Finally got around to it last weekend. Disassembly, cleaning and reassembly took about an hour. Did not have to do the relearn, and car definitely idles better now... I didn't get around to cleaning the MAF (forgot about it, even though I had the MAF cleaner too). At the same time, I wasn't sure I was up to messin' with MAF without instructions. I found a DIY thread on another forum, it should be helpful when I get around to it.

 

what piece is that? "Do not disconnect the harness connector!"

 

there is an electrical connection that is plugged into the throttle bodies to control the butterfly valve. Remove the TB without disconnecting that connection (or the small hoses for that matter)

 

I removed the entire TB, but reset ECU... Is that why it runs fine? It was rough for a bit after but a ok after that.

 

How much wiggle room is there to clean the throttle body if you leave the connections in place?

Are you guys masking off any areas when spraying the cleaner or are you just being careful not to get any on plastic and painted surfaces? Most of these cleaners, while safe for coated throttle bodies, will destory the finish on plastic and painted surfaces.

What is the issue with completely removing the TB, if you can do the learning procedures via the pedal method or if at a dealer with consult II?

From what I gathered you do NOT whatsoever want to spray the cleaner into the throttle body and have all the gunk enter the engine, it will coat your internals, cause compression to rise, etc.


I am debating what to do in my situation. I know my TB is likely dirty, I have idle surge, sometimes takes longer to start, and throttle response is poor. CAMP2 readouts do not always show 100% WOT when flooring it like it used to. Also, I will occassionaly get a slight vibration in the pedal area when just putting the car in first or reverse from neutral. The vibration onlu lasts a second or two and only happens occasionally. I'm not sure if this is related to the dirty TB.

My options are either to clean my current TB (~26k miles) or replace it with a new/remanufactured unit in case any of the sensors or parts are going bad, besides being dirty...

 

There's more than enough room for you to move the TB around, flip it, etc.

No need to mask any areas, spray the TB cleaner on a clean shop towel or something similar and just clean the TB and intake manifold side with the towel only. You do not want to spray the cleaner on the TB itself.

Because the idle relearn procedure can be a b!tch to get right and there's no need to disconnect anything any further when you got more than enough space already.

I'd suggest you at least try and clean it first. It's even easier for you DE guys since you only have one TB.

BTW, I think I once saw a how-to procedure for the DE on Youtube. Check it out.

 

Just an FYI, I cleaned my throttle bodies and did not disconnect anything. I got the dreaded high idle which is triggering the p0507 high idle code.

Have the dealer do it. Not worth the headache.

 

Performed the relearn procedure. Very tricky to do. Must be done to the T. Well, it fixed the code and idle is back to normal.

You will know when you successfully did the relearn as you will hear the idle motors adjusting the idle to normal.

 

Thanks for this DIY. I was getting the idle drop issue. My TB was in bad shape. I cleaned it up and no more idle drops. I disconnected the TB after I disconnected the battery. Do I still need to do the re-learn? I drove it around and haven't gotten any problems.

Thanks

 

Is your idle around 750-800 RPMS? If yes, you are good.

 

Idle around 7500-8000??? do u mean 750-800rpm??

 

Yes lol

 

I called a local Infinti dealership for my 30k service and they said that I would need a TB cleaning (runs around $150-170). I called another dealership who said that Infiniti or Nissan does not recommend TB cleaning. Who is correct?

 

Are you having any idle issues?

 

No, I don't have any idle issues.