Throttle body coolant bypass mod
#41
Originally Posted by moda_way
We've been getting near 100 degree weather here in Ohio and all I can say is, I notice the TB temp difference. I've checked a few times after a long highway drive and this is a great mod.
Only thing is, the winter makes me a little nervous to run without the lines. I wonder if a little moisture (like normal humidity in the air) would contribute to any freezing? My guess is if you let the car warm up, the engine bay temp would take care of that though.
Only thing is, the winter makes me a little nervous to run without the lines. I wonder if a little moisture (like normal humidity in the air) would contribute to any freezing? My guess is if you let the car warm up, the engine bay temp would take care of that though.
#42
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Originally Posted by moda_way
Only thing is, the winter makes me a little nervous to run without the lines. I wonder if a little moisture (like normal humidity in the air) would contribute to any freezing? My guess is if you let the car warm up, the engine bay temp would take care of that though.
#43
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Originally Posted by JTso
Btw, I just did a freeze test on the TB last night. I put the TB in a plastic bag and stuck it in the freezer for about 12 hours under -3.8 F temp just to see what happens. This morning I took it out and manually move the throttle plate and it moves freely and returns to normal position without any problems. The throttle cam return spring is so strong and the plate movement is driven by a motor. I don't think it would have any problems bypassing the coolant hoses even during winter time. However, like any other mods, you do it at your own risk. ![Big Grin](https://acurazine.com/forums/images/smilies/biggrin.gif)
![Big Grin](https://acurazine.com/forums/images/smilies/biggrin.gif)
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
#45
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Originally Posted by JTso
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.
#46
Someone stole "My Garage"
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
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
#47
Someone stole "My Garage"
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.
#48
ABP TSX
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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"
#50
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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.
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.
![Name: TBModParts.jpg
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#53
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^^ That's great guys. They fit perfectly.
I just finished the TB Coolant Bypass mod!!![Woot](https://acurazine.com/forums/images/smilies/woot.gif)
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.
I just finished the TB Coolant Bypass mod!!
![Woot](https://acurazine.com/forums/images/smilies/woot.gif)
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.
#54
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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.
#59
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?
JTso's Image:
My Image:
![](http://i3.photobucket.com/albums/y94/etarui/IMG_1864.jpg)
It looks as though both hoses are now located next to each other. Can anyone please confirm?
#63
Originally Posted by JTso
I would think the procedure should be similar to the 04/05, perhaps just different hose location.
#64
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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.
#65
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Originally Posted by 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.
#66
My Garage
Originally Posted by 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.
#67
John Starks - The Dunk
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)?????
#68
My Garage
Originally Posted by 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)?????
#70
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~
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~
#71
Originally Posted by 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~
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~
2. If you can find a fitting to connect the two hoses together without pinching them, that would work.
#72
Originally Posted by 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~
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~
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?
#74
My Garage
Originally Posted by 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?
I'm thinking about doing it again. Anyone see any negatives in doing this with an SC setup?
![Tomato](https://acurazine.com/forums/images/smilies/tomato.gif)
![Tongue](https://acurazine.com/forums/images/smilies/tongue.gif)
#78
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:
![Name: Before.jpg
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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.
![Name: TB_Before.jpg
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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:
![Name: TB_After.jpg
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Size: 23.8 KB](https://acurazine.com/forums/attachments/1g-tsx-performance-parts-modifications-126/55389d1501302077-throttle-body-coolant-bypass-mod-tb_after.jpg)
And here is a picture with intake installed:
![Name: After.jpg
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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!
Here is a picture of my engine bay before the install:
![Name: Before.jpg
Views: 3937
Size: 53.9 KB](https://acurazine.com/forums/attachments/1g-tsx-performance-parts-modifications-126/55387d1501302077-throttle-body-coolant-bypass-mod-before.jpg)
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.
![Name: TB_Before.jpg
Views: 4183
Size: 22.6 KB](https://acurazine.com/forums/attachments/1g-tsx-performance-parts-modifications-126/55388d1501302077-throttle-body-coolant-bypass-mod-tb_before.jpg)
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:
![Name: TB_After.jpg
Views: 5292
Size: 23.8 KB](https://acurazine.com/forums/attachments/1g-tsx-performance-parts-modifications-126/55389d1501302077-throttle-body-coolant-bypass-mod-tb_after.jpg)
And here is a picture with intake installed:
![Name: After.jpg
Views: 4035
Size: 57.4 KB](https://acurazine.com/forums/attachments/1g-tsx-performance-parts-modifications-126/55390d1501302077-throttle-body-coolant-bypass-mod-after.jpg)
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!
#80
Originally Posted by etarui
Okay 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!
Cheers!