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

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

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What is this discussion about? Engine

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#61 of 561 Re: Air Cond. can't make uip its mind, Hot or Cold! [dar2] by masterpaul1 Jul 12, 2005 (2:22 pm)
Replying to: dar2 (Jul 10, 2005 11:13 am) Help me understand. While you are cruising at 55 mph with out any stop and go, you have the air conditioner set at 45 degrees and the temperature gauge will read just at the normal range line above the C line. When your driving below 55 mph in stop and go traffic, stop lights, the air conditioning is set at 60 degrees and warmer and the temperature gauge will start to rise in the normal/high range towards the red zone H. At night the air conditioning will be set at 40 degrees with no over heat.   Did you have the air conditioning on for each time that you described? I'm at a loss, since I know for a fact that the vehicle coolant get's a lot hotter then 60 degrees. So I am assuming you are talking about the air conditioning temperature setting.
#62 of 561 Re: Faucet-like coolant leak [avrabel] by Mr_Shiftright HOST Jul 13, 2005 (7:49 am)
Replying to: avrabel (Jul 12, 2005 8:57 am) Coolant should go into the coolant recovery tank...it shouldn't leak out of the radiator cap at all....if it does, sure replace the cap but that probably isn't the answer.   You should check (on that car in particular) for a bad head gasket and also have the radiator flow-tested to see if it's all clogged up after all these years and all those miles.
#63 of 561 2000 GMC Sonoma Compressor Problem by leo88sld Jul 17, 2005 (2:14 pm)
Hello, I have a 2000 GMC Sonoma with the 4 cylinder engine flex fuel option. The problem that I am having is the following; If I put the ac switch on any of these selections; max a/c, a/c, symbol that shows air being directed to top and bottom of dash, I will hear a noise that sounds like someone shaking a can of bb's. If I put the same swithch in any other position besides off, I still here the noise(bb's being shaken in a can), but not a intense. This truck has 105,00 miles on it, and everything is all original equipment. My personal feeling is that its the bearing within the compressor. If I disconnect the wire going to the compressor/clutch assm, I can still hear the noise, but only a little. In all cases the noise is more prevalent at low rpm/idle than at any other rpm.   How can I be sure it is the bearing in the compressor? If it is the bearing in the compressor, could I fix it myself, or should I purchase a remanufactured/new compressor? New/remanufactured compressors go for $350.00 and up for this truck, so I want to try and do as much of the work myself.   Also, I have been having to add coolent to the overfill tank. The ac still blows cool air, but I think its just a matter of time before that bearing(if thats what it is) goes up.   In any event, all recommendations/ideas for troubleshooting this problem would certainly be appreciated.   Thanks, Robert. Salisbury, Md. Replies to this message: Mr_Shiftright (Jul 17, 2005 4:43 pm)
#64 of 561 Re: 2000 GMC Sonoma Compressor Problem [leo88sld] by Mr_Shiftright HOST Jul 17, 2005 (4:43 pm)
Replying to: leo88sld (Jul 17, 2005 2:14 pm) How much coolant do you have to add to the tank? Every day or ??   That noise you hear sounds more like a bad AC compressor clutch. We could talk more about that in the Climate Control Forum. This forum is for cooling systems, as in "engine cooling" not car interior cooling.   thanks   Host
#65 of 561 Question on my Nissan Pathfinder 2002 by jxu158 Jul 18, 2005 (7:18 pm)
Recently, I notice that after I drive hime from work and parked for a while, there is some water under the car on the passenger side.   That "water" seems to be not the coolent, because the color is not kind of light green (the coolent color); when I touch it, it does not feel like some oil based. Basically, it seems like just be water... And my coolent reservor is on the driver side. In addition, seems, just seems to me there is no coolent leak from the radiator or coolent reservor, because coolent reservor is at its max level.   So I wonder whether it is a problem? Because the warranty period will expire in about 2 months, I don't want to wait until next oil change to get it checked.   I appreciate any help here. Replies to this message: alcan (Jul 19, 2005 12:26 am) Mr_Shiftright (Jul 19, 2005 8:07 am)
#66 of 561 Re: Question on my Nissan Pathfinder 2002 [jxu158] by alcan Jul 19, 2005 (12:26 am)
Replying to: jxu158 (Jul 18, 2005 7:18 pm) It's probably condensate from the air conditioning system.
#67 of 561 Re: Question on my Nissan Pathfinder 2002 [jxu158] by Mr_Shiftright HOST Jul 19, 2005 (8:07 am)
Replying to: jxu158 (Jul 18, 2005 7:18 pm) I agree with that, too.
#68 of 561 Think my cooling system might be causing a passenger floor leak by sally3 Jul 21, 2005 (8:38 am)
I've had a leak there for some time. I can't trouble shoot it for the life of me because (I'm in Oregon) so it does rain alot, but it doesn't consistently leak when it rains. On the other hand it POURS water from the corner under the dash near the firewall when I run the AC. BUT I run the AC all the time throughout the year and it only seems to do this in the summer. I'm really not sure why this is happening and have had it looked at before. There is no consistency to the issue and so it's very hard to make a determination about why or when. Please help me. I've read thru all the water leak posts and don't see anything similar. I do not believe it is an exterior seal or door leak at all. I can actually watch it either drip or pour from the area in question. Replies to this message: Mr_Shiftright (Jul 21, 2005 3:36 pm)
#69 of 561 Re: Think my cooling system might be causing a passenger floor leak [sally3] by Mr_Shiftright HOST Jul 21, 2005 (3:36 pm)
Replying to: sally3 (Jul 21, 2005 8:38 am) You should remove the windshield cowling (under the wipers) and inspect for clogged drain holes (easy, just pour water down there and see if it goes onto the ground through a drain, or into your car)---also check the little drain tube that is supposed to drain off the condensation from your AC evaporator---on some cars it is buried so that might take some doing.
#70 of 561 red clay like stuff in radiator by angieatky Jul 23, 2005 (6:59 am)
I have had my car about 4 months and now there is a marroon colored stuff coming out the radiator I check it everyday and it is always a little low and has this stuff. It is thick too. It smears like paint when I touch it. I was just wondereing if it was stop leak and if I flush it out I'm gonna have a hole somewhere. I think it keeps me from filling it all the way up. And thats why its low everyday. Replies to this message: Mr_Shiftright (Jul 23, 2005 9:05 am)

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