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Old 01-18-2013, 10:00 PM   #1
mila_pops
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Member#: 344048
Join Date: Jan 2013
Chapter/Region: RMIC
Location: SLC, UT
Vehicle:
2004 Impreza WRX
Blue

Default Smoke coming from hood but car not overheating

Hi,

While I was driving home tonight in my 2004 WRX, I started slightly smelling coolant through the heater vents and also started seeing some white smoke coming from the hood. I was able to make it home, but it was smoking quite a bit by then so I opened the hood and found a small crack in the top radiator hose. A little bit of coolant was bubbling out too, but the car never showed any signs of overheating during the whole drive. Is this normal? The temp. gauge actually stayed perfectly in the middle, even after I drove up a few small hills. Another symptom was the heater blowing cold air, and my CEL is on from a P0442 code (not from the gas cap as that was replaced with a brand new one which didn't fix the CEL). It sounds like I just need to get my radiator hose and/or radiator replaced, but this car has over 100K miles on it so could any of this be signs of a blown head gasket as well? Or will repairing my radiator resolve these issues? Could it mean that my temp. gauge might also be having issues since it never read that my car was overheating, or was it a good sign that at least my car never overheated even with a leak in the radiator hose?

Thanks for your help, and sorry for the ignorance.
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Last edited by mila_pops; 01-18-2013 at 10:09 PM.
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Old 01-18-2013, 10:09 PM   #2
Zefy
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Member#: 105104
Join Date: Jan 2006
Chapter/Region: VIC
Location: Coquitlam, BC, Canada
Vehicle:
1979 BRAT / 01 RSTI
99 2.5TS (DEAD) / 87 GL

Default

the temp gauges in the dash are typically not really a gauge... more of a slow moving switch indicator. The coolant temp is constantly changing depending on load, A/C, speed, all that good stuff but the needle stays perfectly still when it's warm. It pretty much just has 3 spots it can sit at. Cold, warm, and hot...

Once it actually overheats, the gauge will spike up and now you've got a big problem. If that never happened, then you should consider yourself really lucky. Go get all your parts to fit the leaks and hope for the best.
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Old 01-19-2013, 12:17 AM   #3
HinshawWRX
Medium Frank
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Member#: 140114
Join Date: Feb 2007
Chapter/Region: MAIC
Location: Common Sense, VA
Vehicle:
2014 Porsche
GT3 (Currently on Fire)

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Fill out your profile.

Is coolant coming out of a hose normal? No, not at all. Start small and replace the hose, inspect the radiator, and go from there.
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Old 01-19-2013, 12:20 PM   #4
enjoi1968
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It's A BRAAAAAHtato,
Yo.

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Replace radiator, upper/lower hoses. Bleed coolant system. Drive happy.

If coolant goes missing, your oil looks like chocolate milk or heavy white smoke making it out of the exhaust, you got headgasket issues.
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Old 01-21-2013, 11:00 AM   #5
mila_pops
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Location: SLC, UT
Vehicle:
2004 Impreza WRX
Blue

Default

Thanks for all the info! I just dropped my car off at the shop near my house to get the radiator hose replaced. The mechanic said he'll replace it but says it could not be a cause for why my CEL is on--is that true? I know that there are a lot of reasons for why a CEL can come on, but I don't seem to have any other issues with the car except for the radiator issues. So, I guess I'll have to see how my car is acting once I get it back and go from there if the CEL is still on. Really hoping it's not the head gasket...
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Old 01-21-2013, 11:04 AM   #6
The Duke
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Bad heater core?
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