Can replacing catalytic converter cause cracked exhaust manifold??

Asked by Chuck Jan 11, 2021 at 11:14 AM about the 2004 Toyota Corolla

Question type: Maintenance & Repair

Took my 2004 Toyota Corolla in and had the
catalytic converter replaced. Got it back and the
engine sounded "fluttery" and could now smell
fumes. Took it back and was told the exhaust
manifold had a crack in it and it would be another
$200 to weld it up. Pretty sure the engine noise and
the smell weren't present when I dropped the car
off. What's the likelihood the crack came about
while the catalytic converter was being replaced?
Would that be unusual, or not? Repair shop did not
acknowledge any responsibility for the crack.

1 Answer

Not likely. If the old cat was plugged up and it caused the exhaust to run hot the extra heat may have cracked the manifold.

1 people found this helpful.

Your Answer:

Own this car?

Share your experience with others.

2004 Toyota Corolla

Review another car

CarGurus Experts

  • #1
    G A Arne
  • #2
    Jeff Polhemus
  • #3
View All

Know more, shop wisely


Related Models For Sale

Used Toyota Camry
1,983 Great Deals out of 33,080 listings starting at $1,700
Used Honda Civic
1,365 Great Deals out of 25,551 listings starting at $1,152
Used Honda Accord
1,487 Great Deals out of 28,756 listings starting at $1,699
Used Toyota RAV4
1,617 Great Deals out of 27,294 listings starting at $2,888
Used Toyota Tacoma
1,427 Great Deals out of 26,974 listings starting at $3,495
Used Honda CR-V
1,641 Great Deals out of 23,618 listings starting at $1,900
Used Hyundai Elantra
1,121 Great Deals out of 21,101 listings starting at $1,550
Used Toyota Prius
600 Great Deals out of 8,100 listings starting at $2,495
Used Mazda MAZDA3
442 Great Deals out of 8,405 listings starting at $2,500
Used Nissan Sentra
837 Great Deals out of 16,415 listings starting at $1,999
Used Toyota Highlander
993 Great Deals out of 18,371 listings starting at $3,499
Used Nissan Altima
1,340 Great Deals out of 26,019 listings starting at $1,900
Used Toyota 4Runner
778 Great Deals out of 11,473 listings starting at $3,999

Used Cars for Sale

2023 Toyota Corolla For Sale
2,124 listings starting at $21,928
2022 Toyota Corolla For Sale
89 Great Deals out of 1,791 listings starting at $16,950
2021 Toyota Corolla For Sale
236 Great Deals out of 3,588 listings starting at $15,799
2020 Toyota Corolla For Sale
369 Great Deals out of 4,962 listings starting at $10,899
2019 Toyota Corolla For Sale
127 Great Deals out of 1,419 listings starting at $8,800

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. Content will be removed if CarGurus becomes aware that it violates our policies.