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#11 Old 02-02-2013, 07:09 PM
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Given the right temperature and humidity, it can blow steam indefinitely. I was in stop and go traffic for about an hour after skiing a few weeks ago and every single car was putting off a good amount the whole time.

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#12 Old 02-03-2013, 12:52 AM
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Haha, you guys are killing me here.

dyna105, I'll give your bag trick a shot tomorrow morning. After your truck sat for 3 weeks, did it keep dripping water out even after it was warmed up?

I'll keep you guys up to date! Thanks all.

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#13 Old 02-04-2013, 02:40 PM
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Bad radiator cap.

That was the diagnosis from the shop. They said the steam and water were perfectly normal and everything checked out ok. They did a pressure test and chemical test on the coolant system.

Apparently the coolant smell I was getting from the engine compartment was due to a bad seal between the radiator cap and radiator.

Dodged a bullet there! Thanks guys for the help. You all helped keep my sanity in check while waiting for the official word.

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Last edited by ryan_calif; 02-04-2013 at 04:24 PM.
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#14 Old 02-08-2013, 05:22 PM
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Glad to hear you got out on the cheap. It did keep dripping till the exhaust system completely heated up. Which is a while longer than the engine heating up. This was inside the shop the whole time. I think what had you going was the loss of coolant with the smell.Than you found the tailpipe dripping.
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#15 Old 02-08-2013, 07:35 PM
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that water in the exhaust comes not just from the combustion process...but due to the humidity in the air...

typically...the exhaust systems metal will be colder than the ambient air...even at warmer temperatures...the ambient air is combusted...and cooled as it travels down the exhaust pipes. As air cools...it has less ability to hold water in it (as a humid vapor). So the warmer combusted air can travel with water vaporized in the form of humidity...and as it cools, it can't hold as much water in vapor state...so it condenses out of the air and turns to water in the exhaust.

So it depends not just on temperature of the ambient air...but also on the humidity...and also on the temperature of the exhaust system...and also the heat transfer coefficient of how much heat/temperature is lost in the exhaust gas as it travels through the system!

It is the same way you get water droplets on the outside of a glass of ice water...the ice and water doesn't physically travel through the glass...the ice water cools the glass material enough that the air right next to it cools too! The ambient air in the room is warm enough to hold enough vapor in gas form...but the air cools right next to the glass and the vapor water changes phase into water drops on the cold glass!

Another long winded answer by rob!


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#16 Old 02-08-2013, 11:00 PM
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Quote:
Originally Posted by dyna105 View Post
Glad to hear you got out on the cheap. It did keep dripping till the exhaust system completely heated up. Which is a while longer than the engine heating up. This was inside the shop the whole time. I think what had you going was the loss of coolant with the smell.Than you found the tailpipe dripping.
Yeah what got me was that it was still dripping water even after I let it idle and warm up for 20 minutes. What I didn't consider though is the difference between the engine being warm and the exhaust system being warm... I always thought everything was good to go and hot once the temperature needle was in the middle.

Not really the case... the exhaust system kinda lags a bit behind the engine. So it really does take a good 15-20 min drive to get the exhaust system completely hot. After that, no steaming or dripping.

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#17 Old 02-09-2013, 08:15 AM
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Everybody makes that assumption which is why nobody believes experienced techs when they tell them they are harsh drivers. Anything under a 20 minute drive is technically harsh on the vehicle. The coolant does not indicate a warmed up vehicle. It takes a long time for the exhaust and the Oil inside the engine to warm up compared to the coolant. It only takes roughly 7 Minutes for the coolant to reach temperature but it takes like 15 for the oil and about 20 for the full exhaust to warm up. It also depends on temperature obviously.

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#18 Old 03-25-2013, 04:40 PM
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Ryan, you indeed dodged a bullet there... I'm not so fortunate.

My X stopped (or slowed) the dripping of water from the A/C unit. Then the A/C wouldn't work for a while or only when I 'tapped' the compressor with a tire iron.

Last bill is over $2100 and I still don't have it back yet.
Driving a POS rental car.

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