2009 RX8 R3 (P0300,P0410,P0411) huge power loss solution
#1
White RX8 R3
Thread Starter
2009 RX8 R3 (P0300,P0410,P0411) huge power loss solution
Hello Everyone, This thread is only to help someone else with the same problem I had recently.
I own an 2009 RX8 R3 with 69000km (43000 miles) on it. A month ago I began to have some power loss at around 7000 rpm with no check engine and during the month, the power continued to degrade to a point that I was unable to go more that 5000 rpm and difficulty to drive the car at all. At that point I begun to receive check engine with P0411,P0410 and some misfire P0300.
I read/search every single thread here and went to a debug mode.
1- I changed the spark plugs with wires = didn't work !
2- I changed the coils with the D585 coils and 10mm cables = still no change![Sweatdrop](https://www.rx8club.com/images/smilies/sweatdrop.gif)
3 - With all the reading I begun to suspect the catalytic converter...
4- I removed the catalytic converter and heard rattle noise from it when I rotate it...Confirm the CAT was in pieces but in the middle of it. All that time I never received the P0421 saying my CAT was bad....
Fortunately my CAT was still on the 8 years or 128 000 km (80 000miles) warranty and will be replaced by Mazda at no cost.
I just want to thank all of you that took the time to put all the info in this forum that helped me resolved this frustrating problem.
Frank
I own an 2009 RX8 R3 with 69000km (43000 miles) on it. A month ago I began to have some power loss at around 7000 rpm with no check engine and during the month, the power continued to degrade to a point that I was unable to go more that 5000 rpm and difficulty to drive the car at all. At that point I begun to receive check engine with P0411,P0410 and some misfire P0300.
I read/search every single thread here and went to a debug mode.
1- I changed the spark plugs with wires = didn't work !
2- I changed the coils with the D585 coils and 10mm cables = still no change
![Sweatdrop](https://www.rx8club.com/images/smilies/sweatdrop.gif)
3 - With all the reading I begun to suspect the catalytic converter...
4- I removed the catalytic converter and heard rattle noise from it when I rotate it...Confirm the CAT was in pieces but in the middle of it. All that time I never received the P0421 saying my CAT was bad....
Fortunately my CAT was still on the 8 years or 128 000 km (80 000miles) warranty and will be replaced by Mazda at no cost.
I just want to thank all of you that took the time to put all the info in this forum that helped me resolved this frustrating problem.
Frank
![Peace](https://www.rx8club.com/images/smilies/Peace.gif)
Last edited by rx8frank; 07-12-2017 at 12:24 PM.
#2
///// Upscale Zoom-Zoom
What did the dealer need to confirm your cat was bad? Inspection alone?