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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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#101 of 561
Re: coolant reservoir is empty [masterpaul1] by jmix
Aug 02, 2005 (7:15 pm)
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Replying to: masterpaul1 (Jul 29, 2005 5:25 pm)

Thanks, masterpaul1, for the advice. I will have to look into it.
#102 of 561
Re: chronic overheating jeep [mellieg68] by Mr_Shiftright HOST
Aug 03, 2005 (9:08 am)
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Replying to: mellieg68 (Aug 02, 2005 6:01 pm)

no forget the heater core business...blind alley....forget rings and valves...also a blind alley.....
 
Well, look.... chronic overheating is always a TOUGH problem and it needs step by step diagnosis. I could name 20 reasons for overheating, from the obvious to the truly weird. Sounds like you and mechanic have just been throwing parts at it without more methodical thought on the matter.
 
I'd suggest making sure your cooling fan is going on at the proper time, and if that's okay, a radiator flow test and if that's okay a cylinder leakdown test. Since this is a FAST overheat, it has nothing to do with drips here and there. You can also test your coolant for CO gases (combustion gas in the coolant due to bad head gasket or bad head).
 
If your radiator wasn't removed and dunked, it wasn't cleaned.
#103 of 561
Do aftermarket products... by lemko
Aug 03, 2005 (9:18 am)
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...like Barr's Stop-Leak really work or do they do more harm than good? I was about to take this approach to the problem I had with my Brougham, but got scared. I was afraid it would clog the water passages in the block and plug the radiator. I don't think it would've worked anyway after I found out what the problem was. Anyway, how do these products work?
#104 of 561
Re: Do aftermarket products... [lemko] by Mr_Shiftright HOST
Aug 03, 2005 (9:22 am)
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Replying to: lemko (Aug 03, 2005 9:18 am)

They wouldn't have worked on your problem, which is a MOVING part. Yeah, they work in the sense that they plug a small hole temporarily...but they plug ANY hole, good or bad, is the problem....
#105 of 561
low coolant light by skeeter2
Aug 03, 2005 (6:43 pm)
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my low coolant light stays on but has plenty of coolant? anyone know why?
 
thanks
#106 of 561
Re: low coolant light [skeeter2] by Mr_Shiftright HOST
Aug 03, 2005 (9:38 pm)
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Replying to: skeeter2 (Aug 03, 2005 6:43 pm)

Find out where the sender is (where does it read the coolant?) and see if it's stuck (plunger type) or a grounded sensor.
#107 of 561
'97 LeSabre Smell o' Coolant by ryanfiala81
Aug 03, 2005 (11:50 pm)
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For the past few months, I've noticed an increasingly strong smell of coolant coming from the hood of my '97 LeSabre, and in cold, damp weather an occasional bit of steam coming out of the grille. My reservoir was recently empy; I refilled it a few weeks ago and it's almost all the way down again. There don't appear to be any physical leaks - no puddles - nor do I believe that I am burning any coolant during combustion (as the smell and occasional steam are coming from under the hood. The heater core does not appear to be the issue, as the smell hasn't reached the cabin except on rare occasions. Would replacing the radiator cap be a good (Read: cheap and potentially effective) place to start? It doesn't appear to be of the venting variety. Thanks.
 
Post-Script: I previously had an '85 LeSabre that blew a heater core and later a head gasket, so don't sugarcoat anything - I've been through the worst!
#108 of 561
Re: '97 LeSabre Smell o' Coolant [ryanfiala81] by Mr_Shiftright HOST
Aug 04, 2005 (7:37 am)
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Replying to: ryanfiala81 (Aug 03, 2005 11:50 pm)

radiator cap is an excellent diagnosis...you might also pull out the coolant reservoir bottle (and hose leading to it) and test it for leaks as well. These are two simple things you can do that might solve your problem.
#109 of 561
Re: chronic overheating jeep [Mr_Shiftright] by mellieg68
Aug 04, 2005 (2:26 pm)
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Replying to: Mr_Shiftright (Aug 03, 2005 9:08 am)

OK.. Thank you. I have been trying to find out how to figure out how the cooling fan works. I don't know as much about vehicles as I would like to. I have the serpentine belt that pulls the a/c and everything. Is there a separate fan apart from the one the serpentine belt goes on? I can't find anything about it in the manual. And how can I tell if it is going on other than when it is in park? Thank you for your patience.
#110 of 561
Re: chronic overheating jeep [mellieg68] by Mr_Shiftright HOST
Aug 04, 2005 (3:09 pm)
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Replying to: mellieg68 (Aug 04, 2005 2:26 pm)

I'm not familiar with your vehicle so maybe someone else can answer the fan question---most cars will have a back-up electric cooling fan, which you should be able to see stuck right on the front of your radiator. This should go on when the temperature reaches perhaps 3/4 on your gauge and also should go on when you flip the AC on.

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