water temps issue
Just recently picked up my FD RX7 and I'm having an issue with the water temps. On idle the water temps are at 95 celsius while it is very cold outside. When I'm doing normal driving temps get up to 111 celsius. Highest I've seen it reach was 121. Coolant temps stay normal. Any suggestion on what it could be? I drove the car aggressively one night and water temps got to 118 celsius and it was a cold night 35 Fahrenheit. Is this normal or are the water temps supposed to be lower?
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definitely running hot.
what mods do you have? |
Originally Posted by cr-rex
(Post 12517592)
definitely running hot.
what mods do you have? |
Still have the air pump? You sure the cooling system is bled properly? Fans spinning the correct direction?
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Originally Posted by cr-rex
(Post 12517602)
Still have the air pump? You sure the cooling system is bled properly? Fans spinning the correct direction?
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Originally Posted by garry cage
(Post 12518037)
what coolant do u use ? any update ?
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Your 111 Celsius = 231 Fahrenheit just for reference.
In my drift t2 fc, I normally have temps around 190 Fahrenheit. After a few laps of WOT, I’ll let it cool down once I get around 205 fahrenheit. You’re pushing the limits. Definitely should verify if the sensor is correct. Even if the “average” coolant temp is 111 degrees, there could be boiling coolant on the hottest parts of the engine, the coolant jacket surface of the housings and irons. I know that a fc needs an under tray or fc guys have issues with higher coolant temps, especially while at freeway speeds when the clutch fan is not working. |
Originally Posted by DR_Knight
(Post 12518049)
Your 111 Celsius = 231 Fahrenheit just for reference.
In my drift t2 fc, I normally have temps around 190 Fahrenheit. After a few laps of WOT, I’ll let it cool down once I get around 205 fahrenheit. You’re pushing the limits. Definitely should verify if the sensor is correct. Even if the “average” coolant temp is 111 degrees, there could be boiling coolant on the hottest parts of the engine, the coolant jacket surface of the housings and irons. I know that a fc needs an under tray or fc guys have issues with higher coolant temps, especially while at freeway speeds when the clutch fan is not working. yeah I thought the temps were pretty irregular. I ordered a new thermostat thinking maybe that was the problem. But I’ll look into ordering a new water temp sensor. |
Originally Posted by cr-rex
(Post 12517602)
Still have the air pump? You sure the cooling system is bled properly? Fans spinning the correct direction?
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Yes temps still seem too high. Are you able to control your efans? Figured there’s a chance you’re using a power fc and can lower their activation temperature.
im using Ford Taurus efans on my fc and if I leave them on constantly, the coolant temps won’t go past 160 Fahrenheit, 70C while idling and even while cruising up to and around 50 mph. On the drift track I run them constantly and I can stay on track much longer than my friends, reaching normal operating temp of 180 F, and I start doing cool down laps at 205F but I still have head room to run hotter if I wanted to. I normally have efans not on full constantly, and can have idling and driving temps right on 180-185F. Install the new thermostat and go from there. |
Just for testing purposes..... remove the thermostat. Leave the gasket in but remove the thermostat and see what the temps do
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Originally Posted by cr-rex
(Post 12519671)
Just for testing purposes..... remove the thermostat. Leave the gasket in but remove the thermostat and see what the temps do
I discovered the issue. I removed the old thermostat and found part of the the seal melted into the thermostat so it wasn’t opening up. I replaced the thermostat and its now running perfect. |
Good to hear. Glad you didn’t ignore it.
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