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Joined: Aug 2004
Posts: 138
Member
2000 Toyota Celica
Member
2000 Toyota Celica
Joined: Aug 2004
Posts: 138
Ok, this is a majorly dumb question, but what is that black plastic tube that runs from the ecu box (the box that says DO NOT OPEN in flamboyantly large letters) to down underneath the radiator? What's it called and what does it do? I took it out to put on my CAI... will this hurt it?

Joined: Jan 2005
Posts: 278
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2003 Toyota Celica GT
Member
2003 Toyota Celica GT
Joined: Jan 2005
Posts: 278
yeah your gonna die, that deverts all the toxic gas from your enine outside..now its all coming inside your car...































yeah im just bs'in..i have no clue...

Joined: Feb 2005
Posts: 367
Member
2003 Toyota Celica
Member
2003 Toyota Celica
Joined: Feb 2005
Posts: 367
Originally Posted by Kenton2k
Ok, this is a majorly dumb question, but what is that black plastic tube that runs from the ecu box (the box that says DO NOT OPEN in flamboyantly large letters) to down underneath the radiator? What's it called and what does it do? I took it out to put on my CAI... will this hurt it?
Hmm I have no clue...I guess as long as you DO NOT OPEN it, it won't do any harm LOL. Have you tried calling your local Toyota dealership?

Joined: Feb 2004
Posts: 1,716
Specialist
2000 Toyota Celica
Specialist
2000 Toyota Celica
Joined: Feb 2004
Posts: 1,716
that tube is there to keep ur ecu cool..i think..i read it somewhere about it..but it don't hurt nothing if you remove the tube..just don't remove the ecu cap..leave that alone..i'm running with half of that tube, just the top portion is hooked onto the ecu box, the bottom portion that hook to the radiator is in my room, in the closet..

Joined: Aug 2004
Posts: 138
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2000 Toyota Celica
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2000 Toyota Celica
Joined: Aug 2004
Posts: 138
hahah why did you take yours out? CAI install?

Joined: Oct 2003
Posts: 1,864
Likes: 1
Specialist
2002 Toyota Celica
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2002 Toyota Celica
Joined: Oct 2003
Posts: 1,864
Likes: 1
thats there to cool the ecu.
the ECU is just like a computer, it will heat up if its on. now that you took that off, the hot air from the engine bay is gonna enter through the hole instead of the cool air that the pipe is faced down for.
its up to you though if you wanna let hot air go there or not.

Joined: Aug 2004
Posts: 138
Member
2000 Toyota Celica
Member
2000 Toyota Celica
Joined: Aug 2004
Posts: 138
Where does that long tube connect to underneath the radiator? Does it hook into a place that lets cool air flow up into the ecu box?

Joined: Feb 2003
Posts: 916
Senior Member
2003 Toyota Celica GT
Senior Member
2003 Toyota Celica GT
Joined: Feb 2003
Posts: 916
Yeah at the bottom of the radiator mount, (the plastic part) there is a hole that the bottom of the tube snaps in to.

Last edited by robare99; Mar 18, 2005 10:22am.

Joined: May 2004
Posts: 2,971
Boobie Vision
2000 Toyota Celica
Boobie Vision
2000 Toyota Celica
Joined: May 2004
Posts: 2,971
yeah if you keep it off. And your ECU will heat up and may throw a CEL at you (Check Engine Light) You may want to consider putting that black tube back on.

Joined: Nov 2004
Posts: 304
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2002 Volkswagon Jetta GLS
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2002 Volkswagon Jetta GLS
Joined: Nov 2004
Posts: 304
hot ECU = slower performance = CEL and the car may even shut it self off because the computer is trying to protect it self

Joined: Feb 2003
Posts: 1,304
Specialist
2002 Toyota Celica GT
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2002 Toyota Celica GT
Joined: Feb 2003
Posts: 1,304
Doubt you will have a problem. I have run without it for 2 years. Countless people said they hadnt had theirs on for a while and no problems.


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