CEL and misfire at wot
#26
I'm hoping you guys can help me out,
I have a 2004 Mazda RX8 that is showing symptoms of a clogged catalytic converter. I've been reading lots of posts where you guys mention; uneven idle, shaking, misfires at high rpm are all symptoms of clogged cat. My question is; is there a way to unclog it or do I have to install a new cat?
I'm also planning on replacing ignition coils in case they were damaged.
Any tips are appreciated, thanks in advance!
I have a 2004 Mazda RX8 that is showing symptoms of a clogged catalytic converter. I've been reading lots of posts where you guys mention; uneven idle, shaking, misfires at high rpm are all symptoms of clogged cat. My question is; is there a way to unclog it or do I have to install a new cat?
I'm also planning on replacing ignition coils in case they were damaged.
Any tips are appreciated, thanks in advance!
I'd recommend replacing coils and plugs and also just take the cat off for a while and see if that solves the issue.
#28
You gonna eat that?
iTrader: (1)
I'm hoping you guys can help me out,
I have a 2004 Mazda RX8 that is showing symptoms of a clogged catalytic converter. I've been reading lots of posts where you guys mention; uneven idle, shaking, misfires at high rpm are all symptoms of clogged cat. My question is; is there a way to unclog it or do I have to install a new cat?
I'm also planning on replacing ignition coils in case they were damaged.
Any tips are appreciated, thanks in advance!
I have a 2004 Mazda RX8 that is showing symptoms of a clogged catalytic converter. I've been reading lots of posts where you guys mention; uneven idle, shaking, misfires at high rpm are all symptoms of clogged cat. My question is; is there a way to unclog it or do I have to install a new cat?
I'm also planning on replacing ignition coils in case they were damaged.
Any tips are appreciated, thanks in advance!
A bad cat will give you a P0420 code.
Be sure your cat is bad before you gut it.
New ones are close to $2k.
If you have an Android phone or tablet, you can get the Torque app and a Bluetooth dongle to monitor your OBD, and scan & clear your CELs, which will pop up if you go catless.
#29
What am I doing here?
Join Date: Mar 2006
Location: 2017 Miata RF Launch Edition
Posts: 3,606
Received 649 Likes
on
510 Posts
It should be noted that it's US federal law that you can't tamper with a catalytic converter. This is why all car manufacturers are required to provide an 8 year/80k mile warranty on cats.
The fact that so many people get away with not having a working cat is because not every state checks.
The fact that so many people get away with not having a working cat is because not every state checks.
#30
You can get the OBD scanned for free at most parts stores.
A bad cat will give you a P0420 code.
Be sure your cat is bad before you gut it.
New ones are close to $2k.
If you have an Android phone or tablet, you can get the Torque app and a Bluetooth dongle to monitor your OBD, and scan & clear your CELs, which will pop up if you go catless.
A bad cat will give you a P0420 code.
Be sure your cat is bad before you gut it.
New ones are close to $2k.
If you have an Android phone or tablet, you can get the Torque app and a Bluetooth dongle to monitor your OBD, and scan & clear your CELs, which will pop up if you go catless.
Where are you getting this number from? I'm assuming used ones are cheaper
How likely am I to be stopped for not having a cat. What I mean is, it it pretty evident from smoke/noise if I take it off?
#31
Smoking turbo yay
More like US$1k+. That's what Mazmart sells them at.
Used ones could be cheap but make sure they are good.
Fix your problems before installing a new cat, or watch it die just as soon.
Another solution is a Magnaflow unit. You can put it on, do the inspection and take it back off. I wouldn't drive around in it, though.
A normal decatted 8, other than the smell, shouldn't emit any smoke. It will pop flames occasionally under full throttle, though, and that's a dead giveaway that you don't have a cat.
Used ones could be cheap but make sure they are good.
Fix your problems before installing a new cat, or watch it die just as soon.
Another solution is a Magnaflow unit. You can put it on, do the inspection and take it back off. I wouldn't drive around in it, though.
A normal decatted 8, other than the smell, shouldn't emit any smoke. It will pop flames occasionally under full throttle, though, and that's a dead giveaway that you don't have a cat.
#33
More like US$1k+. That's what Mazmart sells them at.
Used ones could be cheap but make sure they are good.
Fix your problems before installing a new cat, or watch it die just as soon.
Another solution is a Magnaflow unit. You can put it on, do the inspection and take it back off. I wouldn't drive around in it, though.
A normal decatted 8, other than the smell, shouldn't emit any smoke. It will pop flames occasionally under full throttle, though, and that's a dead giveaway that you don't have a cat.
Used ones could be cheap but make sure they are good.
Fix your problems before installing a new cat, or watch it die just as soon.
Another solution is a Magnaflow unit. You can put it on, do the inspection and take it back off. I wouldn't drive around in it, though.
A normal decatted 8, other than the smell, shouldn't emit any smoke. It will pop flames occasionally under full throttle, though, and that's a dead giveaway that you don't have a cat.
#34
weeeeeeeeee
iTrader: (12)
Without a custom ECU map it is going to throw a code and illuminate your CEL. In most states, the mere presence of an active CEL is a fail. With the codes suppressed via ECU map most states allow one readiness test to fail so as long as nothing else is wrong you should be okay.
If your smog test involves a dyno and sniffer you will fail, period.
If your smog test involves a dyno and sniffer you will fail, period.
Thread
Thread Starter
Forum
Replies
Last Post
djfa
Series I Trouble Shooting
11
09-01-2013 12:57 PM
Nopstnz8
Series I Trouble Shooting
31
06-26-2013 11:52 AM