ihave a 92 lexus ls 400 .had new cats, timing belt water pump,cap,rotor,plugs wires. car was runing perfect for 6 months all of a sudden lost all power could not go aver 40 .checked underneath the car .the cats were cherry red.what are the probablecauses for this?

Asked by Jun 21, 2012 at 09:50 PM about the 1992 Lexus LS 400 Base

Question type: Maintenance & Repair

what would cause brand new cats to go bad?

1 Answer

254,705

Unburnt fuel getting into your exhaust will cause the cats to get blocked. So with all the parts you mentioned being replaced, I didn;'see the ignition coil/coils. You should have noticed a miss or ruff running engine, no? A check engine light?

2 of 2 people found this helpful.

Your Answer

Lexus LS 400 Experts

  • #1
    Tom Demyan
    Reputation
    480
  • #2
    dandyoun
    Reputation
    220
  • #3
    Travis Kendel
    Reputation
    190
View All

Related Models For Sale

Used Lexus GS 300
22 Great Deals out of 695 listings starting at $1,900
Used Toyota Camry
1,041 Great Deals out of 72,820 listings starting at $295
Used Lexus ES 300
10 Great Deals out of 836 listings starting at $1,999
Used BMW 7 Series
142 Great Deals out of 5,738 listings starting at $2,999
Used Lexus SC 400
59 listings
Used BMW 3 Series
1,145 Great Deals out of 32,953 listings starting at $1,000
Used BMW 5 Series
470 Great Deals out of 16,144 listings starting at $1,995

Used Cars For Sale

2000 Lexus LS 400 Base For Sale
3 Great Deals out of 31 listings starting at $2,700
1998 Lexus LS 400 Base For Sale
27 listings starting at $2,900

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.