strong smell when running AC on max - The 1947 - Present Chevrolet & GMC Truck Message Board Network

vegas80step · 09-23-2011, 06:34 PM

Whats up guys...

(1980 step side)
When I run my AC on max is smells like I've stuck my head under my hood..
but if a run my AC on normal, I don't get that much of a smell...

If it's running on max it's pulling the air from inside the cab right? So this means I might have a problem in my firewall? a hole?

Is there a cab filter? Should i just buy a gas mask??

any ideas?

thanks for any input...

tucsonjwt · 09-23-2011, 06:49 PM

I would check for any coolant leaks, especially at the heater core inside on the passenger side floor (wet carpet?) Also check for burnt coolant smell under the hood.

Hoods69BadBowTie · 09-23-2011, 10:25 PM

Sounds like you got a coolant leak to me. I would check your heater core to make sure it's still good. Or do you have an exhust leak and it's coming right into the cab be something else to check out.
Posted via Mobile Device

vegas80step · 09-24-2011, 10:04 AM

Thanks for the input guys, I'll check out any possible coolant leaks. i've check out the exhust pretty thoroughly, but you never know.

Thanks again fellas...

Goldfinger · 09-24-2011, 06:37 PM

remember that it sucks air from the cab when on max so check the intake for the air

09-23-2011, 06:34 PM	#1
vegas80step Registered User Join Date: Jul 2011 Location: Las Vegas, NV Posts: 329	strong smell when running AC on max Whats up guys... (1980 step side) When I run my AC on max is smells like I've stuck my head under my hood.. but if a run my AC on normal, I don't get that much of a smell... If it's running on max it's pulling the air from inside the cab right? So this means I might have a problem in my firewall? a hole? Is there a cab filter? Should i just buy a gas mask?? any ideas? thanks for any input...

09-23-2011, 06:49 PM	#2
tucsonjwt Registered User Join Date: Jul 2007 Location: Tucson, AZ Posts: 3,189	Re: strong smell when running AC on max I would check for any coolant leaks, especially at the heater core inside on the passenger side floor (wet carpet?) Also check for burnt coolant smell under the hood.

09-23-2011, 10:25 PM	#3
Hoods69BadBowTie Chevys Kick A$$ Join Date: Jan 2005 Location: Zootown, MT Posts: 12,699	Re: strong smell when running AC on max Sounds like you got a coolant leak to me. I would check your heater core to make sure it's still good. Or do you have an exhust leak and it's coming right into the cab be something else to check out. Posted via Mobile Device __________________ HOODS is what I answer too -'79, '77, '88 Pickup Sold, '85 Camaro, '83 T/A, '81,'83,'90 K5 Blazer All Sold -'79 3/4 ton "Big Yellow Bananna" Lifted 4spd. 39.5 TSL Swampers, The money Pit -'86 K5 Blazer Silverado 6.2 4" lift 35"s -'95 Ext. Cab Shorty 4" Tuff Country rolling 35" M/T's -'83 Monte Carlo T-Tops. 126,500 Original Miles -LATER I would rather push a Chevy then drive a ford!!

09-24-2011, 10:04 AM	#4
vegas80step Registered User Join Date: Jul 2011 Location: Las Vegas, NV Posts: 329	Re: strong smell when running AC on max Thanks for the input guys, I'll check out any possible coolant leaks. i've check out the exhust pretty thoroughly, but you never know. Thanks again fellas...

09-24-2011, 06:37 PM	#5
Goldfinger Registered User Join Date: May 2010 Location: laurel hill Fl Posts: 645	Re: strong smell when running AC on max remember that it sucks air from the cab when on max so check the intake for the air __________________ 1985 C10 Custom Deluxe LWB 305/700r4 [ Goldfinger ] 1999 k3500 crew cab dually 6.5tdi/4l80e

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