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1999 Honda Civic LX 1.6 OVERHEATING ISSUE

 
Anonymous Coward
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09/07/2011 12:18 PM
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1999 Honda Civic LX 1.6 OVERHEATING ISSUE
I have a 99 Honda Civic and it is overheating I took the Thermostat out and check the fans and there good and even checked to see if the spark plugs where fouled with water and maybe the head gasket and even felt both hoses to the heater core and they where hot so that is a good sign... but it over heats at any speeds mainly idle speeds and it stays cooler why the heater is on full blast. any idea's it has 191,000
Anonymous Coward
User ID: 1534868
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09/07/2011 12:20 PM
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Re: 1999 Honda Civic LX 1.6 OVERHEATING ISSUE
Radiator might be clogged. (at any speed) or water pump failing.
Anonymous Coward (OP)
User ID: 1539027
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09/07/2011 12:23 PM
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Re: 1999 Honda Civic LX 1.6 OVERHEATING ISSUE
Yes its at any speed and how can you tell if its the water pump??
Anonymous Coward
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09/07/2011 12:23 PM
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Re: 1999 Honda Civic LX 1.6 OVERHEATING ISSUE
seen water pump impellers wear off all the fins and that would do it
Anonymous Coward
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09/07/2011 12:24 PM
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Re: 1999 Honda Civic LX 1.6 OVERHEATING ISSUE
I have a 99 Honda Civic and it is overheating I took the Thermostat out and check the fans and there good and even checked to see if the spark plugs where fouled with water and maybe the head gasket and even felt both hoses to the heater core and they where hot so that is a good sign... but it over heats at any speeds mainly idle speeds and it stays cooler why the heater is on full blast. any idea's it has 191,000
 Quoting: Anonymous Coward 1539027


I have a 98, had a similar issue. Replaced the radiator myself, pretty easy. Probably should check your water pump fuse. Your pump could be bad as well.

You should take it to an autozone and see if it throws any error codes on their computer.
Anonymous Coward
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09/07/2011 12:26 PM
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Re: 1999 Honda Civic LX 1.6 OVERHEATING ISSUE
Squeeze the hoses ...and when you release em ...you should feel the flow. (water pump test)
unahaunter

User ID: 1510022
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09/07/2011 12:26 PM
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Re: 1999 Honda Civic LX 1.6 OVERHEATING ISSUE
It may be your fan switch. [link to honda-tech.com]
Anonymous Coward
User ID: 1534868
Canada
09/07/2011 12:28 PM
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Re: 1999 Honda Civic LX 1.6 OVERHEATING ISSUE
It may be your fan switch. [link to honda-tech.com]
 Quoting: unahaunter


Yes...make sure the fan starts when engine hot.

But that wouldnt overheat at high speeds.
Librarian
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09/07/2011 12:47 PM
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Re: 1999 Honda Civic LX 1.6 OVERHEATING ISSUE
Radiator might be clogged. (at any speed) or water pump failing.
 Quoting: Anonymous Coward 1534868


Yes - do a flow test. Drain system, remove lower hose from radiator and flood with garden hose through radiator fill hole. Should flow fast unless there is core blockage. If flow looks OK then check water pump.
Anonymous Coward
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09/07/2011 12:50 PM
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Re: 1999 Honda Civic LX 1.6 OVERHEATING ISSUE
Wow, we got some pinche mechanics in here huh?
1991 honda
User ID: 1504169
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09/07/2011 12:51 PM
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Re: 1999 Honda Civic LX 1.6 OVERHEATING ISSUE
I had some problem i change radiator but it still over heats even changed the waterpump and its still messed up .. i dont know if i have a defective new radiator but i might have to return it
Anonymous Coward
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09/07/2011 12:54 PM
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Re: 1999 Honda Civic LX 1.6 OVERHEATING ISSUE
thermostat?

I'd change it out just in case, not expensive.
Anonymous Coward
User ID: 578151
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09/07/2011 12:57 PM
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Re: 1999 Honda Civic LX 1.6 OVERHEATING ISSUE
Yes its at any speed and how can you tell if its the water pump??
 Quoting: Anonymous Coward 1539027


There will be play in your fan. Push and pull on the blades to test. PS make sure the motors off.
Anonymous Coward (OP)
User ID: 1539027
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09/07/2011 01:03 PM
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Re: 1999 Honda Civic LX 1.6 OVERHEATING ISSUE
I Checked the hoses already and they are fine when it comes to the pressure and hearing the rad fluid moving and i hooked the rad fan strait to the battery the heater core seems fine and I took the Thermostat out checked all fuses and switched relays and still overheating and thanks to all for the advice
Mindgamez

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09/07/2011 01:06 PM
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Re: 1999 Honda Civic LX 1.6 OVERHEATING ISSUE
This is not the Forum site for this. Go to
www.Honda-tech.com. As for your problem, could be a number of things, The thermostat could not be opening up, is your fan turning on, is your radiator working properly. The reason it runs hotter at idle is while you are moving the air cools the engine. When u blast the heat it takes some of the heat outa the engine bay, its a trick you do when your car is overheating. Go to Honda-tech you will have a lot more help than here. (and it could be your water pump, most fins on the honda's are metal and dont wear off though.

Last Edited by Mindgamez on 09/07/2011 01:08 PM
Anonymous Coward
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09/07/2011 01:24 PM
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Re: 1999 Honda Civic LX 1.6 OVERHEATING ISSUE
throw a code reader on it. it may be your on-board computer is fubar. and check the wiring connection on the thermostat, make sure the contact points are clean and well seated. does your fan come on @ idle rpm? if not, check the fuse and the switch. what kind of water pump is on those civics? is it in the block and cam driven, is it electrical or mounted on the block and belt driven? if it's electrical, check the fuses and the switch. if it's belt driven, make sure the belt tension is right. if it's in the block and you're sure it's a bad pump, make an appointment with a mechanic.
Anonymous Coward
User ID: 1227280
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09/07/2011 01:26 PM
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Re: 1999 Honda Civic LX 1.6 OVERHEATING ISSUE
first, do you have heat coming from the vents?
Anonymous Coward
User ID: 1227280
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09/07/2011 01:30 PM
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Re: 1999 Honda Civic LX 1.6 OVERHEATING ISSUE
nvm didnt read clearly first time, just pressure check it at rad cap and see if it holds, if it doesnt, typically, you will see a leak that is causing a drop in pressure. for every 1lb of pressure exerted on a cooling system=250f hotter your coolant can go w/o boiling, the coolant will be allowed to get hotter than boiling, w/o boiling. So, if you have a leaking gasket/radiator/hose/whatever, it would make sense that it would cause a pressure drop which would then cause it to overheat and lose cooling system pressure. The water pump, though, could be out, since that is where the pressure comes from, and heat.
Home repair guy.
User ID: 6066586
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02/07/2013 05:18 PM
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Re: 1999 Honda Civic LX 1.6 OVERHEATING ISSUE
Check ur radiator cap it to can cause your car to over heat.
Anonymous Coward
User ID: 1546575
United Kingdom
02/07/2013 05:20 PM
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Re: 1999 Honda Civic LX 1.6 OVERHEATING ISSUE
check theres actually water in it. it probably rusted a hole through and all leaked out.

Also check the oil levels.
cowens

User ID: 3516822
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02/07/2013 05:36 PM
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Re: 1999 Honda Civic LX 1.6 OVERHEATING ISSUE
Probably a false flag operation to take away our rights. In fact, I think I've seen your water pump before acting in a MacGuyver episode.
Freelance Geologytard
Anonymous Coward
User ID: 21886424
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02/07/2013 05:47 PM
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Re: 1999 Honda Civic LX 1.6 OVERHEATING ISSUE
Yes its at any speed and how can you tell if its the water pump??
 Quoting: Anonymous Coward 1539027


I had a 98 Civic, water pump went bad, there's a little weep hole that will start leaking, check that. If it is that, might as well change your timing belt too while you're at it.
Useless Cookie Eater

User ID: 29696048
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02/07/2013 05:50 PM

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Re: 1999 Honda Civic LX 1.6 OVERHEATING ISSUE
I Checked the hoses already and they are fine when it comes to the pressure and hearing the rad fluid moving and i hooked the rad fan strait to the battery the heater core seems fine and I took the Thermostat out checked all fuses and switched relays and still overheating and thanks to all for the advice
 Quoting: Anonymous Coward 1539027


Taking out the thermostat doesn't prove anything.
Some cars will overheat without it.
It could just be a bad thermostat.

Replace it with a new one.
Begin there.
Thermostats are cheap.
Anonymous Coward
User ID: 33872423
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02/07/2013 05:52 PM
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Re: 1999 Honda Civic LX 1.6 OVERHEATING ISSUE
Use only Honda Coolant(the fluorescent green).
Anonymous Coward
User ID: 33283062
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02/07/2013 05:53 PM
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Re: 1999 Honda Civic LX 1.6 OVERHEATING ISSUE
I have a 99 Honda Civic and it is overheating I took the Thermostat out and check the fans and there good and even checked to see if the spark plugs where fouled with water and maybe the head gasket and even felt both hoses to the heater core and they where hot so that is a good sign... but it over heats at any speeds mainly idle speeds and it stays cooler why the heater is on full blast. any idea's it has 191,000
 Quoting: Anonymous Coward 1539027


Check your ooil dipstick if it is high with milky stuff llook under it whiile running foor leaks theses things can be difficult ta pinpoint.
SmuRidley

User ID: 591627
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02/07/2013 06:42 PM
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Re: 1999 Honda Civic LX 1.6 OVERHEATING ISSUE
replace the thermostat
The term "derp" was invented by the creators of Southpark.
bill shitters 1.2

User ID: 19820209
United Kingdom
02/07/2013 06:55 PM

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Re: 1999 Honda Civic LX 1.6 OVERHEATING ISSUE
It might not be fitted to your jap mobile
Some cars have some spring type resistors in. The fan feed so as to have a normal spin then when in over heat will spin faster

Check the fan operates at about 85 ish celcius
The retired thread killer


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Anonymous Coward
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02/07/2013 07:15 PM
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Re: 1999 Honda Civic LX 1.6 OVERHEATING ISSUE
how can you tell if its the water pump??
 Quoting: Anonymous Coward 1539027


everything you described in your original post.
Anonymous Coward
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02/07/2013 07:17 PM
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Re: 1999 Honda Civic LX 1.6 OVERHEATING ISSUE

might as well change your timing belt too while you're at it.
 Quoting: Anonymous Coward 1539027


This too.
Useless Cookie Eater

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02/07/2013 07:17 PM

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Re: 1999 Honda Civic LX 1.6 OVERHEATING ISSUE
you need to run it down the road real hard and get it real hot, then remove the rad cap...be sure to put your ear right up to it when your doing it so you can hear if it bubbles.
if it does your water pump is bad.
 Quoting: Anonymous Coward 33687067


Make sure you call 911 ahead of time and have the ambulance close.

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