We have a 03 Corolla that had a leaky radiator. The leak started while we were on a 1400 mile trip. kept on adding coolant and finished the trip. Near the end of teh trip could hear a knocking or slapping nolise when the engine was loaded. I changed the radiator and now the engine is VERY sluggish and when under load the engine knocks/rattles/pings, what ever noise it is it is bad. I pulled the plugs and all 4 are white. I pulled the O2 sensor and it also is covered with a white coating. I think the engine is running lean and I am wondering if the coolant was sucked through the air filter and damaged the injectors or the cat. The engind never indicated getting hot during the radiator problems. Thanks for the help.

Asked by Oct 02, 2014 at 11:17 PM about the 2003 Toyota Corolla CE

Question type: Maintenance & Repair

03 Corolla with 455,000 miles.  Still runs good and uses only a very little oil.  No indication
of overheating but pings very badly and is very sluggish.

2 Answers

4,075

You sure have gotten your money's worth out of that Corolla! Are you the original owner? All things being equal, the two problems may not be related. Typically, a coolant problem will not cause a performance issue (except overheating but you said no temp light was coming on). You may want to look at the cat converter and see if it has gotten plugged. Age sometimes does this and yours certainly qualifies on that basis.

1 out of 1 people think this is helpful.

Yes, I'm the original owner. How do I test to determine if the cat is bad? Thanks for your help!

Your Answer

Add photo

Related Questions

Search Toyota Corolla Questions

Toyota Corolla Experts

#1 FordNut
FordNut
Reputation 15,380
#2 Tom Demyan
Tom Demyan
Reputation 2,110
#3 tenspeed
tenspeed
Reputation 1,780
View All

Related Models For Sale

Used Toyota Camry
1,494 Great Deals out of 100,460 listings starting at $700
Used Honda Civic
1,149 Great Deals out of 64,597 listings starting at $1,195
Used Honda Accord
1,186 Great Deals out of 77,678 listings starting at $969
Used Toyota RAV4
1,134 Great Deals out of 54,188 listings starting at $1,350
Used Nissan Altima
1,104 Great Deals out of 85,891 listings starting at $1,675
Used Nissan Sentra
751 Great Deals out of 52,637 listings starting at $1,800
Used Hyundai Elantra
928 Great Deals out of 53,193 listings starting at $1,799
Used Toyota Tacoma
774 Great Deals out of 33,026 listings starting at $1,900
Used Mazda MAZDA3
469 Great Deals out of 26,996 listings starting at $1,990
Used Honda CR-V
1,292 Great Deals out of 75,547 listings starting at $1,995
Used Toyota Prius
514 Great Deals out of 24,379 listings starting at $1,700
Used Toyota Yaris
94 Great Deals out of 10,026 listings starting at $2,590
Used Ford Focus
1,266 Great Deals out of 58,539 listings starting at $1,395
Used Toyota 4Runner
380 Great Deals out of 20,140 listings starting at $2,499
Used Hyundai Sonata
966 Great Deals out of 49,759 listings starting at $700

Used Cars For Sale

2017 Toyota Corolla For Sale
33,168 listings starting at $15,596
2016 Toyota Corolla For Sale
114 Great Deals out of 8,551 listings starting at $10,977
2015 Toyota Corolla For Sale
358 Great Deals out of 6,918 listings starting at $8,995
2014 Toyota Corolla For Sale
252 Great Deals out of 5,589 listings starting at $7,962
2013 Toyota Corolla For Sale
190 Great Deals out of 3,119 listings starting at $6,490