Throwing codes after TB cleaning
#1
Registered User
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Throwing codes after TB cleaning
Wats up RX8Club I read some posts about some ppl cleaning their throttle bodies, so I figured Id do it too. So I took off the TB, and cleaned it. First I took a brillo pad to it to clean up some of the grime that was gunked up on the outside. Then I took some TB cleaner and sprayed the living days out of the thing and scuffed it more. It looks awesome but when the car is running the idle is at 1000-1200 RPM. I scanned the ecu and besides the usual o2 sensors coming up, i got code P0507(Idle Air Control System RPM higher than expected) I checked for vacuum leaks but nothings leaking. Everything was hooked up correctly. I even took everything apart and did it again. Anybody know what it could be? PLease any ideas are welcome.
#2
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Any ideas? I searched the code on the forums and a few threads come up but nothing definite. I checked for vacuum leaks, checked the little hose behind the intake and i cleaned my MAF. Anything else I should be looking for?
#4
Registered User
Thread Starter
::EDIT:: My idle has dropped a bit. Its sitting at 1000 RPM flat.
#5
A P0507 DTC trouble code may be caused by one or more of the following:
A vacuum leak
Leaking air intake after the throttle body
EGR valve leaking vacuum
A faulty positive crankcase ventilation (PCV) valve
Damaged/failed/dirty throttle body
Failed EVAP system
Failed IAC (idle air controller) or faulty IAC circuit
A vacuum leak
Leaking air intake after the throttle body
EGR valve leaking vacuum
A faulty positive crankcase ventilation (PCV) valve
Damaged/failed/dirty throttle body
Failed EVAP system
Failed IAC (idle air controller) or faulty IAC circuit
#7
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Thread Starter
yea im getting clamps tomorrow just to make sure i have no leaks. also im gonna throw some soapy water on my lines to make sure theres no pin holes. Ummmm it cant be my TB cuz i just cleaned it flawlessly. Ummmm wheres my IAC sensor and EGR? I know what they are but idk where they r on the motor
#9
no agenda
iTrader: (2)
It's entirely possible that u have damaged the TB plate stepper motor.
Or knocked it out of whack some.
I know of no way to fix that.
Turning the car to the on position but not running you should be able to see the TB position when the pedal position is off and WOT. See if evrything looks ok.
Its an easy check, at least something to remove as a problem.
Or knocked it out of whack some.
I know of no way to fix that.
Turning the car to the on position but not running you should be able to see the TB position when the pedal position is off and WOT. See if evrything looks ok.
Its an easy check, at least something to remove as a problem.
Last edited by wcs; 09-21-2011 at 08:48 PM.
#10
Registered User
Thread Starter
It's entirely possible that u have damaged the TB plate stepper motor.
Or knocked it out of whack some.
I know of no way to fix that.
Turning the car to the on position but not running you should be able to see the TB position when the pedal position is off and WOT. See if evrything looks ok.
Its an easy check, at least something to remove as a problem.
Or knocked it out of whack some.
I know of no way to fix that.
Turning the car to the on position but not running you should be able to see the TB position when the pedal position is off and WOT. See if evrything looks ok.
Its an easy check, at least something to remove as a problem.
#11
Metatron
iTrader: (1)
I'm a nice guy, I searched for you.
....but you won't like the answer -
thread - https://www.rx8club.com/series-i-tech-garage-22/throttle-body-220223/#post4038405
see post #5 by Mazda Maniac.......
You're welcome.
....but you won't like the answer -
thread - https://www.rx8club.com/series-i-tech-garage-22/throttle-body-220223/#post4038405
see post #5 by Mazda Maniac.......
You're welcome.
#12
Registered
iTrader: (25)
I'm a nice guy, I searched for you.
....but you won't like the answer -
thread - https://www.rx8club.com/showthread.php?p=4038405
see post #5 by Mazda Maniac.......
You're welcome.
....but you won't like the answer -
thread - https://www.rx8club.com/showthread.php?p=4038405
see post #5 by Mazda Maniac.......
You're welcome.
#13
Registered User
Thread Starter
^^^ But if my TB isnt fully closing then wouldnt my idle be high? There was a black "gunk" around the plate on the bore of the TB so i did "clean" it out. My main question is, does the TB completely close on it own, or is there still some room where u can push it closed?
#14
Registered
iTrader: (2)
The throttle body never fully shuts at idle. If it did (when idling) it would kill the engine. Due to no air. Kinda like a choke.
Now if you messed up the throttle position motor alignment, maybe you would have a high idle issue. Pushing the butterfly fully shut could have misaligned it. And thinking it's in it's programed location at idle, instead, may be open a bit more than prior. Causing high idle.
All in theory.
I'd check for vacuum leaks. I know you said that you did. But.
Did you do anything with the MAF? Clean it? Remove it?
Now if you messed up the throttle position motor alignment, maybe you would have a high idle issue. Pushing the butterfly fully shut could have misaligned it. And thinking it's in it's programed location at idle, instead, may be open a bit more than prior. Causing high idle.
All in theory.
I'd check for vacuum leaks. I know you said that you did. But.
Did you do anything with the MAF? Clean it? Remove it?
#15
Registered User
Thread Starter
The throttle body never fully shuts at idle. If it did (when idling) it would kill the engine. Due to no air. Kinda like a choke.
Now if you messed up the throttle position motor alignment, maybe you would have a high idle issue. Pushing the butterfly fully shut could have misaligned it. And thinking it's in it's programed location at idle, instead, may be open a bit more than prior. Causing high idle.
All in theory.
I'd check for vacuum leaks. I know you said that you did. But.
Did you do anything with the MAF? Clean it? Remove it?
Now if you messed up the throttle position motor alignment, maybe you would have a high idle issue. Pushing the butterfly fully shut could have misaligned it. And thinking it's in it's programed location at idle, instead, may be open a bit more than prior. Causing high idle.
All in theory.
I'd check for vacuum leaks. I know you said that you did. But.
Did you do anything with the MAF? Clean it? Remove it?
#16
Modulated Moderator
iTrader: (3)
Do you have a buddy locally that has an RX-8? Has a code reader or Accessport?
If you do swap the TB's and see if it fixes the problem....
If it does you can get a used one easily......if it doesn't you can look somewhere else
If it doesn't get back to us with some data...LT and STFT's and MAF readings would be a help
If you do swap the TB's and see if it fixes the problem....
If it does you can get a used one easily......if it doesn't you can look somewhere else
If it doesn't get back to us with some data...LT and STFT's and MAF readings would be a help
#18
Metatron
iTrader: (1)
Contrary to Teams input, if you 'clean' all the soft rubber from the throttle blade seat, air will be rushing in at all times, making a low controllable idle impossible.
You be needin a new TB......
You be needin a new TB......
#20
no agenda
iTrader: (2)
Second .... all you have to do is just the basic amount of searching to figure this out you lazy douche.
Third .... you're a cheap son-of-a-b@#$% go buy one
I will however give you credit for not starting a new thread on the topic.
--- maybe I will ---- I've had it with this place
Last edited by wcs; 09-24-2011 at 09:21 AM.
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