Power cuts off around 6500 rpm (no cel)
#1
Rotary Power!
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Power cuts off around 6500 rpm (no cel)
So ive been doing some research since i dyno'd my car. Here are the results.
![Name: rx8dyno1.jpg
Views: 334
Size: 49.7 KB](https://www.rx8club.com/attachments/series-i-tech-garage-22/270311d1501521125-power-cuts-off-around-6500-rpm-no-cel-rx8dyno1.jpg)
The point were it start to dip is 6500rpm and thats were the APV should open to give the engine more air. My question to the community is there a way to check the APV motor? myself or should i just take it to the dealer and have them replace the whole thing. I have a 2004 currently sitting on 80k miles. Also ill mention that when i redline it i dont get a cel ( i do redline the car every time i drive it, not sure if the owner before me did). Any suggestion, thoughts, comments?
![Name: rx8dyno1.jpg
Views: 334
Size: 49.7 KB](https://www.rx8club.com/attachments/series-i-tech-garage-22/270311d1501521125-power-cuts-off-around-6500-rpm-no-cel-rx8dyno1.jpg)
The point were it start to dip is 6500rpm and thats were the APV should open to give the engine more air. My question to the community is there a way to check the APV motor? myself or should i just take it to the dealer and have them replace the whole thing. I have a 2004 currently sitting on 80k miles. Also ill mention that when i redline it i dont get a cel ( i do redline the car every time i drive it, not sure if the owner before me did). Any suggestion, thoughts, comments?
#2
Grasshopper
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This shows how to test the APV motor.
https://www.rx8club.com/series-i-do-yourself-forum-73/diy-troubleshoot-intake-valves-174009/
Not sure the APV stuck closed will give you that kind of result, but lets see what others have to say about it.
https://www.rx8club.com/series-i-do-yourself-forum-73/diy-troubleshoot-intake-valves-174009/
Not sure the APV stuck closed will give you that kind of result, but lets see what others have to say about it.
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update i tried to remove the APV motor from the intake from the right tire well but could not remove one of the bolts because there were 2 pipes in the way. So i just disconnected the APV and applied the 12V DC adapter and i heard the motor turn. I connected the APV back and i had my gf put the car in the on position for a couple of seconds then turned it off and i heard the car testing the APV motor from the right tire well. I drove the car up to 9k rpm and i noticed that the engine sounded louder and did struggle to reach 6.5k to 9k rpm. Next weekend we have a Dyno day coming so we will see if the issue was resolved. Jon thanks for the help.
#9
Dammit Jim, I'm a doctor.
update i tried to remove the APV motor from the intake from the right tire well but could not remove one of the bolts because there were 2 pipes in the way. So i just disconnected the APV and applied the 12V DC adapter and i heard the motor turn. I connected the APV back and i had my gf put the car in the on position for a couple of seconds then turned it off and i heard the car testing the APV motor from the right tire well. I drove the car up to 9k rpm and i noticed that the engine sounded louder and did struggle to reach 6.5k to 9k rpm. Next weekend we have a Dyno day coming so we will see if the issue was resolved. Jon thanks for the help.
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