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

23,845

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 out of 1 people think this is helpful.
Best Answer
90,845

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 out of 2 people think this is helpful.

Your Answer

Add photo

Related Questions

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
515 Great Deals out of 89,462 listings starting at $1,299
Used Toyota Camry
815 Great Deals out of 90,820 listings starting at $850
Used Honda Accord Coupe
136 Great Deals out of 10,343 listings starting at $1,900
Used Nissan Altima
854 Great Deals out of 79,899 listings starting at $1,800
Used Nissan Maxima
285 Great Deals out of 26,458 listings starting at $1,300
Used Toyota Corolla
705 Great Deals out of 73,106 listings starting at $1,950
Used Honda CR-V
806 Great Deals out of 59,900 listings starting at $900
Used Acura TL
231 Great Deals out of 6,930 listings starting at $2,000
Used Hyundai Sonata
597 Great Deals out of 52,232 listings starting at $1,495
Used BMW 3 Series
965 Great Deals out of 33,583 listings starting at $1,000
Used Chevrolet Malibu
850 Great Deals out of 81,350 listings starting at $995
Used Toyota Avalon
207 Great Deals out of 13,745 listings starting at $1,250

Used Cars For Sale

2017 Honda Accord EX For Sale
3,044 listings starting at $21,906
2016 Honda Accord EX For Sale
11 Great Deals out of 265 listings starting at $18,224
2015 Honda Accord EX For Sale
11 Great Deals out of 397 listings starting at $13,999
2014 Honda Accord EX For Sale
38 Great Deals out of 1,093 listings starting at $11,865
2013 Honda Accord EX For Sale
3 Great Deals out of 245 listings starting at $11,587