The hose to the coolant res was disconnected. Reconnected it and filled sys. Still overheated, took the radiator cap off and the spring and seat was missing. Radiator neck was malformed so replaced the radiator too. Blead sys and still overheating. Replaced thermostat. Filled system and blead system for 35-40 min with cap off radiator and adding coolant as needed. No apparent leak from the water pump. While bleading system turned on the ac and both fans ran and then stopped when turned off 3 times. Had the heater running full on and getting heat. All seamed fine test drive had overheat light come on after 30 min at highway speed. Oil was changed at the same time as thermostat. No steam or moisture at tail pipe.
Hope this helps, do this VERY Careful, when over heating Turn ON the heater to full, does it cool down? does the water in the Radiator Boiling?. = water pump, (don't always make noise).
Not boiling?- Check and R&R Heat sending Unit Gage on the Radiator or somewhere on the engine maybe close to the Thermostat..
On this model all it has is the dash light, no temp gauge Ya Honda! save a buck in manufacturing and make money on repairs! After running the car there is a lot of pressure in the radiator and no signs of leaks form any hoses. No leaks around the water pump area or coming from the radiator cap. Does it have the hole to leak if bearing goes like other makes? Have not pulled the coolant res and check it for leaks. Thanks for your help.
All cars (I believe have a temperature gauge sensor to send the water temperature to the bulb to lite up the light or temperature gauge to move up or down). maybe you need to reset the computer signals notifications. do you see the water flowing inside the radiator?, no?, maybe something blocking water flow.. good luck.
Thanks Luis! I'll check it out. It is my sons girlfriend's car so It may take a day or 2 before I have a chance. Looks like it's flowing. Going to check temps with laser temp sensor to see what is hot or not to make sure it's flowing.
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SOURCE: 2002 civic ex overheating
with your description it sounds like your fans are not coming on, also sounds like the problem was never solved, sounds like you threw a lot of money at your problem also... check to see if the fans are coming on at the right times, seems like a n air movement over the radiator since you say it only gets hot in stop and go traffic... well when your driving at a constant highway speed guess what you have air movement through the radiator... check also a clogged ac condensor with bugs, pressure wash it out so the air can pass through it easily... please rate my help thanks
SOURCE: 95 honda civic lx overheating
COULD BE COOLANT SENSOR,HEAD GASKET,CHECK THE TIMING,THE PROPER MIXTURE OF COOLANT,WATER PUMP.DID YOU HAVE IT CHECKED OUT?ANY LEAKS?HEAT WORK WITH FAN?
just installed a new water pump and thermostat my 97 trans am keeps overheating,anyone know why?
SOURCE: 1994 Honda Civic LX\overheating within 2 mile drive
Remove and raise upper hose at thermostat end and remove lower rad hose.
Fill rad with a hose and watch for flow from bottom rad hose and/ or bottom rad hose connecton.......water should fall though rad easily.
Honda rads are cheap.....any restriction....replace rad.
Remove thermostat....fill thermostat housing with hose and watch for water flow at bottom rad hose.
Flush good.
Remove heater hoses.......flush back and forth until a good flow is present "With heater control set to hot" if no or poor flow....replace heater core.
Stop leak can plug everything.
Also.......not likely causing over heating....but ....at your mileage,if you do not know if the timing belt has been changed.....CHANGE IT NOW!
Water pump is optional at this mileage.
Testimonial: "thank you for the very clear, step by step instructions for diagnose and remedy"
SOURCE: My Granddaughter has a 2003 Honda Civic which has
Hi, its not good news im afraid by you describing that with the coolant cap off and revving the car causes the pressure to build up and push the water back out it sounds to me like the head gasket is on its way out, what you need to do is take it to a garage and dont have a compression test done you need to have a gasses test done, you can buy these yourself if you want to and what it does is this.
its a plastic tube with blue liquid inside it then you take the coolant cap off and place this in its place you then run the engine and rev it up then you squeeze the rubber at the end of the tube and it then sucks the air out of the coolant and through this liquid then if it detects gasses from the engine in the coolant then this turns the liquid green and this is then telling you that the head gasket needs changing.
please dont let it keep over heating as this will cause the cylinder head to warp and you would then need to get it skimmed to make sure its not warped, get the gasses test done as a compression test dont give you a true reading as the engine is not running when they do a compression test.
let me know how you get on or if you need further assistance ok
plz rate this solution as i have a whole page of unrated posts, thanks
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Added info Timing belt OK no squeal while engine running and it runs smooth no knocks or rattling. No apparent leaks from any of the hoses.
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