Why is my catalytic converter glowing

30

Asked by Apr 24, 2015 at 06:52 AM about the 2003 Ford F-150 XLT Extended Cab 4WD SB

Question type: Maintenance & Repair

previous blew out spark plug out of
head

10 Answers

30

Catalytic clogged

1 of 1 people found this helpful.
254,075

Glowing cat is from a rich condition. So excess fuel is being burned int the cats vs the engine. Check for a misfire, or leaky fuel injector. How is the truck running? CEL on?

254,075

Unfortunately if you let this condition persist, then yes the cataltic convertor might be ready to replace. But fix the reason of the truck is running rich first, becuase you will be replacing the new cat in short order.

30

Intermittent misfire on 3 what is CEL

30

Both sides were hot I could understand if one side was hot and the other normal so it puzzled me

1 of 1 people found this helpful.
30

Check engine light is not on did put a new coil pack on when changed was on previously

1 of 1 people found this helpful.
254,075

CEL is Check engine light, fix the misfire condition, by changing the plugs, and or coil.

19,235

If your plug comes out of the head then raw fuel has the potential to contaminate the cat as it won't be firing and burning fuel. Ahh the ford triton motor

27,065

This is an example of a converter meltdown. The converter was super- heated due to a raw fuel condition in the exhaust flow. The excess unburned fuel ignited when it struck the hot ceramic catalyst and drove the temperature far above the normal operating condition of the converter. The ceramic catalyst is unable to withstand the extremely high temperature and begins to melt. The ceramic collapses and the converter is destroyed. The melted ceramic may block the exhaust flow and cause additional damage to the engine. A converter glowing red-hot, or evidence of heat discoloration, confirms this situation. The condition that led to this converter meltdown could be the result of a number of malfunctions including faulty oxygen sensor, an incorrect fuel mixture, worn spark plugs or plug wires, a faulty check valve, incorrect ignition timing, sticking float, faulty fuel injectors or other ignition malfunctions.

6 of 6 people found this helpful.

How do prevent my new cat from clogging?

Your Answer

F-150

Looking for a Used F-150 in your area?

CarGurus has 179,996 nationwide F-150 listings starting at $1,300.

ZIP:

Ford F-150 Experts

  • #1
    OJ
    Reputation
    8,910
  • #2
    dandyoun
    Reputation
    4,540
  • #3
    tennisshoes
    Reputation
    3,060
View All

Related Models For Sale

Used Chevrolet Silverado 1500
2,098 Great Deals out of 167,326 listings starting at $1,888
Used GMC Sierra 1500
871 Great Deals out of 65,537 listings starting at $1,500
Used Ford F-250 Super Duty
378 Great Deals out of 43,935 listings starting at $2,400
Used Dodge Ram 1500
355 Great Deals out of 10,813 listings starting at $1,199
Used Toyota Tundra
477 Great Deals out of 31,847 listings starting at $1,999
Used Toyota Tacoma
595 Great Deals out of 42,094 listings starting at $1,995
Used Ford Mustang
709 Great Deals out of 38,398 listings starting at $895
Used Nissan Titan
210 Great Deals out of 19,657 listings starting at $3,495
Used Chevrolet Colorado
248 Great Deals out of 30,985 listings starting at $2,495
Used Ford F-350 Super Duty
334 Great Deals out of 23,767 listings starting at $2,488
Used Chevrolet Silverado 2500HD
320 Great Deals out of 29,006 listings starting at $2,000
Used Chevrolet Tahoe
663 Great Deals out of 39,225 listings starting at $1,000
Used Ford Explorer
813 Great Deals out of 62,574 listings starting at $1,000

Used Cars For Sale

2018 Ford F-150 For Sale
27,619 listings starting at $20,990
2017 Ford F-150 For Sale
117 Great Deals out of 82,876 listings starting at $17,990
2016 Ford F-150 For Sale
118 Great Deals out of 7,637 listings starting at $18,989
2015 Ford F-150 For Sale
279 Great Deals out of 10,496 listings starting at $14,999
2014 Ford F-150 For Sale
429 Great Deals out of 13,638 listings starting at $10,849

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.