my gas mialage is poor

Asked by Mar 20, 2010 at 04:48 PM about the 1993 Chevrolet Cavalier RS

Question type: Maintenance & Repair

137K changed spark plugs in the process of changing wires and oil canged air filter why is my Gas Mialage around 20 on the freeway, also tires have Maximum air in them? is it a big deal ta Bypass my Catalatict converter if i dont have ta worry about smog testing, i wanted a honda but got desperate and bought this Cavalier, and  i don;t usually drive automatic transmission cars, but it seemed like a good deal, only i aint getting the type of gas mialage i was expecting:/

2 Answers

25

try the fuel filter, pvc valve, after that fill your tank and put some injuctor cleaner in it and then run your car and the when your tank is empty change you oil even if its early.

125

the fuel filter replacement is a good idea. also a fuel injection cleaning at youre local gm dealer is a great idea. bypassing the converter is a bad idea because the pre and post cat o2 sensors wont read anything cuz ur bypassing the converter so you will get a check engine light on and the powertrain control module (pcm) will tell the injectors 2 get more fuel into the cylinder. so in short the o2 sensors measure the effiency of the converter so by bypassing the cat it will throw a check engine light and possibly dump more fuel which wont help you.

2 of 2 people found this helpful.

Your Answer

Chevrolet Cavalier Experts

  • #1
    John Saffrahn
    Reputation
    3,020
  • #2
    dandyoun
    Reputation
    1,360
  • #3
    mbar1
    Reputation
    1,220
View All

Related Models For Sale

Used Chevrolet Impala
515 Great Deals out of 34,211 listings starting at $950
Used Ford Mustang
727 Great Deals out of 38,098 listings starting at $895
Used Honda Accord
1,115 Great Deals out of 62,340 listings starting at $1,199
Used Chevrolet Camaro
415 Great Deals out of 30,919 listings starting at $3,550
Used Honda Civic
794 Great Deals out of 73,924 listings starting at $1,400
Used Toyota Corolla
896 Great Deals out of 57,655 listings starting at $1,488
Used Toyota Camry
1,041 Great Deals out of 74,332 listings starting at $295
Used Chevrolet S-10
4 Great Deals out of 1,208 listings starting at $2,500

Used Cars For Sale

2004 Chevrolet Cavalier For Sale
183 listings starting at $1,250

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.