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Honda Civic Cooling Problems

43 messages,  Last post on May 10, 2013 at 10:50 PM

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What is this discussion about? Honda Civic, Auto Repair, Engine

Messages Page 5 of 5

#36 of 43 Re: Head Gasket Leak [vorlons] by zoooropa

Sep 21, 2011 (9:17 pm)

Replying to: vorlons (Aug 29, 2011 9:32 am)
This thread has some really great ideas well thought out solutions. Let me add a twist.
 
I have a 2000 Honda Civic LX. I have been noticing a signifigant loss of oil between regular oil changes. I recently was told that my radiator had oil in the coolant. It looks like the oil is entering the coolant but the coolant is not entering the oil. I have no smoke from the exhaust. A few weeks ago I attempted, several times, to flush as much of the oil out of the cooling system and refill with a 50/50 solution. The coolant seemed to at least stay cleaner than berfore.
 
Forward to yesterday. I was driving home from work about 45 miles in medium traffic and 95 degrees outside. Thermostat started to increase from what I consider normal in about last 10 miles. I was just shy of hitting the red zone.
 
I waited for the car to cool off and found resevoir empty and refilled radiator with about 1/2 gallon of water (auto store was already closed). This morning I drove 35 miles to work, no problem. On the way home, in 95 degree weather again, the thermostat was about to go into the red zone. I was able to get a gallon of 50/50 coolant and it took a bit more than half the bottle. There is no leak I can see below the engine although the hood area right above the resevoir had condensation.
 
I have seen some posts about a possible manufacturing defect in the block that may be allowing the oil into the cooling system. Anyone have any thoughts on my issue?

#37 of 43 Re: Head Gasket Leak [zoooropa] by vorlons

Sep 26, 2011 (8:25 am)

Replying to: zoooropa (Sep 21, 2011 9:17 pm)
What you have is an early symptom of a blown head gasket. It is exactly what I experienced with my car at the early stage of the problem. You'll see oil residue in your coolant especially in your coolant reserve tank. Your only option is to replace the head gasket before it gets worse and you end up getting the cylinder head warped. If you continue to drive like this, you'll end up filling in more coolant and you'll find that the pressure in the cooling system will build up and you'll see coolant pushing out of the coolant reserve tank when the temp gauge goes up. Fix it now while you can before its too late that you have to replace the entire head unit. You may as well replace your thermostat when you replace the head gasket because the extreme temp from overheating may damaged the rubber parts on the thermostat.
Also.... continuing driving and letting the car overheat will damage your radiator because part of the radiator is made out of plastic, it can only handle so much heat for a limited duration period. To find out if your radiator is damage because of this, take off the radiator cap off when it is safe to do so and look inside the radiator and inspect the inner lip. If you see plastic breaking off from the inside by the white coloring, you'll definitely need a new radiator and a new radiator cap. Good luck....

#38 of 43 weird cooling system issue by bconover

Sep 16, 2012 (7:40 pm)

i have a 2003 civic ex 1.7ltr vtec sohc. the cooling system is building up too much pressure pushing coolant out of radiator into overflow bottle. i pressure tested system which passed with no issues. if i let the car sit and idle its perfect, runs in normal operating temp, awesome heat, fans cycle, no problem. if road tested for 15 minutes or more i start loosing coolant in the way explained prior. t stat replaced and system flushed and burped to remove any air pockets. the only thing i can think of causing this issue is either a bad radiator cap or bad head gasket. im leaning toward rad cap because there is no white smoke from tail pipe indicating im burning coolant and engine oil is crystal clear telling me that the coolant isnt mixing with my oil. i could use an outside perspective on my issue, any help would be greatly appreciated. -THANX-

#39 of 43 Re: weird cooling system issue [bconover] by dslynx

Sep 17, 2012 (4:34 pm)

Replying to: bconover (Sep 16, 2012 7:40 pm)
Well, It's been a year since I posted on this thread. But, to answer you concern about the head gasket and not seeing white smoke, that was the same case for me. No white smoke, no oil in the coolant. What I was able to see is bubbles in the coolant. If you take the radiator cap off, and let the car idle, do you see bubbles?
 
But, since I am here, I will update this thread on my Steal Seal "fix". After using the product and my issues going away, I drove the car for about 6 months, and then parked it for the last 6 months. I have begun driving it again for the past two weeks and have noticed that I am getting the bubbles in the radiator again, but luckily it hasn't been an issue (overheated) yet. But, I can only imagine that it will become an issue as the exhaust leaking into the coolant will build the pressure till it blows the hose off of the overflow.
 
I'm actually disappointed that this seems to be a common issue with our Honda's and can only imagine what has gone wrong with a company that (from my research prior to purchasing it brand new) had an excellent history with the Civic series. I guess they all make lemons from time to time and they have lost my trust. And to think, I laughed at the Hyundai dealer when he suggested I purchase a Hyundai over the Honda. I guess I know who had the last laugh now.

#40 of 43 Re: weird cooling system issue [dslynx] by bconover

Sep 17, 2012 (8:10 pm)

Replying to: dslynx (Sep 17, 2012 4:34 pm)
Finally done, problem finally fixed and fixed properly. This is what I did to resolve the problem. I listened to my gut and flow tested the radiator. Turns out it wasn't flowing at 100% due to some sort of blockage. Replaced radiator, purged system and drove & drove & drove until there was no doubt at all. Tomorrow I'm gonna cut my old radiator open and find out what the hell it is that clogged it up. Im sure it won't be the normal coolant sludge build up so the only thing that'll make me happy is if I found a diamond ring clogging my rad.

#41 of 43 Re: Sounds like it [mrc1217] by ljames01

Jan 06, 2013 (5:52 pm)

Replying to: mrc1217 (Aug 16, 2011 11:49 am)
Hello all I have been seeing alot of these overheating problems,
I have 2 Hondas, 94 and 95 civic coupes 1 ex and 1 dx both had
head gasket probs when i bought them, the dx was blowing coolant
through tailpipe and the ex d16y6 was boiling the coolant tank.
Both engines had the Blue Devil or the Steel Seal treatment,
Please Do not add this crap to your engines if you plan on keeping them!
I just pulled and replaced the DX D15B7 Engine with a good motor I rebuilt
from CraigsList, I have Iphone Photos of the Damage this stop leak causes
to the cooling Jackets of these Engines if you care to see them I might can Post Them. I had to Replace Both Radiators with the all Aluminum Versions,
The D16y6 I reTorqued the Head Bolts in Seq to 55Lbs and it resealed the Gasket and it no longer boils the coolant tank even at Freeway speeds!
But I still have to remove and Backflush the New Radiator every now and then
to keep removing the remants of the Sealer, What a mess this makes of a good Engine!
Just a Tip If You Have a Steel multilayer Head Gasket Try a Retorque,
Caution USE The Factory Sequence Order!! Bolt 1-10!!!!!!
Do not Loosen them just increase the Ft Lbs as I did, I read somewhere on a Civic Forum of Recommended 10 lbs above Factory 47lbs but a felt safer on 55 lbs! Thank the Lord it worked as I had already Purchased a D16Y8 Gasket
for the D16y6, Also the D16Y8 Honda Multi layer Gaskets Works on Both the
D15 and D16 Engines and they are only 29.00 and change at Honda,
The Leakless Gasket from Honda for the D15b7 is 60.00 and they dont want U to Know This LOL! Safe Motoring!

#42 of 43 help a girl out! by sch777

May 10, 2013 (10:28 pm)

Hi.
I have a 1995 Honda civic I recently purchased. When I bought it, I noticed the reservoir tank was cracked and that the cap on the radiator was bad. I got it tuned up, changed the cap, and poxyed the tank. It still over heats. The check engine light is NOT on. When it over heats, the steam comes out of the reservoir tank that holds the coolant and it bubbles. It doesn't overheat everytime I drive the car, which is weird to me. I did notice however, if the Ac is on and I am going 60 mph+ is ususally when it begins to overheat. PLLLLLLLZZZ any suggestions? Where should I start at? What should I be looking for?

#43 of 43 Re: help a girl out! [sch777] by vorlons

May 10, 2013 (10:50 pm)

Replying to: sch777 (May 10, 2013 10:28 pm)
I'm very sure that you have a blown head gasket or a wrap head. I had the same problem. I replaced the water pump, thermostat, radiator and the problem did not go away. Lastly, I removed the head and saw that I had a blown head gasket. I also checked the cylinder head with a straight edge and found out that the head was wrapped so it has to be replaced as well. After replacing the cylinder head and head gasket, the problem went away.

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