check engine light
Thread Starter
Melting Slicks
Joined: Mar 2006
Posts: 2,599
Likes: 34
From: Grand Rapids Michigan West Michigan Crew
2015 C5 of the Year Finalist
St. Jude Donor '07-'08-'09
check engine light
Hello,
i am somewhat new the the C4 world as far as mechanicals and diagnostic, so i still have tons to learn. My check engine light came on about 2 weeks ago and the shop scanned it (for Free!) and said catalyst inefficency, so i tried to replace the O2 sensor first, just in case, as this is a whole lot cheaper! and it came on again. I have heard these cars are known for dumping too much fuel at start up or something like that, so it is putting fuel in the cats. Are the cats shot? or is this a common thing like i heard. and if there is a problem, how safe is it to wait a few weeks before i fix it.
I have heard peoples nightmares about cloged cats and dont want to be the next victim!
car is a 96 LT4
TIA
i am somewhat new the the C4 world as far as mechanicals and diagnostic, so i still have tons to learn. My check engine light came on about 2 weeks ago and the shop scanned it (for Free!) and said catalyst inefficency, so i tried to replace the O2 sensor first, just in case, as this is a whole lot cheaper! and it came on again. I have heard these cars are known for dumping too much fuel at start up or something like that, so it is putting fuel in the cats. Are the cats shot? or is this a common thing like i heard. and if there is a problem, how safe is it to wait a few weeks before i fix it.
I have heard peoples nightmares about cloged cats and dont want to be the next victim!
car is a 96 LT4
TIA
Racer
Joined: Apr 2004
Posts: 487
Likes: 0
From: Huntsville AL
Mine started coming apart sometime near 90k or so, I'd go ahead and replace them with random cats or something unless you can just go w/o any at all. I can't say for sure that's your problem, but getting rid of them shouldn't cost much if you can get away with it.
Racer
Joined: Mar 2006
Posts: 269
Likes: 0
From: Newport News VA
Cruise-In VII Veteran
Originally Posted by blackLT496
Hello,
i am somewhat new the the C4 world as far as mechanicals and diagnostic, so i still have tons to learn. My check engine light came on about 2 weeks ago and the shop scanned it (for Free!) and said catalyst inefficency, so i tried to replace the O2 sensor first, just in case, as this is a whole lot cheaper! and it came on again. I have heard these cars are known for dumping too much fuel at start up or something like that, so it is putting fuel in the cats. Are the cats shot? or is this a common thing like i heard. and if there is a problem, how safe is it to wait a few weeks before i fix it.
I have heard peoples nightmares about cloged cats and dont want to be the next victim!
car is a 96 LT4
Welcome to the show
Mine came on when it was cooler outside but my Vette has been tuned to set the spark all the way up so it leaned the gas some. The back O2 does not get hot enuff, and the new 10% soybean gas does not burn as hot as the old gas
TIA
i am somewhat new the the C4 world as far as mechanicals and diagnostic, so i still have tons to learn. My check engine light came on about 2 weeks ago and the shop scanned it (for Free!) and said catalyst inefficency, so i tried to replace the O2 sensor first, just in case, as this is a whole lot cheaper! and it came on again. I have heard these cars are known for dumping too much fuel at start up or something like that, so it is putting fuel in the cats. Are the cats shot? or is this a common thing like i heard. and if there is a problem, how safe is it to wait a few weeks before i fix it.
I have heard peoples nightmares about cloged cats and dont want to be the next victim!
car is a 96 LT4
Welcome to the show
Mine came on when it was cooler outside but my Vette has been tuned to set the spark all the way up so it leaned the gas some. The back O2 does not get hot enuff, and the new 10% soybean gas does not burn as hot as the old gasTIA
Thread Starter
Melting Slicks
Joined: Mar 2006
Posts: 2,599
Likes: 34
From: Grand Rapids Michigan West Michigan Crew
2015 C5 of the Year Finalist
St. Jude Donor '07-'08-'09
I talked to guys at exotic muscle today and there are no stock replacement R/T cats. and regular cats are close to 600 each i believe!, one is half the price of a complete header with cat set up
So im gunna take that as good news, looks like long tubes and R/T bullet cats are just around the corner
now i gotta decide between exotic muscle and tpis.......
So im gunna take that as good news, looks like long tubes and R/T bullet cats are just around the corner now i gotta decide between exotic muscle and tpis.......
Thread Starter
Melting Slicks
Joined: Mar 2006
Posts: 2,599
Likes: 34
From: Grand Rapids Michigan West Michigan Crew
2015 C5 of the Year Finalist
St. Jude Donor '07-'08-'09
now all i need to know is will it hurt to drive it the way it is for a few weeks while i save up a bit. it isn't a daily driver, mostly just out on weekends. but i have a cruise planed for this weekend and dont want to miss it!
