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95 corvette overheating question

Old 07-11-2019, 07:26 PM
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Default 95 corvette overheating question

I have a 95 Corvette with the 6 speed manual. I am daily driving the car and have been for a year. I have had no mechanical issues with the car so overall I am very pleased. I recently moved and now I take a new route to work which puts me on a highway for an hour with a 70 mph speed limit. Coming home from work at 4 am I will cruise at 73 mph in 6th gear I am turning about 1700 rpm's and I have no issues. But when I am flowing with faster moving traffic on the way to work at 4 pm at 80 mph I am turning about 2100 rpm's in 6th gear. After about 30 minutes at 2100 rpm's I started seeing smoke coming from the engine bay and I noticed my engine temp was pushing the redline. I slowed down to 74 and slowly but surely the engine temp started coming down.

I plan to check the radiator fluid tomorrow but my question tonight is this:

Is that normal for these cars to over-heat when cruising at 2100-2300 rpm's or does it sound like something is wrong? I had a 2007 mustang GT with 4.10 gears and could cruise at 2400 rpm's for hours and it never once over heated.

Last edited by darrensls1; 07-11-2019 at 07:28 PM.
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Old 07-11-2019, 09:22 PM
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Clean the front of the radiator,. between it and the a.c. condenser or is it the evaporator I can never remember. You will be surprised what you find in there.
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Old 07-12-2019, 12:38 AM
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It is not for them to overheat at those speeds/rpms.
Indeed, check for radiator/condenser air flow blockage.
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Old 07-12-2019, 08:04 AM
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Also check to make sure the lower radiator hose is not collapsing. That will cause a reduced movement of coolant and an increase of engine temp.
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