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Cooling Systems -- Problems & Solutions (Radiator, Fan, etc)

561 messages,  Last post on Nov 12, 2009 at 1:37 PM

You are in the Maintenance & Repair Forum. Your Host is mr_shiftright

What is this discussion about? Engine


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#497 of 561
Re: Non-Diluted Coolant in vehicle? [Mr_Shiftright] by bolivar
Aug 11, 2008 (9:52 pm)
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Replying to: Mr_Shiftright (Aug 11, 2008 8:06 am)

Some GM auto have what looks like a 'reserve tank' is actually part of the pressurized system. It does not have a flimzy cap, it will have a regular pressure cap.
 
His Audi may have this kind of system. When they took off what they thought was a reserve tank, they actually opened the pressurized system, which would immediately boil, especially if it was overheated.
#498 of 561
'06 Civic antifreeze leaking - why?? by cmruff
Aug 12, 2008 (6:00 pm)
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I had a rather sizeable leak yesterday AM under front end of 2006 Civic 5 speed EX, 37000 miles. My leak was obviously green antifreeze. Added H2O, went to work, topped off last night w/ H2O, another small puddle this AM (maybe 2 cups or so). Have appointment with dealer Thursday, car rental lined up (I commute) and have a water bottle with me!
Ideas??
Oddly, I have in the last couple of weeks noticed a funny smell when I'd turn on the AC. This is not the first time I've used the AC but it IS the first time I'd noticed the smell and meant to have it checked. The antifreeze puddle upped the ante. Could there be a connection? However, this is NOT the normal condensation puddle after using the AC. There's too much of it. Otherwise the car runs great. Anyone out there with antifreeze leak info? The car's been in no accidents and I'm the original owner. Drat - I buy Hondas so things like this don't happen!!!!
#499 of 561
Re: '06 Civic antifreeze leaking - why?? [cmruff] by kiawah
Aug 12, 2008 (6:39 pm)
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Replying to: cmruff (Aug 12, 2008 6:00 pm)

Could be as simple as a hose clamp needs tightened - 2 mins
#500 of 561
Re: '06 Civic antifreeze leaking - why?? [kiawah] by burdawg
Aug 13, 2008 (5:37 am)
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Replying to: kiawah (Aug 12, 2008 6:39 pm)

Yes, I wouldn't call out the dogs yet until I at least found out what the problem was.
#501 of 561
Re: '06 Civic antifreeze leaking - why?? [burdawg] by cmruff
Aug 14, 2008 (5:54 pm)
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Replying to: burdawg (Aug 13, 2008 5:37 am)

The problem turned out to be a CRACKED ENGINE BLOCK. The funny AC smell, of course, was from the leak.
The car is 1000 + a few miles out of warranty (37150 miles)
The dealer told me they had done the same repair a couple of months ago on another 2006 Civic..
Honda is shipping new parts and the repair will be at no cost to me and I didn't even have to ask! I certainly didn't have to plead.
My faith in Honda is completely restored!!
#502 of 561
Re: '06 Civic antifreeze leaking - why?? [cmruff] by kiawah
Aug 14, 2008 (6:24 pm)
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Replying to: cmruff (Aug 14, 2008 5:54 pm)

yikes!
 
Great that they are covering it.
#503 of 561
Re: '06 Civic antifreeze leaking - why?? [cmruff] by imidazol97
Aug 15, 2008 (3:56 am)
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Replying to: cmruff (Aug 14, 2008 5:54 pm)

>CRACKED ENGINE BLOCK.
>on another 2006 Civic..
>My faith in Honda is completely restored!!
 
But cars aren't supposed to have cracked engine blocks. There's a problem. Replacing parts is nice, but it would have been better to engineer and build better to begin with.
#504 of 561
Re: '06 Civic antifreeze leaking - why?? [imidazol97] by cmruff
Aug 15, 2008 (8:31 am)
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Replying to: imidazol97 (Aug 15, 2008 3:56 am)

Yeah, I know newish cars shouldn't have cracked engine blocks. The mechanic suggested it could have been unseen porosity in the casting that didn't break apart at the beginning.
On the other hand, 2006 was the first year of the new model and I remember it being hard to even get a hold of one. I had to wait a month because I wanted a 5 speed. Maybe corners were cut? Also, I NEVER would have bought anything in the first year of a major model change, but my previous Civic had been squashed in 2006: I was stopped and clobbered by a 60 mph Suburban and got out with only a goose egg on my head so of course I wanted another Civic. In fact, that crash pretty much cemented my loyalty to Honda; this repair is the icing on the cake.
Or maybe it just occasionally happens in this NAFTA-esque nightmare of an economy. I've purchased a number of new computers, too - and only one of them had a faulty hard drive, but still, one new computer did have a faulty hard drive. And I've purchased a number of cars; this is my first (I hope only) one with a faulty engine block.
It does make me wonder about that funny under-the-front-dash buzz I used to hear when I'd go 70 - I wonder if there was a connection between the buzz (which had pretty much vanished by 37000 miles) and the crack. When I brought the then-brand new car in to see about the buzz, they couldn't hear it - they said the local hwys didn't let them go 70?!
#505 of 561
fans not turning/engine hot on 1998 plymouth voyager by thutch1
Aug 16, 2008 (1:21 pm)
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i have a 1998 plymouth voyager with a 3.3 ltr v6. i have replaced the fan module, the water pump (at the shop)and the ecm (myself)but it still overheats when i am driving in town with lots of stops, but will stay cool on the highway. i know the fans are not kicking on when it gets hot. i have not changed the thermostat yet. wondered if you could give me any suggestions? thanks!
#506 of 561
Re: fans not turning/engine hot on 1998 plymouth voyager [thutch1] by kiawah
Aug 16, 2008 (1:45 pm)
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Replying to: thutch1 (Aug 16, 2008 1:21 pm)

I had a 96 chrysler t&c, which blew out the cooling fan transistors (they act like a relay)....and the fans never came on, causing it to overheat. They are actually mounted down on the frame, so that they use the frame as a heatsink. (Heatsinks keep transistors from overheating and burning up). I had never seen that arrangement before, and only found it because I had a wiring diagram for the car.
 
I don't know if the 98 is the same, but it might very well be.
 
I guess what I'd suggest is to follow the wiring back from the fans, and see if they connect to something mounted down on the front frame.

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