Check engine light comes on why?

335

Asked by Mar 07, 2012 at 12:19 AM about the 1993 Ford Thunderbird LX

Question type: Maintenance & Repair

Hello I have a 93 Tbird and my check engine light comes on. Now I'm pretty sure I don't have a cat it's just a stright
pipe now could that be why. It may think the cat is still in or maybe it's just a oxy senser.

2 Answers

845

yes it is more then likely on do to its o2sensor reading is telling it to come on cause the reference signalon the lower o2 sensor is following the upper o2 sensors reading ,when the lower is not suppose to it actual job is to monitor the un burnt fuel in the cat converter , so yes is the answer more then likely cause the cat converter is missing.

1 of 1 people found this helpful.
335

Thanks. Could it be reprogrammed?

1 of 1 people found this helpful.

Your Answer

Add photo

Related Questions

  • dashboard ingition lights on when key is turned aniclockwise WHY? 8 answers

    I have a 1963 Thunderbird that works fine, when I turn the ignition key clockwise everything is fine, the engine starts etc. , then when I turn the key anticlockwize it turns off correctly BUT if I co...

    1963 Ford Thunderbird

    -

    Maintenance & Repair

  • Why are tail lights staying on constantly? 6 answers

    1965 Thunderbird (standard model)... The TAIL LIGHTS are on constantly even when all light switches are in the "off" position. Probable cause or repair suggestions?????

    1965 Ford Thunderbird

    -

    Maintenance & Repair

  • Why would I loose both brake lights and tail lights on my 64 thunderbird? 5 answers

    All other lights work. Could it have anything to do with the nuetral safety switch?

    1964 Ford Thunderbird

    -

    Maintenance & Repair

  • Why will the brake lights on my 1964 Thunderbird not work? 5 answers

    Brake lights do not come on at all but the tail lights will still come on when you turn on the lights.

    1964 Ford Thunderbird

    -

    Maintenance & Repair

  • check engine light 1 answer

    when i drive for a while my check engine light comes on and i dont know why any one else have this prob and what does it mean. every thing is running very good nothing is wrong it just comes on after...

    1989 Ford Bronco II

    -

    Maintenance & Repair

Search Ford Thunderbird Questions

Ford Thunderbird Experts

#1 Larry Sturgis
Larry Sturgis
Reputation 1,560
#2 Tom Demyan
Tom Demyan
Reputation 1,490
#3 tennisshoes
tennisshoes
Reputation 1,220
View All

Related Models For Sale

Used Ford Mustang
472 Great Deals out of 45,735 listings starting at $1,999
Used Chevrolet Corvette
120 Great Deals out of 20,753 listings starting at $3,000
Used Chevrolet Camaro
225 Great Deals out of 30,943 listings starting at $1,217
Used Ford F-150
2,194 Great Deals out of 206,316 listings starting at $1,499
Used Mercedes-Benz SL-Class
42 Great Deals out of 2,825 listings starting at $3,500
Used Pontiac Firebird
12 Great Deals out of 724 listings starting at $3,990
Used Lincoln Continental
4,507 listings starting at $41,448
Used Ford Taurus
249 Great Deals out of 20,433 listings starting at $699
Used Chevrolet Impala
521 Great Deals out of 31,725 listings starting at $1,450
Used BMW 3 Series
974 Great Deals out of 31,729 listings starting at $1,000
Used Mazda MX-5 Miata
52 Great Deals out of 4,229 listings starting at $1,995
Used Mercury Cougar
200 listings

Used Cars For Sale

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.