1994 Honda Accord overheating

LUMBREA

MEMBER
1994 HONDA ACCORD

Engine Cooling problem
1994 Honda Accord 4 cyl Front Wheel Drive Manual

i JUST CHANGED THE TEMPERATURE SNESOR THAT RUNS THE GUAGE ON MY DASH. SINCE, MY CAR RUNS TOO HOT AT SPEEDS OVER FORTY MPH AND WILL DO THE SAME WHEN SITTING IDLE. I HAVE CHANGED THE THERMOSTAT, THE MAIN COOLING FAN, THE COOLING FAN TEMPERATURE SENSOR SWITCH (BETWEEN THE ENGINE AND RADIATOR ON THE TOP HOSE, SHOULD I CHANGE THE OTHER, ON THE THERMOSTAT HOUSING?). I TRIED TO BLEED THE SYSTEM, BUT NOT SURE IF I HAVE DONE IT PROPERLY. ANY HELP WOULD BE GREATLY APPRECIATED.

3 Replies

KHLOW2008

MECHANIC
41,815 POSTS

Hi lumbrea,

When engine is cold, remove the radiator cap and check the coolant level. If it is low, you have not bled the system correctly or there is a leak somewhere.

To bleed the system, top up the coolant and run the engine with the radiator cap off and heater turned on to Max. Top up the coolant when level drops. Continue to top up till it stabilises and close radiator cap.

Are the radiator fans working?

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Tuesday, May 4th, 2010 AT 1:27 PM

LUMBREA

MEMBER
2 POSTS

My main fan was not working. I replaced it, and that did not solve my problem. I bought an infrared temp gauge and tested different areas of the engine, coolant hoses and housings, and the highest reading I got was 200 degrees. I am going to just conclude that my gauge is just bad. Rather than change it, and since the car has 275k miles, I can live with the fact that the gauge does not work. I am just glad that I know I am not overheaing

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Tuesday, May 4th, 2010 AT 5:02 PM

HONDAMIKE

MECHANIC
71 POSTS

To bleed the system, there is a bleeder screw on the housing near the thermostat. When the engine is cold, you open the radiator cap and the bleed screw (12mm) about 3/4 to 1 turn. As you fill the radiator with coolant, this allows you to also fill the engine block since the thermostat is closed. You should get bubbles coming out of the bleeder as you fill it. When the coolant level is up, it will stream out of the bleeder - close it. Top off radiator and fill resevoir.

Fans - if you turn on your A/C, both fans should come on. If only one fan comes on, check fuses and connections before replacing coolant temp sensor.

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Tuesday, May 4th, 2010 AT 11:07 PM