What could have caused such a drastic drop in mpg so suddenly?

Asked by May 27, 2014 at 10:03 AM about the 2003 Honda Civic DX

Question type: Maintenance & Repair

My 2003 Honda civic has always averaged 30mpg until I had a cam sensor replaced. Since the I get 19-20mpg. Mechanics checked every out and found no reason for the drop in gas mileage. It could be coincidental and separate issues but what the hell. Do I have to live with this huge drop?

4 Answers

21,985

who can live with it? gas is expensive- that does not seem to be a coincidence- you replace the sensor and you start gettin' the bad mileage- now- WHY did you have the cam sensor replaced? sounds like you are goin' backwards-

1 of 1 people found this helpful.

My car would stall out and it was determined that my cam sensor was the issue. My car no longer stalls outs and runs well but the mileage is abysmal. My mechanic insisted everything checks out and the cam sensor would have nothing to do with mileage anyway. They spent an hour going through everything and found everything up spec. They did not check the torgue?? something or other because they couldn't find a 'portal?' to it.

To replace this part the only point of contact to cause friction would be the timing belt plastic cover, find out if they pulled it back off and checked for improper scratch/rub marks. I would take it to another shop if you cant check it yourself - you will find a video on the University of YouTube

I will check that out Rex and let you know what happens. Thanks so much!

Your Answer

Add photo

Related Questions

  • 99 honda civic cranks won't start 10 answers

    Our 99 Honda Civic 4 door sedan (200,000 miles) just quit running while pulling out of a parking lot. Almost as if it had run out of gas (plenty of gas). There was NO warning of any kind that there...

    1999 Honda Civic LX

    -

    Maintenance & Repair

  • Why would my car just ouit while driving down the road and not restart 3 answers

    no warning it just quit

    1999 Honda Civic LX

    -

    Maintenance & Repair

  • my honda civic cuts off when I give it gas, it idles and starts just fine but when i put it in gear and give it gas it cuts off 63 answers

    what is wrong with my 1992 civic it cuts off when I give it gas, it idles and starts just fine but when i put it in gear and give it gas it cuts off

    1992 Honda Civic LX

    -

    Maintenance & Repair

  • 94 Honda Civic 1 answer

    While driving my 94 Honda Civic everything seems to be going well, but suddenly my Honda starts to jerk, slow down as if its chocking. I'll press on the gas but car wouldn't move pass 5mph. I'll le...

    1994 Honda Civic LX

    -

    Maintenance & Repair

  • poor gas mileage 15 answers

    Love the car - bought Dec. 06. But gas mileage dreadful - under 20 mpg. Improved after air filter changed, but back to low miles again. Is this standard? I have about 25M miles on the car. My 99 ...

    2003 Honda CR-V

    -

    Maintenance & Repair

Civic

Looking for a Used Civic in your area?

CarGurus has 88,604 nationwide Civic listings starting at $995.

ZIP:

Search Honda Civic Questions

Honda Civic Experts

#1 Tom Demyan
Tom Demyan
Reputation 980
#1 Jonathan Ford
Jonathan Ford
Reputation 980
#3 Takoda Fraser
Takoda Fraser
Reputation 970
View All

Related Models For Sale

Used Honda Accord
812 Great Deals out of 84,287 listings starting at $1,050
Used Honda Civic Coupe
187 Great Deals out of 16,851 listings starting at $800
Used Toyota Corolla
785 Great Deals out of 73,830 listings starting at $1,995
Used Toyota Camry
1,002 Great Deals out of 90,919 listings starting at $650
Used Honda CR-V
894 Great Deals out of 61,171 listings starting at $988
Used Nissan Altima
1,030 Great Deals out of 81,564 listings starting at $1,200
Used Mazda MAZDA3
229 Great Deals out of 31,862 listings starting at $1,495
Used Hyundai Elantra
571 Great Deals out of 52,575 listings starting at $1,499
Used Honda Accord Coupe
178 Great Deals out of 10,520 listings starting at $1,995
Used Ford Focus
539 Great Deals out of 57,171 listings starting at $1,095
Used Ford Mustang
470 Great Deals out of 45,735 listings starting at $1,999
Used Nissan Sentra
480 Great Deals out of 54,266 listings starting at $900
Used BMW 3 Series
972 Great Deals out of 31,729 listings starting at $1,000
Used Volkswagen Jetta
447 Great Deals out of 40,941 listings starting at $950

Used Cars For Sale

2017 Honda Civic For Sale
63,757 listings starting at $16,684
2016 Honda Civic For Sale
64 Great Deals out of 3,213 listings starting at $13,888
2015 Honda Civic For Sale
98 Great Deals out of 3,468 listings starting at $9,981
2014 Honda Civic For Sale
205 Great Deals out of 6,464 listings starting at $8,000
2013 Honda Civic For Sale
82 Great Deals out of 2,668 listings starting at $6,995

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.