I have an 87 Corvette. I cannot find the fan switch. I jumped the relay switch and the fan came on. First, at what temp should the fan come on, and second, where is the fan switch

Asked by Oct 23, 2016 at 06:03 PM about the 1987 Chevrolet Corvette Convertible RWD

Question type: Maintenance & Repair

3 Answers

73,845

They usually come on around 210°F. Most likely the fans are controlled by the computer (ECM). Unplug the coolant temperature sensor and start the car. The fans should immediately come on. If not it's either the ECM or a wiring problem. Since the fans will come on when the relay is jumped I doubt it's a wiring problem. If the fans do come on with the coolant temperature sensor unplugged, I'd suspect that the sensor is bad and giving a false reading to the ECM. Some vehicles use 2 sensors. One for the ECM and another for the dash gauge. HTH. -Jim

60

The 87 Vette cooling fan is controlled by a switch in the drivers cylinder head located between the front 2 cylinders. The stock switch turns the fans on at 238*. Kits are available (New Switch) to turn the fans on at much lower temps.

17,065

I put fans on my 69 Corvette when I added over 100 HP to help cool the engine. I live in warm sunny Southern California that is always hot most of the year. So I bypassed the sensor and run the fans all the time when the ignition is on. It still runs hotter than with the stock engine, but it does not overheat in heavy town traffic. You can connect a hand switch to manually turn it off or on, or run it full time, or as suggested above, put on a kit that will turn the fans on at a lower temp. Remember the newer engines are made to run hotter, and at a factory set temp, run best. Too cool, and the fuel will not ignite properly and you have loss of MPG and HP at the same time. Be careful with your decision. I run a 180 thermostat and the car runs about 180 to 190, but on the highway is is under 180.

1 of 1 people found this helpful.

Your Answer

Corvette

Looking for a Used Corvette in your area?

CarGurus has 16,095 nationwide Corvette listings starting at $3,000.

ZIP:

Chevrolet Corvette Experts

  • #1
    John Carson
    Reputation
    2,540
  • #2
    Vincent Parker
    Reputation
    1,800
  • #3
    carGrrl
    Reputation
    1,470
View All

Related Models For Sale

Used Chevrolet Camaro
499 Great Deals out of 30,904 listings starting at $995
Used Ford Mustang
413 Great Deals out of 41,516 listings starting at $1,488
Used Porsche 911
118 Great Deals out of 5,222 listings starting at $12,995
Used Dodge Charger
440 Great Deals out of 34,718 listings starting at $2,000
Used Mercedes-Benz SL-Class
41 Great Deals out of 3,405 listings starting at $4,500
Used Ford F-150
3,159 Great Deals out of 223,305 listings starting at $1,000
Used BMW M3
45 Great Deals out of 1,938 listings starting at $5,999

Used Cars For Sale

2018 Chevrolet Corvette For Sale
7 Great Deals out of 2,626 listings starting at $46,980
2017 Chevrolet Corvette For Sale
14 Great Deals out of 4,011 listings starting at $43,488
2016 Chevrolet Corvette For Sale
15 Great Deals out of 1,102 listings starting at $39,996
2015 Chevrolet Corvette For Sale
5 Great Deals out of 762 listings starting at $35,987
2014 Chevrolet Corvette For Sale
9 Great Deals out of 795 listings starting at $28,900

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.