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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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#493 of 561
Re: 2002 jeep cherokee running hot while ideling [dkd810] by burdawg
Jun 17, 2008 (5:59 am)
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Replying to: dkd810 (Jun 17, 2008 5:46 am)

There's a sensor somewhere in the cooling system to turn the fan off and on, probably via a relay to handle the current load. Before doing anything else check to make sure the fan hasn't gone out. If you connect it to 12VDC it should run.
#494 of 561
Re: 2002 jeep cherokee running hot while ideling [dkd810] by 0patience
Jul 07, 2008 (5:06 pm)
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Replying to: dkd810 (Jun 17, 2008 5:46 am)

Probably a problem with the radiator cooling fan relay.
It is located behind the front bumper fascia below the right headlamp.
Some genius thought it was a good idea to put it there.
#495 of 561
Non-Diluted Coolant in vehicle? by kevincent82
Aug 11, 2008 (7:56 am)
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I have an '97 Audi A6 Quattro AWD vehicle. I recently took it on a trip that was about 800 miles round trip. On the way out I had no issues with my vehicle, but on the way home I got stuck in a traffic jam and my car started to overheat. I initially thought that I had a coolant leak because I started to have smoke/steam coming out of my car and it had that sweet smell to it. Upon further inspection I noticed that my resevoir tank was a little low and there was evidence of coolant spray on the inside of my hood. I could not find where the leak was coming from though. I had extra coolant in the trunk of my car. In the meantime someone passing by stopped to help me. He said that he was familiar with cars and took a look. He too couldn't find anything that would suggest a leak. We decided to open the resevoir tank, which was a mistake. As soon as the cap was opened all of the coolant inside the tank boiled over. Long story short, I ended up getting a tow to a gas station where I picked up some coolant. I was in such a hurry that I grabbed the non-diluted and the tow truck driver had put it into the car for me before I realized my mistake. He didn't seem worried by the mistake and said that the car should be just fine, but I should make sure to get a flush before winter. Should I be concerned by placing non-diluted coolant into my vehicle?
#496 of 561
Re: Non-Diluted Coolant in vehicle? [kevincent82] by Mr_Shiftright HOST
Aug 11, 2008 (8:06 am)
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Replying to: kevincent82 (Aug 11, 2008 7:56 am)

Not a problem. Your REAL problem is finding out what happened. You should have the cooling system pressure tested immediately for hose leak, radiator leak and head gasket issues.
 
If your Audi engine should overheat BADLY one day, that's it for your engine, it's toast, and the car is literally totalled. So you've got high stakes riding on finding this problem and fixing it as soon as you are able to do so.
 
Pressure in the reserve tank is not a good sign, so I'm a bit concerned.
#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)
Reply

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.

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