JTso

iTrader: (2)

Let's put it this way, the coolant in the line doesn't get warm when you first start the engine, especially during winter. By the time it gets warm, the underhood temp is probably already over 32F, which is above freezing temp. Remember, the throttle plate is driven by a motor and the return spring is very strong.

xizor

Probably doesn't get as cold here at OH, but I had no problems w/ sticking in the year since I've done this mod. And jtso is right about the spring pressure, it takes a good deal of force to hold the throttle open.

MrHeeltoe

iTrader: (1)

I think more of a problem would arise if there was moisture or condensation present....in some climates or situations, water forming in the intake tractcould freeze the plate closed...that is the only thing I could see making a heated throttle body necessary....


Hmmm, why don't I check my handy dandy 2004-2005 Acura TSX Service Manual as I have it sitting right next to me.....

**flip flip rustle pages**

I don't see anything in there about any importance to the coolant lines at all...there is no mention of a sensor or anything. Those are just bypass lines that appear to be just what JTso says...heater lines for the tb.


Of note, there is an idle learning procedure you are supposed to do after replacing or cleaning a throttle body...

1) turn off all electrical devices in car
2) reset PCM/ECM (says to use HDS, but I don't think any of us have that..I think diconnecting the battery might be good good enough...)
3) turn ignition on and wait 2 sec
4) start engine and let warm up until coolant fans come on (hold at 3000 rpm in park or neutral to make it warm faster)
5) Let engine idel for 5 min with throttle body closed

EuroR_SG

I can't find the other coolant tubing. Saw the one just below the opening. but the other one?

moda_way

I tend to agree with you, so I'm thinking of leaving it unhooked for winter. Only time will tell. As always, your input is valuable.

curls

Here's a question to ponder:

Let's assume it gets pretty cold where I am (say 0*F on occasion). If I were to do this mod, some might say that I'd be crazy if I didn't hook the lines back up for winter, to warm the throttle body.

But, here's my point / question: OK, I've driven home from work, the engine is warm, la-dee-da. I park the car for the night. Hence, coolant isn't flowing, and is getting cold. Car is parked overnight in very cold temps. When I come to my car in the morning, REGARDLESS of whether I did this mod or not, the TB is going to be very, very cold. Since the TB heater lines aren't working when the car is off, and I know for a fact that the coolant gets damn cold overnight as the car wasn't driven, I would tend to think this mod would NOT AFFECT cold-temperature starting. Also, by the time the coolant has heated up enough to make a difference in the morning (say 5 minutes of idle or driving), I'm obviously already driving and the TB isn't stuck closed.

Does this logic make sense, and would this say to me that doing this mod will NOT affect winter driving at all?

Cheers,
~Eric

curls

Oh, the only way I think re-hooking-up the lines in winter would be beneficial is if you had a block heater installed, as it slightly warms the coolant and oil, thus keeping the TB slightly warmer than without it.

gsclifton

iTrader: (2)

I bought the parts for this yesterday. All I could find was a plastic part labeled Vacuum Fitting in a "T" shape rather than an elbow shaped piece. Will this plastic work with the hot coolant? I was just going to cap off part of the "T"

JTso

iTrader: (2)

What do you use to cap off the T? I hope it's not the vacuum plug, as the cooling system does have small amount of pressure.

Tsx536

I just picked up the Vacuum Caps today. Here's info on the parts I got.

I got the 5/16" Hose Mender / Hose Barb from Ace Hardware. I got the 5/16" Vacuum Caps made by Vacu-Tite from Autozone. Both items cost less than $2 each.

JTso

iTrader: (2)

Those are the same caps I used to cap off the TB.

moda_way

Same here.

Tsx536

^^ That's great guys. They fit perfectly.

I just finished the TB Coolant Bypass mod!!
It wasn't too bad at all. The coolant hose towards the bottom of the throttle body was actually pretty hard for me to get off. There is not too much clearance around that area. Other than that, the install wasn't too bad at all!

Where did you guys clamp the hoses? Closer to the throttle body or towards the middle of the line?

I tried to get the vise grips clamped onto the hose as close as I could to the throttle body, but the vise grips got in the way a little as I was trying to get the coolant hose off. I eventually got it off, but it made me wonder if I should have did something differently.

LB-TSX

just did the tb bypass, as well as the hondata gasket and also installed a k&n typhoon. a big thanks to jtso, your instructions on the tb bypass and the gasket helped tons.

Zasker1

Mod complete, I now have .0004% more hp for $2.

sauceman

GIBSON6594

only cost me $1 it all about hp/dollar

Zasker1

I bought a Brass fitting as I wanted to buy the best ~

etarui

iTrader: (2)

I am planning on doing this mod, but had a quick question. I was wondering if anyone has done this with a 2006 TSX. I believe the throttle body has been revised. I examined JTso's pictures, and mine looks a little different.

JTso's Image:


My Image:


It looks as though both hoses are now located next to each other. Can anyone please confirm?

moda_way

Yes, I was looking at a 2006's a few months back and it has been revised. You have the correct ones identified, so there will be a few changes as to how you do this mod.

PWPTSX

So did anyone do the TB bypass mod on their 2006 yet??? i wanna do this mod on mine, but need instruction and pic~

JTso

iTrader: (2)

I would think the procedure should be similar to the 04/05, perhaps just different hose location.

PWPTSX

ohh i see, i was just afriad that i will mod the wrong thing, anyone have a diagram showing the in and out coolant bypass for the 2006 TB??

GSGOMEZ

Damn, that's interesting. I don't know if it is good idea to do that stuff on my TSX because I live in New Mexico and it was pretty cold during the winter. I will see if I can do it or not.

moda_way

Here in Ohio, we've got plenty of cold days last winter and I've never had an issue. You just let the car warm up a little bit if you are concerned.

GIBSON6594

Gets pretty cold here in NY too, never had a problem

yuhoo22

is it worth for me to do this mod if I don't have the heat gasket installed.....actually I am running a totally stock TSX (if you exclude the comptech sway and brake pad upgrade)?????

GIBSON6594

I believe you can get a horse or two from this by itself, it does significantly reduce TB temp to the touch

JTso

iTrader: (2)

Bypass the two slanted down fittings. It might be slightly more difficult due to the fitting angle. You probably need two right-angle fittings and connect them together with a short length hose.

PWPTSX

Thanks JTso! but i still have question if you don't mind........

so.......
1. i need to bypass the two hose that are connected to "E-15-10" and the one that is right below it?? so the two hose become one?
2. then using a short length hose, connect it to the hose that is attached to E-2?

sorry for the question~

JTso

iTrader: (2)

1. Yes
2. If you can find a fitting to connect the two hoses together without pinching them, that would work.

etarui

iTrader: (2)

I don't believe you need to touch E-2. Just the two lines at E-15-10.

JTso...if this mod is complete, is there still a need to drain the coolent when performing the Hondata Heatshield installation?

Tsx536

When doing my supercharger install, Comptech took this mod off.

I'm thinking about doing it again. Anyone see any negatives in doing this with an SC setup?

GIBSON6594

Greedy bastard

Schizm

it was probably a CYA on their part

Tsx536

Just tryin' to help keep my temps down.

JTso

iTrader: (2)

You still need to drain until the fluid level is below the cylinder head.

etarui

iTrader: (2)

Okay...I performed this mod on my 2006 TSX yesterday, when installing the K&N Typhoon intake (WOW...this gets loud at WOT!!!)

Here is a picture of my engine bay before the install:


Here is a shot of the lines that will need to be touched. I did this mod slightly different than how JTso had recommended. This cost $0.00 as I simply re-routed the lines.



As you can see from the above diagram, I labeled each of the connection points. Here are the steps I took:

1. Put a towel below the lines as coolant will come out.
2. Disconnect A1
3. Disconnect B2
4. Re-route the end of the hose from A1 to B2
5. Re-route the end of the hose from B2 to A1
6. Check all connections for a tight fit

Here is a picture of the finished bypass:



And here is a picture with intake installed:



I hope this helps. JTso - since you were the creator of this mod, can you please validate the way I performed it, and chime in with any concerns you may have?

Cheers!

afici0nad0

^

even cheaper...

JTso

iTrader: (2)

That will work just fine as long as the pre-formed hose doesn't cause any kink. I would leave B2 not connected to A1 as it's now pinching the hose. The B2-A1 hose no longer serve any purpose after you connected A1-B2. Good job!