O2 sensor

Asked by Aug 31, 2009 at 02:07 PM about the 2006 Chrysler PT Cruiser

Question type: Maintenance & Repair

My 2006 Cruiser keeps having the O2 sensor turn on the engine light.  Besides a loose gas cap what else could be causing this.  It also is not getting very good gas mileage, only about 21mpg?

7 Answers

155

When do you refuel? Do you let it go pretty much to E before you get gas? If so that is not good for your car... You might be getting the gunky gas that is at the bottom of your tank running through your car. Now if you refuel before it drops below a quarter tank then I am not sure. But it sounds like it is probably got some gunk in it. Perhaps try that stuff that you put in your tank to help it. I'm blanking on the name of it. I have an 04 Cruiser and I have never had this problem. 21mpg seems to be the average according to fueleconomy.gov.

5 of 5 people found this helpful.
150

hey, when my o2 light came on, we were in the process of checking the EGR valve, but it was good. to change the spark plugs, we were unaware that we had to remove the whole intake manifold, to get at the plugs. when we did this, we smelled gas in the intake, which was being caused by the downstream o2 sensor, malfunctioning....it was completely gone, and burnt out. my mechanic friend, informed me that we needed to replace that sensor, because the PCM was now only getting data from one sensor, and dumping too much fuel into the mix, and the reason why your gas mileage is poor, is because gas is actually being wasted, and not being burned fast enough in the engine, and blowing out of your exhaust.....and you can smell the difference, when you replace the bad sensor, so your PT will have 2 again like it is supposed to. get your o2 sensor replaced, or the next time you see your intake off, you will smell gas...which is bad.

3 of 3 people found this helpful.
25

gas treatment use 89 or higher gas

1 of 1 people found this helpful.
95

I was having the same problem and started using a higher octane fuel, changed the air filter, and kept the tires inflated. Oh and driving smoothly, no qick stops and starts and less speeding helped too :-)

3 of 3 people found this helpful.
140

We have had the O2 sensor changed in our car twice. They change the sensor so the car can pass the smog check but the sensor comes back normally 24 hours later. Once it comes back on - it just stays on. The mechanic cannot figure out why the O2 sensor keeps going bad.

14 of 14 people found this helpful.
25

JUST REPLACE THE SENSOR IT'S ABOUT 35.00 AND IF YOU KNOW ANYONE HANDY EASY TO REPLACE

2 of 2 people found this helpful.
10

Do this, it works for my pt cruiser 04, drive your car at at 55mph whit the cruise control for 15 miles and then your car will be ready

1 of 1 people found this helpful.

Your Answer

PT Cruiser

Looking for a Used PT Cruiser in your area?

CarGurus has 2,972 nationwide PT Cruiser listings starting at $695.

ZIP:

Chrysler PT Cruiser Experts

  • #1
    Tom Demyan
    Reputation
    2,440
  • #2
    Gypsy Rose
    Reputation
    1,450
  • #3
    Kelly Little Ashford
    Reputation
    1,350
View All

Related Models For Sale

Used Chevrolet HHR
69 Great Deals out of 2,534 listings starting at $700
Used Volkswagen Beetle
188 Great Deals out of 8,331 listings starting at $1,399
Used Ford Mustang
746 Great Deals out of 42,169 listings starting at $1,300
Used Chrysler Sebring
27 Great Deals out of 2,767 listings starting at $1,200
Used Chrysler 300
363 Great Deals out of 16,702 listings starting at $1,000
Used MINI Cooper
250 Great Deals out of 8,995 listings starting at $1,999
Used Honda Civic
788 Great Deals out of 76,849 listings starting at $900
Used Dodge Caliber
65 Great Deals out of 2,296 listings starting at $888
Used Honda Accord
1,028 Great Deals out of 61,523 listings starting at $999
Used Ford Escape
1,109 Great Deals out of 84,774 listings starting at $999
Used Toyota Corolla
892 Great Deals out of 64,974 listings starting at $1,000
Used Ford Focus
727 Great Deals out of 53,967 listings starting at $1,495
Used Jeep Liberty
244 Great Deals out of 7,228 listings starting at $990
Used Jeep Grand Cherokee
889 Great Deals out of 71,204 listings starting at $995

Used Cars For Sale

2010 Chrysler PT Cruiser For Sale
3 Great Deals out of 69 listings starting at $3,000
2009 Chrysler PT Cruiser For Sale
145 listings starting at $2,995
2008 Chrysler PT Cruiser For Sale
321 listings starting at $2,500
2007 Chrysler PT Cruiser For Sale
5 Great Deals out of 470 listings starting at $695
2006 Chrysler PT Cruiser For Sale
7 Great Deals out of 595 listings starting at $1,000

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.