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Older Civic Maintenance and Repair

224 messages,  Last post on Aug 19, 2008 at 6:00 AM

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What is this discussion about? Honda Civic, Coupe, Sedan


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#79 of 224
Intermittant speedometer by idahocivic
Oct 02, 2007 (1:06 pm)
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I have a 1993 Honda Civic. It has over 120,000 miles. It runs great! The speedometer however works intermittantly. Any ideas where to start? I am believe the gage is ok.
 
Thanks,
 
IdahoCivic
#80 of 224
Re: Intermittant speedometer [idahocivic] by terrypm1
Oct 04, 2007 (7:45 am)
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Replying to: idahocivic (Oct 02, 2007 1:06 pm)

Probably a bad instrument cluster. Can buy one from a salvage yard for $50.00 and swap it out. Look here: www.car-part.com
#81 of 224
Re: Intermittant speedometer [terrypm1] by idahocivic
Oct 04, 2007 (5:52 pm)
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Replying to: terrypm1 (Oct 04, 2007 7:45 am)

Is there a speedo cable or is there a sending unit on the transmisson?
#82 of 224
Heater not working /Temp Gauge out of control by greencivic
Oct 06, 2007 (1:08 pm)
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I have a 01 honda civic, last night i was cold and wanted the heat on. it didn't work so i turned it up higher only to notice that the temp gauge was going up fast. Turned the car off and the temp gauge was okay. Turned the heat on and it went up again. Turned the heat off and it didn't go down either. Is this a connected problem or do i have two different issues?
#83 of 224
Re: Heater not working /Temp Gauge out of control [greencivic] by kiawah
Oct 06, 2007 (4:38 pm)
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Replying to: greencivic (Oct 06, 2007 1:08 pm)

The way that they could be related, is two different symptoms of a single problem.
 
If your radiator coolant was very low, you would not get heat (I assume that is what you mean when you say that the heat didn't work), and without coolant the engine would overheat and show as high on your temperature gauge.
#84 of 224
Re: Heater not working /Temp Gauge out of control [kiawah] by greencivic
Oct 06, 2007 (6:10 pm)
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Replying to: kiawah (Oct 06, 2007 4:38 pm)

I checked the coolant level as you stated, the reservoir is at max, and there is coolant in the radiator. are these signs of a possible water pump or thermostat failure?
 
a few more details of the problem:
- heater was turned on, and only ambient temperature air was vented out. shortly after, temp gauge peaked at max temp. I shut of the car for only a couple minutes and it was back to normal after starting it up again. after a few blocks, i turned the heater back on, and the temp gauge went up quickly after turning the heater back on. heater was then turned off, car shut off and restarted; temp gauge went back to normal. it spiked one more time after a few blocks and went back to normal and remained that way for the rest of the trip home. car hasn't been started since.
#85 of 224
Re: Heater not working /Temp Gauge out of control [greencivic] by kiawah
Oct 06, 2007 (6:19 pm)
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Replying to: greencivic (Oct 06, 2007 6:10 pm)

When a water pump is going bad, you normally would be hearing it squealing and/or see it leaking.
 
Has any work been done on it recently, are you leaving out any other bits of information about this car? Have you had any work done on it in the last couple of months?
 
What you can do when the engine is cold, is take off the radiator cap and then start the vehicle and let it idle. Watch the temperature gauge, as well as watch for movement of water in the radiator when the thermostat opens as the engine starts to warm. If the engine overheats without the water starting to flow, suspect thermostat or waterpump.
#86 of 224
Re: Heater not working /Temp Gauge out of control [kiawah] by greencivic
Oct 06, 2007 (6:28 pm)
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Replying to: kiawah (Oct 06, 2007 6:19 pm)

no work done recently other than oil change 2000 miles ago. there are no squealing noises or leaking to my knowledge. i am going to start the engine and give it a test. thanks for the quick reply.
#87 of 224
Re: Heater not working /Temp Gauge out of control [kiawah] by greencivic
Oct 06, 2007 (6:58 pm)
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Replying to: kiawah (Oct 06, 2007 6:19 pm)

did the test, the coolant circulated. i could see the coolant in the radiator until the heat was turned on then it dropped(this could just be a coincidence..i am not sure). The heat was working great now. checked the oil and it was a healthy brown color. the temp gauge was normal. 5 minutes total run time. the question now is should the coolant level be visible at all times in the radiator or is it normal that it dropped? could this just be a fluke? should we let the engine idle longer than five minutes for the test? anything else we should check? thanks
#88 of 224
Re: Heater not working /Temp Gauge out of control [greencivic] by kiawah
Oct 06, 2007 (7:52 pm)
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Replying to: greencivic (Oct 06, 2007 6:58 pm)

Yes, there should be coolant filled in the radiator at all times. What actually happens is when it gets hot it expands, and blows the extra fluid out into the recycling tank. When the engine is turned off, the water reduces in volume, and it sucks the overfill back in from the recyling tank.
 
I was asking whether you had any work done, as sometimes vehicles can get air locked if the radiator was drained and refilled (the air keeps the water from circulating). If you haven't had any work, then this could not have been a problem.
 
However, I would be watching this closely until you figure out exactly what is going on. You might have a problem with a head gasket, with the cylinder compressing and blowing air/exhaust mixture into the coolant (thereby creating an airlock).
 
You might want to consider doing a pressure test on each of the cylinders, just to be safe.

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