Coolant lines to TB

[J92EGSX]

I was wondering if i Block off my cooling lines for the thottle body if i will have any sort of idle problems?

 

[CanadianTSi]

When the car is cold you probably will.

 

[turbowop]

If you block off the FIAV along with the coolant lines you won't have any problems. Blocking off the FIAV will kill the car's ability to idle up on cold mornings to quicken warm up time. Other than that, there are no other problems with it.

 

[chaye]

i did it on mine, pluged the lines and plugged the FIAV and have no problems at all
the cold start isnt too bad, my car idles around 1000 (i have mine set at 950) so its not to bad at all...

i also notice that my intake manifold is colder now.......

 

[DSMJim]

Originally posted by chaye
i also notice that my intake manifold is colder now.......

This amuses me. What makes you think your throttle body and or intake manifold are cooler now because coolant is no longer running through the FIAV? Your manifold after a hard run is way hotter than your coolant is even at max temp. What your saying is impossible, however I'm interested in how you came to this conclusion?

Blocking the FAIV does absolutely nothing other than not allow your car to have a fast idle to warm up. Other then stopping that (why?) it doesn't absolutely nothing (zip zero nada) for performance.

 

[chaye]

mmmmm...you find it amuzing DSMjim.....

lets see....before i had the coolant lines plugged to the tbody the tbody would get all hot....i wonder why??? i dont konw? im going to guess because the coolant is freaking hot after the car has been on for a while........also i konw this cause im a freak and after i rebuilded my engine i touched the intake manifold after every run, then after i blocked the FIAV (i was hunting down the cause of my idle surge) i touched tehmanifold again and what do you konw its cold.........why would this be???? maybe im just stupid according to you DSMjim

laugh all you want......i dont care

 

[clownface]

HAHAHAHAHAHAHHAHAHAHAHHHA:laugh: YOUR A IDIOT FOR THINKING ITS COLDER NOW AHAHAHAHAHAHAHAHHAAHHAHAHA:laugh:

o, sorry, just thought i would laugh all i wanted for a minute.

i acutally did this mod also, nothing bad has resulted from it but i dunno if it did anything good or not, i never check the temps. But if he said it made his colder then im thinking it might have made mine colder also. I think ive seen DSMjim say this somewhere before, it dosnt matter cause the engine temps make it hot anyway, i guess that might be true but the mod only took like 5 min to do so i guess it dont matter if it works or not to me, o well, if he reports its colder and he acutally touched it then im gonna take his word for it for now.

 

[chaye]

Originally posted by clownface
HAHAHAHAHAHAHHAHAHAHAHHHA:laugh: YOUR A IDIOT FOR THINKING ITS COLDER NOW AHAHAHAHAHAHAHAHHAAHHAHAHA:laugh:

o, sorry, just thought i would laugh all i wanted for a minute.

i acutally did this mod also, nothing bad has resulted from it but i dunno if it did anything good or not, i never check the temps. But if he said it made his colder then im thinking it might have made mine colder also.

he he that was less than a minute........
let me finish that one
hahhahahhahahahahhah baousaahahhahahhahahhhaah..ahahhaha
ok.........fugger...

 

[TwoLiterV8Eater]

I removed the coolant lines to my TB because I had the car apart, and it was pretty simple to do. I live in FL so I don't have any cold start issues. I have NOT blocked off the FIAV and do not have any idle issues at all, but YMMV. I will probably end up reconnecting the coolant hoses when the new motor goes in because it didnt seem to really change anything with my car at all.

 

[turbowop]

Removing the coolant lines won't do anything performance-wise. I only did it because I had a bad FIAV that caused my idle to surge during warm-up. Removed coolant lines, blocked FIAV, problem solved. The FIAV is the only reason that coolant is ran to the throttle body. If your FIAV is working properly than there is no real good reason to do this.

 

[TwoLiterV8Eater]

I did it in hopes of lowering my intake air temps. Oh well, it didn't heh.

 

[1fast97gsx]

damn guess I did this mod for nothing. :thumbdown

 

[DSMJim]

Originally posted by chaye
mmmmm...you find it amuzing DSMjim.....

lets see....before i had the coolant lines plugged to the tbody the tbody would get all hot....i wonder why??? i dont konw? im going to guess because the coolant is freaking hot after the car has been on for a while........also i konw this cause im a freak and after i rebuilded my engine i touched the intake manifold after every run, then after i blocked the FIAV (i was hunting down the cause of my idle surge) i touched tehmanifold again and what do you konw its cold.........why would this be???? maybe im just stupid according to you DSMjim

laugh all you want......i dont care

Look, I'm not trying to pick a fight but I have tested this very thing your talking about and got completely different results. Unless your car is completely different than mine your results will be the same. Unfortunately I didn't do the super accurate "hand temperature" test.

I took my car for a 10 minute drive and came back to my house and let the car idle until the rad fan came on (which is when the coolant is the hottest it will be) and took a reading on my manifold with the FAIV hooked up using an infrared temperature sensor. I conducted the same test the following day with it unhooked and the surface temperature was exactly the same. I do not remember the actual temperature (mid 200's) but it was pretty well the same. I believe it was hotter with it unhooked actually, but that could just be a variation in the outside temperature as well or something like that. Regardless it was within 1-2 deg so it was the same for all intensive purposes.

While I appreciate that you may have found that it was cooler I did a test with an accurate instrument and there was no difference.

You must be logged in to view this image or video.

This is like the tool I used so you have an idea of what I'm talking about.

Hope that helps you understand why I'm saying what I am. If your car is somehow much cooler with it disconnected then thats great for you.

 

[STECARS]

I dont know wre this is gonna put this thread but,
yesterday i'm working on the car after a 20 min. ride. and i,m putting /measuring intercooler pipes. so i unbolted throttly body. It was f@ckin hot, it burned. pause..... today i i stumble on this thread again from a few days ago..............
conclusion my throttle body was burning ..and i was leaning my elbow on the intake manifold and it was alot cooler.
So someone explain that one. If elimating the lines to the tb, doesnt cool it down, if thats not true. then why wasnt the manifold as scorching hot as the tb.? becuase the hot coolant is running through it! t5he manifold is connected to cylinder head = verhot , howver the manifold doesnt have boiling hot coolant running through it , thats why it was cooler . I my opinion the tb should be cooler cuase its further from head and is constantly seeing cold air from intercooler. so I would agree removing the lines from tb should at least bring it down to the manifold temperature. No performance gain maybe , but the point is that the tb will infact be cooler.

 

[chaye]

hey i didnt say at any given point that taking the coolant lines off the tbody was going to increase perfomace in any way and if it did then its probably added bout .0000000000001 HP to the flywheel..
like i said im not arguing with anyone here i said i did this mod just cause i was searching for a cure to my idle surge and came to realize that my intakemanifold and my tbody arent hot anymore..maybe its cuase i have a HONDA disguised as a mitsu.....
anyways

it dont matter what your little test shows cause honestly i think it was a waste of time, my hands-on-the-manifold was more than enough for me....

besides it makes it alot easier to remove the tbody once you dont have the lines on the tbody...that to me is a plus

 

[STECARS]

Originally posted by STECARS
I dont know wre this is gonna put this thread but,
yesterday i'm working on the car after a 20 min. ride. and i,m putting /measuring intercooler pipes. so i unbolted throttly body. It was f@ckin hot, it burned. pause..... today i i stumble on this thread again from a few days ago..............
conclusion my throttle body was burning ..and i was leaning my elbow on the intake manifold and it was alot cooler.
So someone explain that one. If elimating the lines to the tb, doesnt cool it down, if thats not true. then why wasnt the manifold as scorching hot as the tb.? t5he manifold is connected to cylinder head = verhot , howver the manifold doesnt have boiling hot coolant running through it, so thats why it was cooler than the tb. I my opinion the tb should be cooler cuase its further from head and is constantly seeing cold air from intercooler. so i would agree removing the lines should at least bring it down to the manifold temperature.

Chaye - calm down . reread my post and you will see I strongly agree with you. Removing lines should cool tb enough so that a hand test will show that its cooler. I just want someone to comment on my post.


ok i edited my post to make it more understanding.

 

[chaye]

hey STECARS i wasnt disagreeing with you or anything, sorry if i forgot to adress my post, i was actually targeting DSMJim not you STECARS.
sorry oh and i was typing my last post like at 3am soo my reading skills werent that great...
sorry STECARS

 

[Mike1992]

I think this mod would help a Non-Turbo car, turbo guys are pushing hot air into there motors, me as a NT and my CAI are sucking in cool air, I wish I had one of them tester meters

 

[abakja1]

Josh,.

It simply isnt worth all the TROUBLE and headaches that may come about with blocking the coolant lines. It may work for others, but it may not work for you, so would it be worth it for zero performance gain? It may save having to replace the hoses if they go bad, but IDLE SURGE or other complications isnt worth it,..

DONT DO IT!!

Kevin

 

[DevilSperm]

ok im a little torn on this subject...i was going to start a thread to ask if i could loop the coolant lines without blocking off the FIAV....reason being I too noticed my TB is a lot hotter than my intake manifold...the coolant lines running into it was the first thing i thought of...heres how i look at it...my little bity intercooler tries its hardest to cool down the air and does an ok job...but as soon as the air hits my TB neck, it warms up and then hits the TB and gets hot....basically counter-acting the IC....my TB and TB neck are the hottest parts of the intake track...why is this if it isnt the coolant lines? I want to believe you Jim but do you understand why im having a hard time? hopefully you guys are still subscribed to this thing.

 

[TwoLiterV8Eater]

Just to update this thread, My car developed horrible idle surge with the coolant lines disconnected during the winter months. I reconnected the lines, and immediatly all trace of surge was gone. I did not have the FIAV blocked off as mentioned above.

 

[thegreatms]

I did not have the FIAV blocked off as mentioned above.

well thats you problem. With it not blocked off you have a big path for air to go around your tb. This will cause idle surge because your ISC can't bring down your idle enough.

If you feel like trying this mod, for whatever reason, then block off the FIAV.

 

[diambo4life]

Looped my T/B lines maybe 18 months ago. I did not block anything and my car idles just like it did when bone stock. Winter or summer.

 

[TwoLiterV8Eater]

During the summer months the car was fine. The "mod" didnt really do anything though so I put it back to stock. To each his own I guess.

 

[Bohrn]

as per the last post like this...

1.) its not a performance modification.

2.) done right it will not hurt your idle in any way.

3.) it makes working on your car alot easier.


If you have a bad faiv, and you block it off, the coolant is not doing anything inside your throttle body so you may as well remove it.

I have had mine blocked off for over 2 years now. 2 canadian winters, no idle problems. You will have to readjust your bisss, but once you do, its fine.

and the big one, if you have to take your throttle body off, its WAY easier with no coolant going to it. Just remove upper ic pipe coupler and the 4 bolts. thats it, slide it off.

that said, like anything else you touch, if you don't understand the concept, or frig it up, you will have problems.