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

775

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 out of 1 people think this is helpful.
335

Thanks. Could it be reprogrammed?

1 out of 1 people think this is 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

UK Questions

Are you a UK consumer? CarGurus now has a discussion forum in the UK.

Ford Thunderbird Experts

#1 oldtimer37
oldtimer37
Reputation 1,450
#2 Tom Demyan
Tom Demyan
Reputation 1,440
#3 tennisshoes
tennisshoes
Reputation 1,100
View All

Related Models For Sale

Used Ford Mustang
545 Great Deals out of 43,035 listings starting at $1,699
Used Chevrolet Corvette
277 Great Deals out of 20,556 listings starting at $3,688
Used Chevrolet Camaro
417 Great Deals out of 40,746 listings starting at $3,500
Used Ford F-150
3,112 Great Deals out of 209,132 listings starting at $1,200
Used Mercedes-Benz SL-Class
71 Great Deals out of 3,149 listings starting at $4,000
Used Pontiac Firebird
15 Great Deals out of 782 listings starting at $2,495
Used Chevrolet Impala
919 Great Deals out of 35,385 listings starting at $1,700
Used Mercury Cougar
231 listings
Used Jeep Wrangler
522 Great Deals out of 18,485 listings starting at $2,500
Used Porsche 911
135 Great Deals out of 4,473 listings starting at $8,901

Used Cars For Sale