Why is my car overheating after I replaced the radiator?

Asked by Aug 12, 2016 at 02:14 PM about the 1999 Honda Accord EX

Question type: Maintenance & Repair

My radiator had a leak and I only have one car so I had to use it anyway.  
During that period of time I used the car and had to add water to the
radiator every time I stopped just to keep it from getting too hot.  There were
times that the car ran hot and now it is overheating even though there is no
leak and I filled the radiator with antifreeze.  I think I may have damaged
something else on the car running it hot.  Please help.

2 Answers

25,165

Did you also replace the thermostat? Check the condition of the hoses? Flush the coolant? Water is corrosive, antifreeze contains detergents and rust inhibitors as well, so running with just water can be bad for an engine if done for a long period of time. There may be a blockage or something impeding coolant flow in the engine, a flush would help with that. Other problems you may want to look into are the condition of the water pump and coolant sensors and operation of the cooling fans. Lastly, when refilling coolant you have to bleed all the air from the system, this can take one or more tries to get all the air out.

1 of 1 people found this helpful.
Best Answer
96,955

Check the cooling fan operation, sometimes when an engine overheats it can damage the fan thermoswitch, also Hondas are very forgiving when it comes to overheating, they usually either blow a headgasket or crack a cylinder head, a simple block test can tell the tale.

2 of 2 people found this helpful.

Your Answer

Add photo

Related Questions

Search Honda Accord Questions

Honda Accord Experts

#1 Tom Demyan
Tom Demyan
Reputation 2,140
#2 JP1956
JP1956
Reputation 1,620
#3 Jonathan Ford
Jonathan Ford
Reputation 1,550
View All

Related Models For Sale

Used Honda Civic
850 Great Deals out of 84,348 listings starting at $750
Used Toyota Camry
1,203 Great Deals out of 83,783 listings starting at $750
Used Honda Accord Coupe
171 Great Deals out of 10,308 listings starting at $1,495
Used Nissan Altima
1,263 Great Deals out of 75,204 listings starting at $1,695
Used Nissan Maxima
336 Great Deals out of 24,259 listings starting at $1,999
Used Toyota Corolla
971 Great Deals out of 69,388 listings starting at $1,800
Used Honda CR-V
968 Great Deals out of 56,812 listings starting at $1,000
Used Acura TL
183 Great Deals out of 5,417 listings starting at $1,999
Used Hyundai Sonata
841 Great Deals out of 47,695 listings starting at $1,195
Used BMW 3 Series
1,015 Great Deals out of 31,436 listings starting at $1,000
Used Chevrolet Malibu
1,158 Great Deals out of 79,585 listings starting at $2,500
Used Toyota Avalon
242 Great Deals out of 14,413 listings starting at $1,149

Used Cars For Sale

2017 Honda Accord EX For Sale
1,581 listings starting at $21,494
2016 Honda Accord EX For Sale
5 Great Deals out of 216 listings starting at $17,990
2015 Honda Accord EX For Sale
21 Great Deals out of 408 listings starting at $14,491
2014 Honda Accord EX For Sale
56 Great Deals out of 1,016 listings starting at $11,900
2013 Honda Accord EX For Sale
10 Great Deals out of 215 listings starting at $10,693

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.