throttle body missing a part - Toyota Yaris Forums

bebeelo · 06-06-2014, 03:14 PM

okay so I just bought a 1zz throttle body online and I just received it today. but its missing the part(idk what its called, probably like a coolant hose port). the picture that I attached is not the actual tb that I have but shows two of them. Im missing the short one that is pointing straight up. is this fixable?

CTScott · 06-06-2014, 03:51 PM

You can just bypass it (take the two hoses that connect to the TB and just connect them to each other). The only purpose of the coolant connections to the throttle body are to heat the intake air, to improve fuel economy when the engine is cold.

bebeelo · 06-06-2014, 04:35 PM

How can i connect them together? So even though its missing one of the tb coolant hose will there be any gaurantee that it may not function correctly?

mazilla · 06-06-2014, 04:42 PM

Kinda lame that you got a broken(?) part but otherwise no it will not harm anything to bypass. I bypassed mine for a couple of years before finally hooking it back up since I happened to be messing with it.

bebeelo · 06-06-2014, 05:16 PM

Yeah actually i bought a 1zz tb, which i thought it was in good condition but arrived in the condition i explained from the first post. Btw How do you connect the two hose together to bypass it? I cant get a good picture of how to do it. Btw is it also normal to have the 1zz tb not close all the way? Theres a very tiny gap.

CrankyOldMan · 06-06-2014, 07:23 PM

Yes, the valve should not close all the way. If it did, your engine would stall every time you took your foot off the gas pedal.

The bypass is on the hose itself, not the throttle body--connect the hose ends to each other, not to the TB.

tooter · 06-06-2014, 09:28 PM

Quote:

Originally Posted by bebeelo

How can i connect them together? So even though its missing one of the tb coolant hose will there be any gaurantee that it may not function correctly?

You'll be just fine.

Our Yaris has been running that way for months.
I just used a small scrap of aluminum tubing to couple the two coolant hoses together.

Rigaud · 06-06-2014, 10:39 PM

I didn't connect the two hoses. Even simpler and cleaner I removed one hose and only used one to loop back.

The 1ZZ I found online was rebuilt as new, sand blasted and clear coated. Got it for $68

bebeelo · 06-07-2014, 03:48 AM

it all makes sense now. thanks so much guys!!!

06-06-2014, 03:51 PM	#2
CTScott ULTIMATE View User's Garage Drives: 09 5dr LB, 2x 08 3dr LB Join Date: Oct 2008 Location: USA, CT Posts: 13,460	You can just bypass it (take the two hoses that connect to the TB and just connect them to each other). The only purpose of the coolant connections to the throttle body are to heat the intake air, to improve fuel economy when the engine is cold. __________________

06-06-2014, 04:35 PM	#3
bebeelo ThatYarisGuy View User's Garage Drives: Toyota Yaris 2012 SE Join Date: Oct 2012 Location: Stockton, CA Posts: 126	How can i connect them together? So even though its missing one of the tb coolant hose will there be any gaurantee that it may not function correctly? __________________

06-06-2014, 04:42 PM	#4
mazilla advocatus diaboli Drives: 07 Yaris hatch Join Date: Mar 2011 Location: San Jacinto California Posts: 1,126	Kinda lame that you got a broken(?) part but otherwise no it will not harm anything to bypass. I bypassed mine for a couple of years before finally hooking it back up since I happened to be messing with it. __________________ -Type 07 FFL- My odometer 03/11 http://i205.photobucket.com/albums/b...a/2843ed85.jpg

06-06-2014, 05:16 PM	#5
bebeelo ThatYarisGuy View User's Garage Drives: Toyota Yaris 2012 SE Join Date: Oct 2012 Location: Stockton, CA Posts: 126	Yeah actually i bought a 1zz tb, which i thought it was in good condition but arrived in the condition i explained from the first post. Btw How do you connect the two hose together to bypass it? I cant get a good picture of how to do it. Btw is it also normal to have the 1zz tb not close all the way? Theres a very tiny gap. __________________

06-06-2014, 10:39 PM	#8
Rigaud Drives: 2009 Yaris Join Date: Jan 2014 Location: Rigaud, Quebec, Can. Posts: 357	I didn't connect the two hoses. Even simpler and cleaner I removed one hose and only used one to loop back. The 1ZZ I found online was rebuilt as new, sand blasted and clear coated. Got it for $68 __________________ 2009 Toyota Yaris (Little toy) 2002 Audi A4 Avant Quattro 3.0L (Big boy toy) 1998 Subaru Legacy GT 2.5 (winter & DD)

06-06-2014, 07:23 PM	#6
CrankyOldMan 2ZR swap. DO IT! Ask how! View User's Garage Drives: 09 Meteoric Metallic HB Join Date: Feb 2011 Location: West Michigan Posts: 2,333	Yes, the valve should not close all the way. If it did, your engine would stall every time you took your foot off the gas pedal. The bypass is on the hose itself, not the throttle body--connect the hose ends to each other, not to the TB.

06-07-2014, 03:48 AM	#9
bebeelo ThatYarisGuy View User's Garage Drives: Toyota Yaris 2012 SE Join Date: Oct 2012 Location: Stockton, CA Posts: 126	it all makes sense now. thanks so much guys!!! __________________

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
TPS reading at WOT with 1ZZ throttle body?	4/20 NEVER FORGET	Performance Modifications	14	07-02-2023 04:20 AM
1zz Throttle body review/tips	Black_griffin6	Performance Modifications	154	11-18-2021 03:35 PM
Throttle Body Cleaning?	shangapol	DIY / Maintenance / Service	14	08-04-2017 02:09 AM
Carbon build up in the throttle body	Sedan	DIY / Maintenance / Service	18	11-15-2013 11:44 PM
Throttle Body Swap questions...	Stove	Performance Modifications	0	06-27-2010 03:31 AM