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DIY: Clean your throttle bodies

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Old Feb 25, 2012 | 12:10 PM
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From: GTA
Originally Posted by SuperTrooper699
I'm gonna take the pcv prob get a longer hose and run it out under the car to stop some of this gunk
Can you elaborate on this... what you're planning to do and what it will accomplish?
 
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Old Feb 25, 2012 | 12:21 PM
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Has anyone done this i'm thinking about tryin it!
http://my350z.com/forum/engine-drive...catch-can.html
 
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Old Feb 25, 2012 | 12:24 PM
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well the valve is nothing but engine deposits blowing right back into your intake so, figured i was just plug the intake where the valve connects and run the pcv valve down and out somewhere since its all gunk and oil spitting out of it anyways. then i saw on my350z people making a homemade catch can for under 20$ i might do that instead.
 
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Old Feb 25, 2012 | 12:35 PM
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you wanted to disconnect the pcv and just let it run open under the engine? you ever heard of a vacuum leak?
 
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Old Feb 25, 2012 | 02:28 PM
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Yeah, uh, go the catch can route, the air in the system have already been metered, you need it to go back in again
 
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Old Feb 25, 2012 | 04:07 PM
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Originally Posted by moonsh0t
My 2005 G35 Sedan (117k miles) had been idling a bit high (~800-900 RPM warm idle) and spitting the P0507 code for the past few months.

This past weekend I cleaned the throttle body, reoiled the pop charger, and changed the oil/oil filter. For the next two days my car was driving ANGRY. In drive/reverse it would warm idle at about 1000 RPM, in park or neutral I was lucky to get it under 1400 RPM.

After driving into work today to warm it up, I tried the throttle body relearn procedure. Started it up after successfully completing the relearn, and it's now warm idling in park at about 600 RPM. I'll be watching it closely for the new few days, but am hoping that I fixed the problem.

Just wanted to say thanks for all the troubleshooting that everyone had contributed to this thread. It definitely helped a lot.
i just cleaned my throttle body yesterday lowered my rpms alot. then today my engine light comes on and throw the code p1574 which isn't in my g35 code book. what is this relearn procedure you speak of? I just erased my code and restarted the car for now.
 
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Old Feb 25, 2012 | 04:11 PM
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also when i start it, the rpms shoot up more than normal, then goes down to about 1000 then bounces a few times like i'm tapping the gas then just goes down to 800 and chills there. did you have this issue at all?
 
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Old Feb 25, 2012 | 04:39 PM
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Sounds like you need to perform the throttle pedal position relearn and the idle relearn.

You should be able to find these with a quick search, i don't have them to hand right now.
 
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Old Feb 25, 2012 | 05:32 PM
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Originally Posted by SuperTrooper699
also when i start it, the rpms shoot up more than normal, then goes down to about 1000 then bounces a few times like i'm tapping the gas then just goes down to 800 and chills there. did you have this issue at all?
that actually sounds perfectly normal
 
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Old Feb 25, 2012 | 05:34 PM
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Originally Posted by SuperTrooper699
i just cleaned my throttle body yesterday lowered my rpms alot. then today my engine light comes on and throw the code p1574 which isn't in my g35 code book. what is this relearn procedure you speak of? I just erased my code and restarted the car for now.
http://infinitihelp.com/diy/obd_codes/p1574_nissan.html

Sounds unrelated
 
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Old Feb 25, 2012 | 05:36 PM
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It shouldn't bounce....

Bouncing means going up *and* down. Is this what you meant, supertrooper?
 
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Old Feb 25, 2012 | 06:00 PM
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yeah it bounces like 4 times then it goes down to 800 and holds there at idle. And when i start it, it revs a bit hire than normal like the initial start.
 
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Old Feb 25, 2012 | 06:38 PM
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If the engine is not up to running temperature, it will rev higher than normal idle, this is normal.

It should never bounce, so i'd say you need to use the re-learn procedures.
 
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Old Feb 25, 2012 | 09:00 PM
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and what is this re learn procedure? Is it this? http://www.6mt.net/forum/performance...rocedures.html
 
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Old Feb 25, 2012 | 09:01 PM
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i erased the codes with my code reader and disconnected the battery restarted the car. i have drove it like 20 miles now everything is acting fine and no more codes have popped up.
 
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