Honda Car Forum


 

Go Back   Honda Car Forum - Accord Parts Civic Tuning Acura Racing > Discussion > Honda Technical

Reply
 
LinkBack Thread Tools Display Modes
  #1 (permalink)  
Old 09 Oct 2009, 04:01 am
Junior Member
 
Join Date: Oct 2009
Posts: 1
Default My 98 Honda Civic keeps overheating and I have changed the thermostat, radiator and the fan

is good.!!? Please help!
Reply With Quote
  #2 (permalink)  
Old 09 Oct 2009, 04:16 am
Senior Member
 
Join Date: Aug 2007
Posts: 130
Default

Check and make sure the water pump is working correctly.















Did you bleed the cooling system? If not, bleed it.















Other than that, if the cooling system is working there aren't too many things that would cause the car to run hot. A lean running condition can cause the engine to run hotter than normal there's several things that can cause that. If your check engine light is on, get it checked, if its a bad o2 sensor thats probably tour problem right there. You could also have a clogged air filter. Ive seen some engines run a bit cooler after having a new filter installed though only if the old filter was really clogged up good.
Reply With Quote
  #3 (permalink)  
Old 09 Oct 2009, 04:32 am
Junior Member
 
Join Date: Jul 2009
Posts: 2
Default

make sure that the coolant level is good. if it keeps dropping then it would be a leak obviously. check the oil dipstick for bubbles or for the smell of antifreeze. if that checks out, look for leaking behind the motor where the coolant goes through the heater core. if there is bubbles or "water" in the oil then it is an internal leak and is a big problem.































if the coolant level goes unchanged while the car overheats, then the water pump would be you next option to change.































if you changed what you said you did, then these are all thats left at this point.
Reply With Quote
  #4 (permalink)  
Old 09 Oct 2009, 04:46 am
Senior Member
 
Join Date: Aug 2007
Posts: 234
Default

WOW the above guys are really negative! I had a Honda that did the same thing. Look at your fuse box under your hood and make sure that your FAN RELAY is not burnt if it is it will be a 2 dollar fix. Hope its that and it usually is so don't worry.
Reply With Quote
  #5 (permalink)  
Old 09 Oct 2009, 05:01 am
Junior Member
 
Join Date: Dec 2008
Posts: 2
Default

all of these parts were changed and you still have an overheat problem?































Since your willing to spend money without knowing the problem in the first place why don't you try a new radiator cap too.































I bought a brand new radiator and the cap that came with it was bad, It would not hold any pressure. remember pressure on the system raises the boiling point. no pressure.....easy overheat.































If your water pump is not "weeping" then that's not the problem.































Definitely check for air pockets, you can do this with the cap off and the engine running, add water as necessary to eliminate air in the system. be sure to always wear protective "gear" when working on the engine of your car. do not "rev" the engine with the radiator cap removed. instead let the car warm up slowly.































good luck with your problem!
Reply With Quote
  #6 (permalink)  
Old 09 Oct 2009, 05:17 am
Senior Member
 
Join Date: Aug 2009
Posts: 500
Default

Things to consider;















1. water pump fails















2. leaks















3. auxiliary fan malfunctioning















Have this check by a good Honda mechanic. Hope this helps!
Reply With Quote
  #7 (permalink)  
Old 06 Dec 2009, 01:25 am
Junior Member
 
Join Date: Dec 2009
Posts: 1
Default Re: My 98 Honda Civic keeps overheating and I have changed the thermostat, radiator and the fan

Depending on how much you are leaking, this could cause your car to heat up. When you installed did you properly clean the mating surfaces, use the proper gasket, and install the thermostat correctly. So take care in following the given instructions.
_________________
Thermostat
Reply With Quote
  #8 (permalink)  
Old 06 Dec 2009, 02:11 am
Member
 
Join Date: Oct 2009
Posts: 35
Default Re: My 98 Honda Civic keeps overheating and I have changed the thermostat, radiator and the fan

What PATRICK said:

"Other than that, if the cooling system is working there aren't too many things that would cause the car to run hot. A lean running condition can cause the engine to run hotter than normal there's several things that can cause that. If your check engine light is on, get it checked, if its a bad o2 sensor thats probably tour problem right there. You could also have a clogged air filter. Ive seen some engines run a bit cooler after having a new filter installed though only if the old filter was really clogged up good."

is horse malarky.

There are many reasons why an engine can overheat and a clogged air filter certainly isn't one of them, nor a bad O2 sensor, nor a lean mixture.

Possibilities include - clogged rad, defective thermostat, an external or internal leak causing low coolant level, defective rad cap, cracked engine block (causing a leak), broken fan belt (no drive to water pump), defective fan motor, leaking water pump, leaking cylinder head gasket and even improper coolant, like pure water. There are probably a few I have forgotten, but those come to mind quickly.

There is one, and only one reason why an engine will run too COLD and that is a thermostat stuck in the open position.

Hope that helps.
Reply With Quote
  #9 (permalink)  
Old 06 Dec 2009, 07:25 am
Member
 
Join Date: Nov 2009
Posts: 33
Default Re: My 98 Honda Civic keeps overheating and I have changed the thermostat, radiator and the fan

Everyone has some good points. I'll add a few more points

Your coolant lines may have a air lock in it somewhere. Your water impeller may not be circulating the coolant (impeller blade damaged). No way to know unless you take it off and inspect it, but as someone else mentioned if it's leaking replace it. Also a quick check is to reach down there and move the pulley to the pulley wheel on the water pump and if you can feel play it needs replaceing but at that stage it's on it's way out and you'd probably hear a rattling noise from it.

Also to note, on my volkswagon golf my fan wasn't turning on when it got hot because the temerature sensor to tell the fan to turn on in the rad wasn't working. Does your cooling fan turn on when your engine is hot?
Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
1996 honda accord radiator/thermostat question Markusfu Honda Technical 0 29 Oct 2008 04:28 pm
'95 ESI CIVIC HONDA: i'm having overheating problems. only to find out my radiator has too... romz Honda Technical 1 26 Oct 2007 05:42 pm
My car keeps overheating. We've changed the thermostat, coolant and radiator. None cassi_oo Honda Technical 15 26 Aug 2007 03:18 pm
Radiator Fan Not Coming On - Overheating John McConnell Honda 3 31 22 Apr 2004 08:17 am
Radiator coolant and thermostat Samuel Honda 3 14 04 Mar 2004 05:59 pm


All times are GMT -5. The time now is 11:33 pm.


Attribution:
Honda News | Autoblog
Powered by Yahoo Answers




Powered by vBulletin®
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
LinkBacks Enabled by vBSEO 3.6.0 PL2 © 2011, Crawlability, Inc.
HondaCarForum.com is not affiliated with Honda Motor Company in any way. Honda Motor Company does not sponsor, support, or endorse HondaCarForum.com in any way. Copyright/trademark/sales mark infringements are not intended or implied.