coolant temp guage
#1
seattle seven
Thread Starter
coolant temp guage
I have an 85 gsl with a 4 port 13b, the sensor is located in rear iron above ops. I have tested the sensor, guage, and repaired old brittle wiring.
the guage still barely registers. Any advice or experience? I have the dash apart repairing high beams, should I fiddle with the guage?
the guage still barely registers. Any advice or experience? I have the dash apart repairing high beams, should I fiddle with the guage?
#2
Out In the Barn
iTrader: (9)
Did you follow this thread for testing? https://www.rx7club.com/1st-generati...gauge-1074146/. If the gauge tested good, it has to be the sensor.
Because water temp is critical to a rotary, I always suggest adding an after market gauge in addition to the factory one.
Because water temp is critical to a rotary, I always suggest adding an after market gauge in addition to the factory one.
#4
seattle seven
Thread Starter
T-Stat is newish, there are two different senders one has a tapered thread, and the other is straight with a sealing washer. It's an old 70s block, I have a taper fit sender , perhaps I need the other type? Guage has never worked correctly since I bought the car. I have checked the cooling syst and am assured it is working correctly, and at correct op temp..
#6
Have RX-7, will restore
iTrader: (91)
Have you considered that there maybe a partial blockage in the coolant passage where the sender probe sticks into the passage?
If you have a new sender and you are sure the gauge is good, the only issue I would consider is the wiring or a blockage in the coolant passage.
If you have a new sender and you are sure the gauge is good, the only issue I would consider is the wiring or a blockage in the coolant passage.
#7
seattle seven
Thread Starter
Have you considered that there maybe a partial blockage in the coolant passage where the sender probe sticks into the passage?
If you have a new sender and you are sure the gauge is good, the only issue I would consider is the wiring or a blockage in the coolant passage.
If you have a new sender and you are sure the gauge is good, the only issue I would consider is the wiring or a blockage in the coolant passage.
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#9
84SE-EGI helpy-helperton
How the sending unit attaches to your engine is irrelevant if the sensors use the same baseline voltage - which these seem to have.
I'm with the other guys that if you can't get your heater to blow hot - then you have a cold engine condition; thermostat stuck open or clogged heater core, if the engine otherwise seems to come to temperature.
If the heater blows hot air, and your gauge still shows cold - it could be a bad sending unit, or a blockage in that part of the coolant path which is preventing coolant to flow past the sensor, again, if the engine otherwise seems to come up to temp.
If replacing the sending unit with the correct one for that engine, it will at least help you determine if it's a bad sender. After the new sender is in, if it still shows cold on the gauge, then you're back to square one.
I'm with the other guys that if you can't get your heater to blow hot - then you have a cold engine condition; thermostat stuck open or clogged heater core, if the engine otherwise seems to come to temperature.
If the heater blows hot air, and your gauge still shows cold - it could be a bad sending unit, or a blockage in that part of the coolant path which is preventing coolant to flow past the sensor, again, if the engine otherwise seems to come up to temp.
If replacing the sending unit with the correct one for that engine, it will at least help you determine if it's a bad sender. After the new sender is in, if it still shows cold on the gauge, then you're back to square one.
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