Why is there a gas smell inside the car when starting car in A/C heater on?

Asked by Dec 18, 2013 at 02:46 PM about the 2006 Nissan Altima 2.5 S

Question type: Maintenance & Repair

I have a 2006 Nissan Altima 2.5 S with 111,000 miles on it. Lately, I smell sweet
gasoline smell when I start the car engine with A/C heater on. I can smell it through the
front A/C vent which stays for a couple of minutes and then fades away when I drive the
car for about a 1/2 a mile. I noticed this started only when it is cold outside and when I
start my engine in the morning to go to work, or after work to get home. I also tried
turning the A/C to cold the smell goes away. Is this something serious and should be
taken care of immediately?

2 Answers

6,835

I think what you are smelling is a coolant leak, because you mention the word "sweet" and heater "ON". Gasoline NEVER has a sweet smell but antifreeze ALWAYS has a sweet smell/taste and that is why animals drink it and die. Check your passenger floor for tell tale signs of coolant leaking from the heater core.

1 out of 1 people think this is helpful.
100

Take care right away. if it is a coolant leak you dont want to overheat if it gets worse, but if it was that is would get worse as you warm up so i believe it is a fuel leak but from a injector. when air is pulled from outside it brings the fumes that accumulates from higher fuel pressure in fuel lines when car is stopped. it wont do this as much while you drive so it goes away. just a thought.

4 out of 4 people think this is helpful.

Your Answer

Add photo

Related Questions

Search Nissan Altima Questions

Nissan Altima Experts

#1 Tom Demyan
Tom Demyan
Reputation 1,980
#2 Cassie Sapphire
Cassie Sapphire
Reputation 630
#3 putolile
putolile
Reputation 620
View All

Related Models For Sale

Used Nissan Maxima
269 Great Deals out of 26,544 listings starting at $1,990
Used Honda Accord
706 Great Deals out of 88,073 listings starting at $699
Used Toyota Camry
818 Great Deals out of 90,439 listings starting at $950
Used Honda Civic
514 Great Deals out of 88,834 listings starting at $1,499
Used Nissan Sentra
459 Great Deals out of 57,313 listings starting at $1,499
Used Toyota Corolla
696 Great Deals out of 72,724 listings starting at $600
Used Chevrolet Malibu
833 Great Deals out of 82,006 listings starting at $1,500
Used Hyundai Sonata
612 Great Deals out of 52,190 listings starting at $995
Used Kia Optima
409 Great Deals out of 30,604 listings starting at $2,800
Used Dodge Charger
284 Great Deals out of 27,074 listings starting at $2,500
Used Ford Fusion
970 Great Deals out of 84,655 listings starting at $1,900
Used Chevrolet Impala
514 Great Deals out of 29,231 listings starting at $995
Used Hyundai Elantra
471 Great Deals out of 53,068 listings starting at $1,699

Used Cars For Sale

2017 Nissan Altima 2.5 S For Sale
12,287 listings starting at $16,396
2016 Nissan Altima 2.5 S For Sale
41 Great Deals out of 3,415 listings starting at $11,595
2015 Nissan Altima 2.5 S For Sale
152 Great Deals out of 5,337 listings starting at $9,630
2014 Nissan Altima 2.5 S For Sale
113 Great Deals out of 3,514 listings starting at $4,900
2013 Nissan Altima 2.5 S For Sale
28 Great Deals out of 1,346 listings starting at $4,200