Hello all,
Hoping to get some help here. Got a 2010 SHO. What happened initially like a few weeks earlier was that my brother got a P0301 code which if I remember is s misfire somewhere. Then like 2 weeks later he noticed that the car would go nowhere or rev beyound 3K RPM's. So when I went to check it I pulled a P0420 code which is catalytic threshold below efficiency on Bank 1 and that usually means the cat or cats are bad. Although could also be oxygen sensors. Sure enough, pulled the cat out and it was destroyed. Replaced the cat. Told my brother to replace both o2 sensors to be on the safe side but they only had one so he's got a brand new primary but the old secondary is still on. So another code p0420 comes up after driving it for 20 or so miles. I mean there's something that destroyed the cat in the first place. But in 20 minutes? Is it possible? Unless it's running super rich or there's an ignition problem or whatever else. Now, for the folks that have experienced this type of thing, what is the common problems on this particular vehicle? I checked the coils and they fire fine as far as I can tell. If anyone has some insight I'd appreciate it. Thanks.
Hoping to get some help here. Got a 2010 SHO. What happened initially like a few weeks earlier was that my brother got a P0301 code which if I remember is s misfire somewhere. Then like 2 weeks later he noticed that the car would go nowhere or rev beyound 3K RPM's. So when I went to check it I pulled a P0420 code which is catalytic threshold below efficiency on Bank 1 and that usually means the cat or cats are bad. Although could also be oxygen sensors. Sure enough, pulled the cat out and it was destroyed. Replaced the cat. Told my brother to replace both o2 sensors to be on the safe side but they only had one so he's got a brand new primary but the old secondary is still on. So another code p0420 comes up after driving it for 20 or so miles. I mean there's something that destroyed the cat in the first place. But in 20 minutes? Is it possible? Unless it's running super rich or there's an ignition problem or whatever else. Now, for the folks that have experienced this type of thing, what is the common problems on this particular vehicle? I checked the coils and they fire fine as far as I can tell. If anyone has some insight I'd appreciate it. Thanks.
Not that it won't be quite an adventure but I'm so busy with my jobs that have no time to own this car now. But I did get a chance to drive it. If you take off very very slowly, you won't notice there's a problem. The second you go over about 15 to 20% throttle, the car just doesn't pick up. Kind of feels like when you are in a high gear on a stickshift and you smash the gas, the car will just not pickup. No codes stored yet since the catalytic replacement. Secondary 02 was replaced though he said. And I have the old plugs that he replaced after new cat was installed. They look good. If the pcv system was clogged I would see crap on plugs, but I'll still check it out.
