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Old Jun 12, 2008 | 08:17 PM
  #1  
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Default Leaks??

I am not new to the forums but seldom post. I enjoy reading and searching for advice and answers.

I picked up my 08' Coupe last Monday with only 2 miles on it. I started noticing a hissing noise after I drive home from work on Monday and today when I got to work. It has been about 80 degrees in the morning and 95 in the evening. The sound is actualy more like drops of water flicked on to a hot iron. I do not see anything leaking on the floor and the coolant level has remained constant. There is no coolant smell either. The car does not ppear to be running hot. I don't see any residue in the engine compartment like I did on my C5 when I did have a coolant leak.

Also, should the cooling fans stay on after the car is turned off? mine don't.
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Old Jun 12, 2008 | 08:24 PM
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possibly moisture from the a/c. draining after you shut her down???
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Old Jun 12, 2008 | 08:25 PM
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I know its hotter in FW then down here in Houston but what you are hearing is water dripping off the a/c condenser and onto the hot engine. Mine does it as well. My fans only stay on after the car is off when I have been driving in 100+ degree street traffic and the car is running above 215 degrees. Even then, they go off quickly. All depends on when they are set to come on, etc. in the cars computer systems.
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Old Jun 12, 2008 | 08:29 PM
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But I don't think I've ever heard my fans staying on after I've shut the car down, then again I've rarely seen temps above 195 either.
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Old Jun 12, 2008 | 08:32 PM
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Originally Posted by slvr 07
possibly moisture from the a/c. draining after you shut her down???
-- -- Good possibility that it is. -- --
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Old Jun 12, 2008 | 08:39 PM
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Originally Posted by dpigguy
I know its hotter in FW then down here in Houston but what you are hearing is water dripping off the a/c condenser and onto the hot engine. Mine does it as well. My fans only stay on after the car is off when I have been driving in 100+ degree street traffic and the car is running above 215 degrees. Even then, they go off quickly. All depends on when they are set to come on, etc. in the cars computer systems.
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Old Jun 12, 2008 | 08:40 PM
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Originally Posted by slvr 07
possibly moisture from the a/c. draining after you shut her down???
It's normal.
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Old Jun 12, 2008 | 08:44 PM
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Originally Posted by dpigguy
I know its hotter in FW then down here in Houston but what you are hearing is water dripping off the a/c condenser and onto the hot engine. Mine does it as well. My fans only stay on after the car is off when I have been driving in 100+ degree street traffic and the car is running above 215 degrees. Even then, they go off quickly. All depends on when they are set to come on, etc. in the cars computer systems.
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Old Jun 12, 2008 | 08:55 PM
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AC condensation dripping onto the exhaust, and the engine cooling fan runs until the temp is reduced to a certain point, a lot of cars do that, don't know why the condensation hose was placed over the exhaust.
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Old Jun 12, 2008 | 08:55 PM
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Default Hissing??

Thanks guys, I'll sleep better tonight and drive happier tommorrow?


Hey! How come the GM vent screens cost over$300.00??
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Old Jun 12, 2008 | 08:59 PM
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Originally Posted by SirDFW
Thanks guys, I'll sleep better tonight and drive happier tommorrow?


Hey! How come the GM vent screens cost over$300.00??
Because they are trying to tell you, "dont buy us, we dont look good"
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Old Jun 12, 2008 | 09:03 PM
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Originally Posted by NYC6
Because they are trying to tell you, "dont buy us, we dont look good"
True. Is that a Navy seal on your avatar?
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Old Jun 12, 2008 | 09:07 PM
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Originally Posted by dpigguy
I know its hotter in FW then down here in Houston but what you are hearing is water dripping off the a/c condenser and onto the hot engine. Mine does it as well. My fans only stay on after the car is off when I have been driving in 100+ degree street traffic and the car is running above 215 degrees. Even then, they go off quickly. All depends on when they are set to come on, etc. in the cars computer systems.
Technically it's the AC evaporator, the condenser is next to the radiator.
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Old Jun 12, 2008 | 09:12 PM
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Originally Posted by SirDFW
True. Is that a Navy seal on your avatar?
No, Just your run of the mill anchor, of a Fleet Sailor.
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Old Jun 12, 2008 | 09:27 PM
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Originally Posted by NYC6
No, Just your run of the mill anchor, of a Fleet Sailor.
22 1/2 Anchors on my collars
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Old Jun 12, 2008 | 09:32 PM
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It's for sure the condensation from they A/C dripping on the manifold. It sounds weird....
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Old Jun 12, 2008 | 09:35 PM
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Originally Posted by SirDFW
Thanks guys, I'll sleep better tonight and drive happier tommorrow?


Hey! How come the GM vent screens cost over$300.00??
Because they are the only ones that will stay on for the life of the car and do not require glue, silicone, tape and all the other goofy attachment methods. Held in place with factory fasteners. I got mine on eBay for $190. They do show up on there from time to time, you just have to keep watching for them. Mine did come from a GM dealer at that price.



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