I started it in cold weather???? I couldn't figure out why but after turning it off and restarting it it was gone. Anyone have a clue why that could have happened??

 

Air bubble in the AST. Assuming it was a coolant warning...

 

mine did this, I changed the sensor, still did it....then it started bursting radiators so I thought it was a faulty O ring which needs a rebuild.

 

well this thing is still buzzing but everything else is running nice I figure I am going to let it be for awhile and work on my skyline or my moms 240 I am building her

 

cool, is that Barrie down in the depths of Wales?

 

No Barrie ontario canada