My 2007 cobalt is wasting too much gas, what could it be? Plus it has the engine light on

30

Asked by Dec 14, 2012 at 10:08 PM about the 2007 Chevrolet Cobalt

Question type: Maintenance & Repair

8 Answers

106,475

Having the "Check Engine" light on will make the engine run rich and waste gas. You can get the codes read at the auto parts stores and they can tell what is causing the problem. Write down the code number and post it here. Someone can tell you what it takes to repair your car.

1 people found this helpful.
30

I dnt have a code but i was told it was the oxygen sensor, yet i already change both sensors and like in 2/3 days the engine light went on. Do the oxygen cables have to be original?

3 people found this helpful.
106,475

The O2 sensor cables do not have to be original but they do have to be connected correctly. The upper O2 sensor(s) controls the amount of fuel sent to the engine. The lower sensor(s) are after the cat and monitor the health of the cat converter.

1 people found this helpful.
8,465

how is the engine temps? normal? tires are at proper inflation? idling/stop-n-go can be bad too.

3,215

just because the code is for an oxygen sensor doesnt mean that that is the problem the engine could be running leaner than normal in turn the computer compensates for the lean (not enough fuel) and dumps extra fuel in to the engine to get back to where it should be hense more fuel comsumtion the o2 sensors may have been working correctly it could be another skewed sensor or vacuum leak or fuel delivery problem to the engine if u give us the code that will most diffinately help to understand what is happening

115

could also be the mass air sensor. if it is bad could think the air is at 0 deg. f. and be dumping more fuel into your motor

do you need the second o2 sensor or will the car run rich?

I have cylinder 4 misfire code p0304 I already changed the coil for that cylinder and still the same problem and burning more fuel than usual

Your Answer

Cobalt

Looking for a Used Cobalt in your area?

CarGurus has 2,594 nationwide Cobalt listings starting at $2,008.

ZIP:

Chevrolet Cobalt Experts

  • #1
    munron
    Reputation
    1,280
  • #2
    lightGear
    Reputation
    1,220
  • #3
    dandyoun
    Reputation
    1,020
View All

Related Models For Sale

Used Chevrolet Malibu
480 Great Deals out of 49,315 listings starting at $2,000
Used Honda Civic
333 Great Deals out of 52,980 listings starting at $1,200
Used Ford Focus
406 Great Deals out of 76,949 listings starting at $1,195
Used Chevrolet Impala
397 Great Deals out of 25,595 listings starting at $799
Used Ford Mustang
270 Great Deals out of 37,082 listings starting at $2,150
Used Honda Accord
424 Great Deals out of 101,059 listings starting at $1,200
Used Toyota Corolla
571 Great Deals out of 66,738 listings starting at $1,449
Used Dodge Charger
242 Great Deals out of 32,689 listings starting at $1,800
Used Toyota Camry
761 Great Deals out of 70,900 listings starting at $1,200
Used Honda Civic Coupe
104 Great Deals out of 10,336 listings starting at $1,300

Used Cars For Sale

2010 Chevrolet Cobalt For Sale
8 Great Deals out of 483 listings starting at $2,008
2009 Chevrolet Cobalt For Sale
476 listings starting at $2,299
2008 Chevrolet Cobalt For Sale
3 Great Deals out of 463 listings starting at $2,229
2007 Chevrolet Cobalt For Sale
482 listings starting at $2,995
2006 Chevrolet Cobalt For Sale
489 listings starting at $2,800

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.