clogged cat
#27
You gonna eat that?
iTrader: (1)
#29
You gonna eat that?
iTrader: (1)
Did you get any CELs?
If the plug wasn't firing, it could have been dumping excess fuel in the cat.
If the plug wasn't firing, it could have been dumping excess fuel in the cat.
#31
Nope, no CELs. There is a slight hesitation around 4krpm too. I'm going for a long drive tomorrow so will double check the smoothness of acceleration. You reckon the CAT could be dying?
#32
You gonna eat that?
iTrader: (1)
If you can drop the cat and inspect it, it might be a good idea.
#33
Water Foul
Definitely inspect your catalyst. Dumping fuel and oil into it is a recipe for disaster, and if it starts to clog, it can start cooking your rear rotor.
#34
Thanks for the help BigCajun and Steve.
After the long drive, the car feels better now - now more surges and power is there throughout the rev range.
Could it still be the CAT?
I was feeling underneath my seat (right-hand drive), the carpet all feels quite warm, and touched this very hot screw/nut - is it normal for it to be hot? Or a bad sign?
Here's a picture of it - slight gold shimmer underneath the plastic:
<img src="https://lsabrw.bn1301.livefilestore.com/y3mhhZWbqkamv0qHqbXyzik9Rj-OWLNnwg1GgUArHbo4ygUOQ-JVymSCIUpXNJenJ_cwfQRaEse2JJppPLLFh598RjIu7tSgyCyX DV8fj2Wtk5LJb_XZXwf3NZtQfkzl3RBjJUM0vctUFrSXFffnej 9LTTS7jncZDIdiCL7GYKUXGY?width=660&height=372&crop mode=none" width="660" height="372" />
After the long drive, the car feels better now - now more surges and power is there throughout the rev range.
Could it still be the CAT?
I was feeling underneath my seat (right-hand drive), the carpet all feels quite warm, and touched this very hot screw/nut - is it normal for it to be hot? Or a bad sign?
Here's a picture of it - slight gold shimmer underneath the plastic:
<img src="https://lsabrw.bn1301.livefilestore.com/y3mhhZWbqkamv0qHqbXyzik9Rj-OWLNnwg1GgUArHbo4ygUOQ-JVymSCIUpXNJenJ_cwfQRaEse2JJppPLLFh598RjIu7tSgyCyX DV8fj2Wtk5LJb_XZXwf3NZtQfkzl3RBjJUM0vctUFrSXFffnej 9LTTS7jncZDIdiCL7GYKUXGY?width=660&height=372&crop mode=none" width="660" height="372" />
#35
Registered
When inspecting the cat, what should I be looking for? Just having a clear honeycomb, intact, not melty and unhappy, or what? If it's cracked or something, is it bad?
Never done cat work, going to take a look soon.
Does anyone have pics of good and bad, for comparison?
Never done cat work, going to take a look soon.
Does anyone have pics of good and bad, for comparison?
#38
Testing a cat should be done the proper way, a visual is not really the proper way.
P0420 How To Diagnose A Bad Catalytic Converter -EricTheCarGuy - YouTube
P0420 How To Diagnose A Bad Catalytic Converter -EricTheCarGuy - YouTube
#39
No respecter of malarkey
iTrader: (25)
this thread is also bad in many ways
if you suspect a clogged/broken cat element then a visual inspection is correct
if you have this cat code then you do this other method, but based on your other thread you don’t have this code.
again, 1 + 1 = 2
3 is an incorrect answer
.
if you suspect a clogged/broken cat element then a visual inspection is correct
if you have this cat code then you do this other method, but based on your other thread you don’t have this code.
again, 1 + 1 = 2
3 is an incorrect answer
.
#40
this thread is also bad in many ways
if you suspect a clogged/broken cat element then a visual inspection is correct
if you have this cat code then you do this other method, but based on your other thread you don’t have this code.
again, 1 + 1 = 2
3 is an incorrect answer
.
if you suspect a clogged/broken cat element then a visual inspection is correct
if you have this cat code then you do this other method, but based on your other thread you don’t have this code.
again, 1 + 1 = 2
3 is an incorrect answer
.
Edit: I also am very interested in swapping oem cat for BHR midpipe. So im on the fence about replacing the 02 sensor if im going to swap. Correct me if I'm wrong but the rear 02 sensor serves no purpose with midpipe.
Last edited by lzvzlm; 06-03-2020 at 07:23 AM.
#41
No respecter of malarkey
iTrader: (25)
if your vehicle needs to pass an emission test then it serves a purpose. If not, then you’re right, it serves no useful purpose.
that’s not a low end scan tool, but if that’s what you want to do then by all means do so
.
that’s not a low end scan tool, but if that’s what you want to do then by all means do so
.
Last edited by TeamRX8; 06-03-2020 at 08:19 AM.
#42
Correct, no emissions test required in my state. As always thanks for the advice.
#43
I just wanted to add my cat experience to the thread. My car was stumbling after 5k rpm with no codes. I changed the plugs and coils which helped but still not right. I decided to order a new aftermarket cat. When I removed the cat pieces fell out it was a mess. Installed new cat and the car screams all the way to redline.
moral of the story these cars cool cats. In my case it was likely old coils and plugs dumping fuel into the car. This was previous owner stuff.
engine has 90k on it.
moral of the story these cars cool cats. In my case it was likely old coils and plugs dumping fuel into the car. This was previous owner stuff.
engine has 90k on it.
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