RX8 overheating...I think.
06-28-2015 | 08:11 AM
#27
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Joined: Jun 2013
Posts: 321
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See what? :/
Found one on one of my own threads. I can't find the rest. Will keep looking
I seen fan motor failure, As for ur previous questions, yes when an electric motor dies, it usually dies slowly, spining slower and slower till one day it completely stops.
on rx8, the fan, even when it's bad will look like it's on high speed, cuz it is on high speed, just not the high speed you want(slower than usual)
Found one on one of my own threads. I can't find the rest. Will keep looking
I seen fan motor failure, As for ur previous questions, yes when an electric motor dies, it usually dies slowly, spining slower and slower till one day it completely stops.
on rx8, the fan, even when it's bad will look like it's on high speed, cuz it is on high speed, just not the high speed you want(slower than usual)
06-29-2015 | 02:52 PM
#30
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Joined: Jun 2013
Posts: 321
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That's brilliant! No, really. That's a great idea! Let's compare our fan RPMs! I don't have a digital tach. I could take my car to the garage and tell them to check it. What is the procedure? Do I have to take the fans out? A little scared to do that because the radiator nipple breaks haha.
06-29-2015 | 04:23 PM
#31
Driving my unreliable rx8
Joined: Oct 2012
Posts: 2,051
Likes: 7
From: Alvarado, Tx
NAh. a little piece of reflective taps stuck on a blade then
Start the car and aim the tach at the tape. You can buy one at harbor freight for 30 bucks or so.
If you have a stock intake it could be challenging, but with aftermarket it's easy to get to the fans for it.
Measuring the amps should produce a equally consistent test result.
Edit
US Drivers side fan 2400, passenger side 2000. Stock fans 142K Miles.
I started the car cold. AC off and the fans were not moving. Turned on the ac then checked the speed. Turned off ac and they stayed the same speed(engine temp 125). Then Went for a drive with the ac on. Today is 104F with 44% humidity. Temp went to 186 Then the thermostat(autozone) opened. Drove it around until it was heat soaked. Then I drove it pretty hard. A few stop to 3rd gear pulls. Some twistie roads. Temps hit 192.8F Then they dropped off quick to 182ish. Drove home. Parked in the driveway and let it idle. The temps climb to about 184, then fall to 177 back and forth. That is sitting in the sun at 4 pm in north texas. Checked fan speeds again and they are about 20RPM faster than before.
Original fans
Autozone thermostat
3KMiles on engine and coolant 66/33-RO water/autozone coolant
CSF Radiator
Custom Under tray fitted to the radiator.
Inter cooler radiator 12"x12"x2" blocking the stock AC condenser.
Start the car and aim the tach at the tape. You can buy one at harbor freight for 30 bucks or so.
If you have a stock intake it could be challenging, but with aftermarket it's easy to get to the fans for it.
Measuring the amps should produce a equally consistent test result.
Edit
US Drivers side fan 2400, passenger side 2000. Stock fans 142K Miles.
I started the car cold. AC off and the fans were not moving. Turned on the ac then checked the speed. Turned off ac and they stayed the same speed(engine temp 125). Then Went for a drive with the ac on. Today is 104F with 44% humidity. Temp went to 186 Then the thermostat(autozone) opened. Drove it around until it was heat soaked. Then I drove it pretty hard. A few stop to 3rd gear pulls. Some twistie roads. Temps hit 192.8F Then they dropped off quick to 182ish. Drove home. Parked in the driveway and let it idle. The temps climb to about 184, then fall to 177 back and forth. That is sitting in the sun at 4 pm in north texas. Checked fan speeds again and they are about 20RPM faster than before.
Original fans
Autozone thermostat
3KMiles on engine and coolant 66/33-RO water/autozone coolant
CSF Radiator
Custom Under tray fitted to the radiator.
Inter cooler radiator 12"x12"x2" blocking the stock AC condenser.
Last edited by logalinipoo; 06-29-2015 at 05:34 PM.
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