why do replacement thermostats come in two temperatures (170 and 180 degrees)?

Asked by Mar 18, 2015 at 03:58 PM about the 1992 Honda Accord DX

Question type: Maintenance & Repair

4 Answers

Climate. If you live in a place that gets very hot and never gets cold, South Arizona for example you want the thermostat to open and begin coolant flow sooner than if you live in the NE and need a little more time and to keep your engine warm, from running to cool. Running too cool is hard on an engine. They have a wider range than that also, 165 to 190. New(er) cars should use strictly what the manufacturer specifies. Also, once the car is at operating temp it has NO difference in cooling capability

1 out of 1 people think this is helpful.

I got curious and thought to myself, self, you don't know that much about the 'big picture' about thermostats and opening temperatures ranges. So I researched. The thermostat sets a minimum, not a maximum temperature of your car's operating temp. You don't want too cool, I knew I was right about an engine running too cool being stressful. So a lower range will open sooner, and cause a longer warm-up time. A car needs to run hotter than 160°F. So if it's 40° below 0, the thermostat will keep your engine hot enough by partially closing. Sometimes you might see big-rigs with a canvas cover, with a zipper. But even with a 160°, the engine will still warm up past that and be fine. It sets no maximum. But needs to open before optimal running temp, if the car is designed to run at, say, 200°, and the 'stat doesn't open until 200°, it might get too hot before coolant has a chance to circulate. NO thermostat is strictly not good, either the coolant does not have time to dissipate heat because it's flowing to fast = overheating, OR the same too-fast, or more volume can keep an engine from warming up. Usually the former. Bottom line: use what manufacturer specifies

1 out of 1 people think this is helpful.
3,185

Personally I would usually get the higher temp myself for warm up purposes.

1 out of 1 people think this is helpful.

I agree JP. Since it has nothing to do with max.

1 out of 1 people think this is helpful.

Your Answer

Add photo

Related Questions

  • 2004 honda accord 4cyl EX does not want to start in temps lower than 30 degrees 1 answer

    Car is sluggish to turn over and start at temps between 20-30 degrees, very slow to start at temps between 0-20 degrees, will not start most of time if temps are below 0 degrees. Radiator is set for ...

    2004 Honda Accord EX

    -

    Maintenance & Repair

  • how do you replace the headlight bulbs? 81 answers

    what do I have to do to get the bulb out, like remove the finder? Or is there an easier way?

    2004 Honda Accord

    -

    Maintenance & Repair

  • why would a 2000 Honda Accord crank but not start sometimes? 4 answers

    Hi everyone, I’m hoping to get some help with a 2000 Honda Accord V6 EX Coupe I change the oil regularly in this car and I replaced the battery in August 2014. I’d never had a problem with this car...

    2000 Honda Accord EX V6 Coupe

    -

    Maintenance & Repair

  • Do I need a new temperature sensor? 2 answers

    I have a 95 Honda Accord and while driving my car will just stop running. None of my gauges will go out, I have a full tank, my check engine light just comes on and after a few minutes I can start i...

    1995 Honda Accord DX

    -

    Maintenance & Repair

  • Why do all my windows roll down automatically when parked? 84 answers

    After parking and locking our 04 Accord we have several times returned to find all four windows down about two inches. is there something or feature about this car that I don't know about.

    2004 Honda Accord EX V6

    -

    General

Accord

Looking for a Used Accord in your area?

CarGurus has 88,193 nationwide Accord listings starting at $1,150.

ZIP:

Search Honda Accord Questions

Honda Accord Experts

#1 Tom Demyan
Tom Demyan
Reputation 2,020
#2 JP1956
JP1956
Reputation 1,480
#3 Jonathan Ford
Jonathan Ford
Reputation 1,470
View All

Related Models For Sale

Used Honda Civic
516 Great Deals out of 89,847 listings starting at $1,299
Used Toyota Camry
850 Great Deals out of 90,973 listings starting at $249
Used Honda Accord Coupe
139 Great Deals out of 10,398 listings starting at $1,900
Used Nissan Altima
877 Great Deals out of 80,282 listings starting at $1,800
Used Nissan Maxima
290 Great Deals out of 26,473 listings starting at $1,300
Used Toyota Corolla
716 Great Deals out of 73,207 listings starting at $1,950
Used Hyundai Sonata
603 Great Deals out of 52,339 listings starting at $1,495
Used BMW 3 Series
969 Great Deals out of 33,695 listings starting at $1,000

Used Cars For Sale

2017 Honda Accord For Sale
28 Great Deals out of 57,448 listings starting at $18,973
2016 Honda Accord For Sale
66 Great Deals out of 3,235 listings starting at $14,994
2015 Honda Accord For Sale
93 Great Deals out of 3,306 listings starting at $12,595
2014 Honda Accord For Sale
252 Great Deals out of 8,146 listings starting at $6,890
2013 Honda Accord For Sale
45 Great Deals out of 2,130 listings starting at $7,980