hello again , getting ready to change my thermostat in my 1990 corvette c-4, stock L-98, due to overheating problems. someone told me, it would be ok to put in a cooler 160, rather than the 180, might come on quicker, in traffic, etc. is this a good idea? will it effect other things in the car? can anybody help with this? only had the car a week,and have a handful of issues already, this one, need to fix first..... love the car !! any vette people out there? THANKS, KMAC.

35

Asked by Nov 19, 2014 at 02:53 PM about the 1990 Chevrolet Corvette Coupe

Question type: Maintenance & Repair

THIS IS A GREAT FORUM, AND BEEN A BIG HELP ALREADY..... THANKS!!!

9 Answers

8,135

if you r jst changine the thermostat for outside temp reasons it shoud be fine the temp rating for the therm is just the temp of the amtifreeze has to b b4 it opens

65

I have a 1988 L98 that was altered by a previous owner. He put in the 160 degree thermostat and wired the fan so it turns on with the ignition and stays on. I drive a lot in stop and go city traffic in the summer and have never had an overheating problem.

15,965

The engine is made to work best at a set temperature of the engine, and give the best gas mileage, power and emission reduction. This would be at 180 degrees. The 160 T. will work, but your emissions, will go up, the gas ignition will not be at it's best so will lose power, and you will have to consume more fuel to move the car. If you are having overheating problems, check to make sure the fans are working properly. One fan will kick on around 190 or so, and above that both will kick on when the engine gets hotter around 210. Water boils at 212 but due to your system being an enclosed sealed system, it will not boil until much hotter. If you turn on the A/C, both fans will or should turn on. Since your car is new to you, and is 25 years old, check the coolant level, and check for proper color. That may need to be changed out, especially since winter is coming on. Then when the engine is hot, look at the radiator hoses and see if they seem to be larger (expanded ) due to being old and in need of replacement. Old hoses also will collapse and prevent the proper flow of coolant to reach either the engine or radiator. Make sure all the bugs and butterflies are cleared from the radiator and air will flow freely through the radiator. Is there a fan shroud on the radiator to direct the air from the fans pulling it through the radiator? Have the pressure checked to make sure there is sufficient flow of coolant. Just because your over heating, does not mean your thermostat is bad. You can also have a good mechanic use a heat gun to read where the hot spot in the engine is. It also could be a sensor that is bad, giving bad readings to the gauge. Thais also will screw up the information to the computer and give a bad mix of air/fuel to the engine that in the long run will do damage to the motor. Have fun.

1 of 1 people found this helpful.
Best Answer Mark helpful
35

Great ideas, could be a little process, but that's part of the fun, otherwise everyone would be cruising in Vettes, thanks for the help.... great forum, you'll be hearing more from me, Ha!!! Happy Holidays.

10

Kevin My fan runs almost all the time.But stay with the 180.I have problems with mine right now.Its in the driveway on jack stands.Getting ready to change the fuel filter.But I really don't think that's the problem.I am driving fine when its cold and once it gets warm it starts starving for fuel and its like running on 4 cylinders.And when this happens it gets hotter than hell.No water pump problem or thermostat problem .I am thinking maybe a sensor .This all started when I went thru a puddle when it was raining.I'm lost

1 of 1 people found this helpful.
15,965

Some Corvettes have the air pick up near the front air damn. I have seen them go through a street puddle and the nose goes a bit under and water is picked up and brought into the engine. This water will get into the cylinder, and the water turns to steam creating more pressure in the cylinder that it can stand, blowing a hole in the pistons. If I were you, I'd have the cylinders pressure checked. This may be giving strange readings to the computer and it is trying to compensate for maybe internal damage. One guy destroyed and entire engine driving through an intersection that had running water in the street gutters and sucked water into the engine. Also check the oil and make sure there is no water in the oil. It will be a milky color if there is oil and water mixed together. Not wanting to alarm you, just letting you know what could happen. The fighter air planes of WWII had water injection for quick acceleration but they were made for it and the water was measured injected. It was before Nitro injection. A real steam engine in the sky.

110

The 195 thermostats were adopted due to emissions. Colder thermostats simply result in cooler running system.

1 of 1 people found this helpful.
110

Water injection is for detonation control...nothing more.

110

water injection is still used in some applications where turbos are used with high compression. water mixed with denatured alcohol helps cool and prevent detonation. NOX was developed by the us govt for dive bombers to have extra power to pull out of a dive...the nos is injected as a fuel and when burned pure oxygen is the byproduct....which is where all the power is at......

Your Answer

Corvette

Looking for a Used Corvette in your area?

CarGurus has 19,862 nationwide Corvette listings starting at $2,490.

ZIP:

Chevrolet Corvette Experts

  • #1
    John Carson
    Reputation
    2,430
  • #2
    Vincent Parker
    Reputation
    1,710
  • #3
    carGrrl
    Reputation
    1,460
View All

Related Models For Sale

Used Chevrolet Camaro
442 Great Deals out of 30,816 listings starting at $2,495
Used Ford Mustang
612 Great Deals out of 36,332 listings starting at $899
Used Porsche 911
144 Great Deals out of 4,976 listings starting at $10,850
Used Ford F-150
2,578 Great Deals out of 197,071 listings starting at $1,300
Used BMW M3
33 Great Deals out of 2,019 listings starting at $6,995
Used Mercedes-Benz SL-Class
70 Great Deals out of 3,026 listings starting at $4,500
Used BMW 3 Series
1,090 Great Deals out of 33,464 listings starting at $1,000

Used Cars For Sale

2017 Chevrolet Corvette For Sale
6 Great Deals out of 6,879 listings starting at $44,599
2016 Chevrolet Corvette For Sale
16 Great Deals out of 1,192 listings starting at $39,995
2015 Chevrolet Corvette For Sale
9 Great Deals out of 744 listings starting at $39,441
2014 Chevrolet Corvette For Sale
17 Great Deals out of 869 listings starting at $35,191
2013 Chevrolet Corvette For Sale
6 Great Deals out of 345 listings starting at $24,990

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.