Operating tempatures ?
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Operating tempatures ?
"94 LT1, 121K miles. What should the operating tempature be? I just bought the car and I noticed yesterday, sitting at a traffic light that the temp got north of 220 degreees. It settled back to 200 while driving. I've noted comments in this forum in the past about C 4's running hot. Is there a recomended fix? A colder thermostat?
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Your operating temps sound normal for your car. The fan is programmed to come on at 226. The 160 thermo will only dictate the temperature at which the thermostat opens. Only a re-program of the computer to get the fan to turn on at a lower temp will keep the temps lower.
Le Mans Master
Joined: May 2005
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From: Central Maryland
As others have noted, what you're seeing is normal. But, you can change it if you like.
I have the fan-on/off settings on my '94 programmed as follows:
Primary: 190/180
Secondary: 195/185
I also installed a 160*F thermostat, but only so that I could set the fan-on/off temps as above, without having the fans run all the time.
The car runs much cooler now, and I'm far more relaxed about it this way. I'll soon be doing this mod on the LT4 coupe I recently acquired.
Be well,
SJW
I have the fan-on/off settings on my '94 programmed as follows:
Primary: 190/180
Secondary: 195/185
I also installed a 160*F thermostat, but only so that I could set the fan-on/off temps as above, without having the fans run all the time.
The car runs much cooler now, and I'm far more relaxed about it this way. I'll soon be doing this mod on the LT4 coupe I recently acquired.
Be well,
SJW
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Le Mans Master
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Previous to '94, the concept was the same, but the pre-'94 ECMs didn't use flash memory. They instead used EPROMs. On those, you load a revised program into an EPROM, and swap this new EPROM for the existing one (or remove, erase, and re-load the existing EPROM with the revised program, then re-install it in the ECM).
Be well,
SJW
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Joined: Aug 2006
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Follow-up question...
Pulled into the gas station, went to check the oil while the tank was filling (first time I've checked the oil while out driving... haven't had the Vette very long...). Burned my fingers to a frazzle on the dipstick handle... is that normal too? 
Edit: all gauges showed normal operating temps...
Edit: all gauges showed normal operating temps...
Last edited by fuzzydawg; May 17, 2007 at 04:49 PM.
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