Question about 1999 Chevrolet Silverado 1500

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Smells like anitifreeze coming throuth the air conditionner vents in the truck. was a little low on water

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  • 63 Answers

Sounds like you have a leak in your heater core

Posted on Sep 13, 2010

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Posted on Jan 02, 2017

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Why when I start my car is there an odor coming from vents that smells like something is burning, and my Air Conditioner still blows, but it only blows out hot air. 2008 Chrysler Sebring. Help?


have an accredited ac shop as an ac cannot produce hot air only cold air so that means that the ac is not working (leaks low on gas etc). The hot air is from the heater in the car and the smell is probably wire overheating or the resistors are burning.

Aug 16, 2014 | 2008 Chrysler Sebring

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Bad smell coming from vents in my 2002 silhouette


did you change your hepa filter? Buy ozium and spray in your vents.

Jun 03, 2012 | 2002 Oldsmobile Silhouette

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Air conditionn blows out air but not cold air..do not hear compressor at all


Have the system charge checked, it is very likely low, if it is you have a leak.

May 25, 2012 | 2004 Saturn VUE

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What causes mist to come out of air conditioning vents


Its probably the evaporater trying to freeze up..Could be a little low on freon..If it smells sweet it could the heater core leaking,,but you would be losing coolant..

Sep 05, 2011 | 1999 Dodge Durango

1 Answer

The AC is not working now, just blows hot air. When it stopped working there was a different smell coming out. How do I fix it?


Well, if the a/c doesn't work, the smell will be different, because the evaporator (cold) isn't taking the water out of the air. It will smell as if you had just a vent and might smell a little bit mildewy.

Check the charge of r134a in the system, or just go ahead and attempt to charge it with a can of r134a refrigerant and a hose with an a/c quick connector attached available from your local auto parts store or even Walmart.

Follow the instructions and you might be able to have cold air coming out of the vents in a few minutes.

Hopefully, you do not have a fast leak that will let the r134a escape to the atmosphere.

Otherwise, it may be an electrical fuse blown somewhere.

Good luck to you.

Jul 07, 2010 | 2006 Infiniti M35

1 Answer

Where do we put freeon for the air conditionner


There are only 2 fittings on your ac system. The low side is the one you put in refrigerant (r134a). It is the smaller sized fitting usually located on low side hose that connects to receiver dryer (looks like a can on passenger side firewall). The quick connect fitting on any recharge hose will only fit on this correct fitting. The other one (high side) is too large to fit. So you cant put it in the wrong one.

Jun 06, 2010 | 1994 Lincoln Town Car

1 Answer

Urine smell in my cars a/c vents


WELL IT IS NEAR THE PASGERSIDE OF CAR UNDER NEATH AT FIRE WALL SOMTIME ESEAR TOO SEE HOSE FROM UNDER CAR TAKE HANGER TO CLEAN OUT HOSE OR LITTL AIR GOOD LUCK

Aug 12, 2009 | 2008 Chevrolet Impala

2 Answers

Little plume of white smoke coming from engine when idling only. Runs great and not overheating. Really bad smell coming through vents with AC on


A little white smoke is OK from 0-15 minutes of start up.

After warm up the condensation inside the exhaust pipe AND under the hood should be purged.

How many mile is on the engine?

A well care for engine should not have to worry about leaky (pin hole leak) head gasket until 120,000 miles.

The other sources of coolant leak is the freeze plugs.

DO NOT WAIT! Take 15-20 minutes out of your schedule and see where is it leaking on the idle.

it can be at


heater hoses
water pump
freeze plugs
and head gasket


I would start monitoring the coolant consumption by making the coolant reservoir tank.

Keep tab on oil level.

====

The common A/C air vent odor are

coolant leak (even pin hole leak) on the heater core.

KEEP CHECKING the center to passenger floor carpet for wetness and smell of coolant.

and/or

mold in side the air tube vent.
there is cleaner spray you can buy to keep the mold.


Aug 07, 2009 | 2000 Hyundai Sonata

1 Answer

Just bought 2002 gmc safaria and I think the blower is not working well very little air is coming out all the vents


it might because the is overheated or the water fluid or air pressure is low so you need to go to an auto part shop to get more fluid and it sould work

Jul 01, 2009 | 2002 GMC Safari

2 Answers

My Ford Ka smells like its overheating


check your water in the radiator bottle, normally that kind of smell is caused by low water level

Mar 29, 2009 | 2005 Ford Focus

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