Question about 1994 Honda Civic

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No Heat In My Honda Civic.

There is not heat in my 1994 Honda civic until i have drove it for more than 20 minutes. I replaced the thermostat and it still does the same, and there is coolant in the radiator.

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  • imme33
    imme33 Mar 01, 2009

    Well it a 94 honda civic dx, with 180,000 miles. It has been in an accident with the front end where it became a salvage title, the car was repaired but not to the fullest, the radiator is in working condition and i can hear when the heat kicks on, but it takes a wile for the car to get hot, about 20-30 minutes to get hot, or if i go 60 it will get hot but when i slow down it gets cold, but after i do than it only takes 10 minutes for then heat to maintain its hotnes. It is winter and i freezzzzzzzzz out side......

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I do not know the history of your 94 civic as far as mileage, how well the car has been maintained or not maintained. Could be a block within one of your heater hoses, the valve that open and closes to allow the radiator fluid through your heater core to recirculate the water, or a block within your heater core from rust deposits and or lack of servicing your radiator fluid could cause a build-up of deposits. You might have an air lock within your cooling system" air pockets". Perhaps you can purge your coolant system to allow any air bubbles or pockets that may have entered the cooling system when adding coolant, replacing a radiator, or simply servicing the coolant system. Make sure you have the proper radiator cap to produce the proper amount of pressure with your cooling system. Check for any fluid leaks in your cooling system as well. This may allow air into your cooling sytem.

Posted on Feb 27, 2009

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Heater core maybe going bad

Posted on Feb 25, 2009

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Related Questions:

1 Answer

Overheating when I sit idle.


Over heating the engine is a serious concern. With the hood raised you should hear the motorized fan turn on just behind the radiator as the engine requires additional cooling.. If you look in from the rear of the radiator you should see the fan blades.

This electric powered motor operates on a thermostat and when the engine temperature rises this fan should come on. I'm assuming from your description that when driving and air is flowing through the radiator as the car travels the engine is nor overheating.

Check fan motor thermostat, check fan motor and check wiring.

Wiring Diagrams related to the Honda Civic
http://www.wiringdiagrams21.com/category/automotive/honda-automotive/civic

Motor engine cooling fan only runs as engine temperature requires additional cooling.
26039150-lr2ctbdmqn2bwyjyaqvn1njk-1-0.jpg

Jan 05, 2016 | 2001 Honda Civic

1 Answer

1994 civic always humid inside , also poor defrost


not using the FRESH air vent on,
that is , avoid the RECIRC mode. in the heater.
RECIRC allows humidity to go to 100% (near rain)
or you have water leaks to the cab or both.
if fresh mode fails to happen, that means the heater dampers are stuck
this is covered in the FSM.
seen here.
see HVAC chapters
http://hondatech.info/downloads/Auto/Manuals/Civic/

also check if you get full heat
one reason to not get full heat is the engine thermostat is bad.
180F is normal engine heat, easy to measure; ask.

Jan 12, 2014 | Honda Cars & Trucks

1 Answer

Why does my 94 civic run for 5 mins and then lose power and die


There's no one answer here. Sounds like a component
failure due to heat or being energized for that 5 minutes.
Heard of cam shaft sensor causing such a problem, but
it will require professional help to located the problem.

Jan 28, 2011 | 1994 Honda Civic

2 Answers

The temperature of my 1993 honda civic it''s going up when i am driving it what could the problem be


Typical issue with the 92'-95' Civic. Thermostat is one possibility, yes. Another is that it overheated due to the thermostat or the fact that they have a very small radiator which tends to corrode and become increasingly less efficient, in time causing it to everheat and eventually cracking lengthwise away from the radiator cap along the (plastic) top of the radiator due to steam pressure on the inside of the rad. Inspect the fins on the radiator to ensure they are not turning green and corroding away, this will make a marked difference in your colling capability.

Jul 04, 2010 | 1994 Honda Civic

1 Answer

Have a 2002 Honda Civic HX that when idling the heat stops working and the engine begins to overheat, when revving the engine heat kicks in and temp goes down. Intermittent problem, will go hundreds of...


I would check o2 sensors but to tell you the truth my dad bought a new thermostat that was suppose to open at 160 degrees his temp. got to 220 degrees before but check o2 senors and thermostat

Feb 01, 2010 | 2002 Honda Civic

2 Answers

My 2004 honda civic heat is poor while engine is idle , blower on


Absolutley it could be the thermostat. Is the engine temp ok? Has the gauge changed position?

Jan 06, 2010 | 2004 Honda Civic

2 Answers

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.

Aug 23, 2009 | 1998 Honda Civic

1 Answer

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?

Jan 08, 2009 | 1991 Honda Civic

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