Car is over heating and heater only blows hot air while driving?

Asked by Apr 23, 2015 at 03:22 PM about the 2003 Nissan Sentra GXE

Question type: Maintenance & Repair

I have an 03 Nissan sentra And
recently the car has started over
heating. But since I've had the car (4
months now) the heater only blows
hot air while I'm pressing on the gas.
I have replaces the thermostat, twice
now because we thought the initial
one was faulty. But it is still over
heating after driving only for a short
distance. The coolant is completely
full. My check engine light came on
and presented a code that said this
Catalyst system efficiently below
threshold
Probable cause:
Large vacuum leak
Fuel system fault
Ignition system fault
Failed bank 1 catalytic converter


Now my car has been starting
roughly for awhile but I thought it
was the battery. And it drives
smoothly although it seems I'm not
getting the mpg as I'm supposed to.
I'm averaging 25 when a sentra gets
30-36

Thank you...

2 Answers

390

Head gasket is leaking coolant into cylinders.

OLX it man

Your Answer

Add photo

Related Questions

Sentra

Looking for a Used Sentra in your area?

CarGurus has 52,583 nationwide Sentra listings starting at $700.

ZIP:

Search Nissan Sentra Questions

Nissan Sentra Experts

#1 L_R
L_R
Reputation 1,310
#2 Doran Harney
Doran Harney
Reputation 1,290
#3 Tom Demyan
Tom Demyan
Reputation 1,040
View All

Related Models For Sale

Used Nissan Altima
1,271 Great Deals out of 74,945 listings starting at $1,800
Used Toyota Corolla
969 Great Deals out of 69,189 listings starting at $1,800
Used Honda Civic
860 Great Deals out of 84,019 listings starting at $750
Used Honda Accord
1,078 Great Deals out of 66,787 listings starting at $1,000
Used Toyota Camry
1,247 Great Deals out of 82,714 listings starting at $750
Used Nissan Maxima
350 Great Deals out of 24,206 listings starting at $1,800
Used Hyundai Elantra
662 Great Deals out of 42,589 listings starting at $900
Used Ford Focus
844 Great Deals out of 53,940 listings starting at $700
Used Hyundai Sonata
856 Great Deals out of 48,318 listings starting at $1,495
Used Mazda MAZDA3
393 Great Deals out of 28,804 listings starting at $1,059
Used Volkswagen Jetta
568 Great Deals out of 44,237 listings starting at $800

Used Cars For Sale

2017 Nissan Sentra For Sale
15 Great Deals out of 34,967 listings starting at $10,490
2016 Nissan Sentra For Sale
88 Great Deals out of 3,376 listings starting at $8,999
2015 Nissan Sentra For Sale
129 Great Deals out of 3,606 listings starting at $7,495
2014 Nissan Sentra For Sale
212 Great Deals out of 4,181 listings starting at $5,890
2013 Nissan Sentra For Sale
75 Great Deals out of 1,869 listings starting at $4,950

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.