Temp gauge and coolent temps. When does it move?
01-29-2015, 12:25 AM
#1
Driving my unreliable rx8
Thread Starter
Hey guys i just did a little experiment to find out when our temp gauge really starts moving. It is 230f and as a side note above 245 you cant reflash the car. If you have to unplug the coolant temp sensor and it will reflash.
Last edited by logalinipoo; 01-29-2015 at 12:29 AM.
01-29-2015, 03:38 AM
#4
You gonna eat that?
iTrader: (1)
01-29-2015, 11:05 AM
#6
You gonna eat that?
iTrader: (1)
OK, thanks.
01-29-2015, 11:10 AM
#7
SARX Legend
iTrader: (46)
How did you get your car to overheat? IIRC the FSM states that all the way up to 243F is within spec.
Rob @ Pineapple told me that he has built a lot of dune buggies powered by the renny and older 13B's and he said they run in extreme conditions and that typically OEM coolant seals start to deteriorate if you spend any significant time around 220F.
My last engine died of a failed (well it was caught in a oil sample it didn't actually fail) coolant seal after 30,000 miles and I did often get in the 225F range (both oil and coolant) and spend some time there during our runs thru the canyons during the spring and summer. The runs are typically high RPM, low gear, fairly low speeds.
I know people have pegged their gauges and not had issues but I think overall they were just lucky.
Rob @ Pineapple told me that he has built a lot of dune buggies powered by the renny and older 13B's and he said they run in extreme conditions and that typically OEM coolant seals start to deteriorate if you spend any significant time around 220F.
My last engine died of a failed (well it was caught in a oil sample it didn't actually fail) coolant seal after 30,000 miles and I did often get in the 225F range (both oil and coolant) and spend some time there during our runs thru the canyons during the spring and summer. The runs are typically high RPM, low gear, fairly low speeds.
I know people have pegged their gauges and not had issues but I think overall they were just lucky.
I think he drunk.
01-29-2015, 02:15 PM
#18
Driving my unreliable rx8
Thread Starter
Dang man its too early to be drinking.
I told the car no matter what voltage the temp sensor reported it was x tempeture. Then flashed the car. Then took a pic and reflashed it to a higher temp.
200, 225, 250.
The. It would not let me reflash and i got scared and figured it out. So i did
230, 237, and 245
Then i narrowed it down and did some of the finer incriments.
I told the car no matter what voltage the temp sensor reported it was x tempeture. Then flashed the car. Then took a pic and reflashed it to a higher temp.
200, 225, 250.
The. It would not let me reflash and i got scared and figured it out. So i did
230, 237, and 245
Then i narrowed it down and did some of the finer incriments.
01-30-2015, 07:44 PM
#20
rev it up
I got to the last photo at the track a couple of years ago.
The oil temp was just under 230 and I was in the heat of the battle on a hot summers day. I usually keep an eye on the oil temp and back off when it gets to 230.
The only signal I was getting from the car was hesitation as I floored the throttle on the back straight of the track. When I went around the next lap it did the same and it is then I noticed that the water temp gauge had moved I backed off for a lap and it immediately cooled down however, it returned again after a couple of laps of hard driving.
Car has been running fine after that episode.
The oil temp was just under 230 and I was in the heat of the battle on a hot summers day. I usually keep an eye on the oil temp and back off when it gets to 230.
The only signal I was getting from the car was hesitation as I floored the throttle on the back straight of the track. When I went around the next lap it did the same and it is then I noticed that the water temp gauge had moved I backed off for a lap and it immediately cooled down however, it returned again after a couple of laps of hard driving.
Car has been running fine after that episode.
04-11-2015, 03:37 PM
#22
weeeeeeeeee
iTrader: (12)
so a little bit of anality here.
Sensor theoretically goes up to 284F.
To have the gauge jump sooner, rescale .620v through .224v. If you want it to jump like mad, simply set all cells from .620v on to 140. With a little bit of interpolation you could have it rise in a visible linear manner.
Sensor theoretically goes up to 284F.
To have the gauge jump sooner, rescale .620v through .224v. If you want it to jump like mad, simply set all cells from .620v on to 140. With a little bit of interpolation you could have it rise in a visible linear manner.
