High idle after throttle body cleaning

3.4 V6 85,400 miles

Cleaned my throttle body today along with spark plug change. Before I performed this maintenance truck seemed to running fine, with warmed up idle around 750-800rpms. Performed said maintenance and cold, will idle 2000 rpm's, settling down to 1100 rpm when warm.

I did do a thorough job of cleaning the TB; I took it off completely and cleaned both sides of butterfly flap. Thoughts?

 

I had the same problem, make sure the butterfly valve is closing all the way, truck was fine after I took it off and flapped it a couple times and wiped it again

 

Thanks I'll try that

 

Mine idled high right after I did it, but it settled down after a couple days.

 

Unplug batery, make a sandvitch, take a shit,shower and shave , and the hook battery back up. It supposedly allows a "ECU Reset" that forces a recalibration of the MAF and deletes old data that causes algorithm update hysteresis.

 

This^ X2.

 

Reset the battery and give it a few days for the computer to re-learn the change. It will be fine.

 

im gunna clean mine now =] easy stuff?

 

yes. I would recommend taking the TB completely off so you can thoroughly clean both sides.

Update, I unplugged battery for 30 minutes, and after one trip to walmart my idle was fine again. Thanks guys.

 

nice, ill get on mine now.

 

Mine went away after a couple of days and now runs like a HOT BITCH! Response is unreal!

 

im so pumped to do mine! is it just the 4 bolts holding it on? and all the little attachments? cuz im about to do it right now.

 

yep

 

I know that this is an old thread, but I like to use the search.

I just cleaned out the throttle body on my 2000 2.7l and now I am getting high idle RPMs. Will unhooking the battery like mentioned work for this truck as well, or this specific to the 3.4l.

When I cleaned out the TB, I did remove it as well as the IAC to prevent junk from getting in there.

Dallas

 

I'm from Fort Worth TX, I cleaned my TB on my 97 4Runner today. Everything turned out great.

 

Hello, bringing up an old thread but need help. 04 Tacoma 2.7L, cleaned throttle body and changed gasket now has a high idle. I unplugged battery like stated above and it's also been a few days already and still has not gotten better. Any help please.

 

Did you make sure the butterfly valve is closing all the way at idle?

 

how can I check if it's closed all the way? when u rev it up the RPM will stay at 1500~
seems like the throttle body doesn't return to the lowest point it can, therefore if I manually twist it the RPM will settle back to normal. buy i don't want to be doing that everytime, if you understand?

 

Hmmm, the post up top said to tap it a few times or open and close it manually to see if it's just a little stiff towards the closed position and it starts to shut all the way.

@mechanicjon