What would cause a 1987 Corvette to run hot at a red light?

Asked by May 15, 2012 at 01:31 PM about the 1987 Chevrolet Corvette

Question type: Maintenance & Repair

8 Answers


restricted flow in cooling system stuck thermostat. I know many older vettes ran a bit warm. some people stuck a lower temp thermostat in them to keep them cooler. like a 160 to 180 rather than the 190 to 200


yes and i had an 84 that i took the thermostat out, but the 160 thermostat is good way to go, i currently have a 160 stat in my 99 WS-6, also check the electronic fans make sure they are both turning on, I have mine in my WS-6 to kick on at 180, so you can find some one to change the factor settings. Then basic, radiator flush.


I found a fan control system for 40 dollars on an offroad 4x4 website I will try to find where. I spend about an hour to figure out the wiring and about an hour to install it.


To answer your question, if it runs hot only when idling, you either have a bad fan switch or the fans are not coming on for some other reason. Observe whether or not the fans are on when it gets hot. Then turn the AC on. If the fans run while the AC is on then you most likely have a bad fan switch.

2 people found this helpful.


2 people found this helpful.

I have an 87 corvette that is overheating and the fans wont turn on. I have replaced the fan motor, fan relay, cooling temperator sensor (on the passenger side block by spark plug) a new thermostat, and some wiring. My fans still wont turn on. Im currently flushing the radiator out. I did get the fans to turn on at one point but now its not working. Im loosing my patients BIG TIME! I dont use the AC because the system needs freon (and compressor seal) which I cant afford at this time. But that shouldnt stop the fans from turning on right? WHAT AM I MISSING?? PLEASE email me christina.ghosoph@gmail.com

5 people found this helpful.

I hope its not the thermostat because its such a bitch to remove the inlet.


according 1987 corvette manual temp can reach 250 and that's ok hope that helps.

1 people found this helpful.

Your Answer:


Looking for a Used Corvette in your area?

CarGurus has 15,124 nationwide Corvette listings starting at $4,499.


Chevrolet Corvette Experts

  • #1
    John Carson
  • #2
    Vincent Parker
  • #3
    Tom Demyan
View All

Related Models For Sale

Used Chevrolet Camaro
259 Great Deals out of 27,088 listings starting at $2,900
Used Ford Mustang
296 Great Deals out of 39,978 listings starting at $1,312
Used Porsche 911
68 Great Deals out of 4,580 listings starting at $9,999
Used Dodge Charger
332 Great Deals out of 32,185 listings starting at $2,000
Used BMW M3
15 Great Deals out of 1,493 listings starting at $4,500
Used Ford F-150
2,362 Great Deals out of 199,220 listings starting at $1,300
Used Mercedes-Benz SL-Class
63 Great Deals out of 2,900 listings starting at $4,930
Used Pontiac Firebird
5 Great Deals out of 692 listings starting at $3,995

Used Cars For Sale

2019 Chevrolet Corvette For Sale
3,209 listings starting at $49,356
2018 Chevrolet Corvette For Sale
1,704 listings starting at $48,914
2017 Chevrolet Corvette For Sale
9 Great Deals out of 1,887 listings starting at $41,800
2016 Chevrolet Corvette For Sale
3 Great Deals out of 759 listings starting at $37,888
2015 Chevrolet Corvette For Sale
626 listings starting at $37,336

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.