Removing Lower Half Of Tb

[turbotsi92]

I have heard some people talking about this, and seen some pics, but how can you just remove the ISC? Do you have to have some kind of idle controller or what. I can't believe that you could just take off the lower half of the TB, put a plate on it, and it run just fine. I think my ISC is bad is why I am questioning this. I would rather buy a plate to block it off, than buy a new ISC. I already have my FIAV blocked off.

 

[turbotsi92]

Anybody?

 

[WFO-TSi]

I blocked my FIAV off with a plate and a rubber gasket to keep it air tight. For idle control I use the gas pedal. When I start it for the first time of the day I apply a little pressure to the gas pedal as well as pressing in the clutch. Once the engine starts to warm up it idles fine.

Did I answer your question or am I way off the mark?

 

[44pirate]

I blocked my FIAV off with a plate and a rubber gasket to keep it air tight. For idle control I use the gas pedal. When I start it for the first time of the day I apply a little pressure to the gas pedal as well as pressing in the clutch. Once the engine starts to warm up it idles fine.

Did I answer your question or am I way off the mark?

Same here.

 

[boostedinaz]

I have a block off plate that does exactly what you are talking about. It gets rid of the entire lower portion of the TB. It worked very well here in AZ as it doesn't get to cold. Sometimes in the winter I would need to give it gas for a bit to get a smooth idle but once it had a bit of heat to in it, it would idle just fine. Now you won't be able to run A/C and when your fans kick on, really any extra load on the engine, the idle will drop some. This may not be a big deal it may drive you nuts.

I reinstalled my lower TB becasue it is just ####ing hot in AZ and my AC needs to work.

As far as the IAC goes you don't have to buy a new one. There are rebuilt ones out there for about 90.00 or so and if you have a mutimeter you can hit up some junk yards and test them out to see if they are good or not.

Check out these links.

http://dmtalon.v8eaters.com/ISC.html
www.crebotech.com

 

[DSMedEG]

awesome link, im going through the same thing right now

 

[turbotsi92]

Thanks for the responses. Now all I need to know is where I can buy the block-off plate. I searched through some other threads, and I found some people found them at qprinc, but when i clicked on the links it just takes me to a search engine, no parts!

 

[Pj97GST]

Make your own block-off plate. Any piece of .032 or thicker aluminum will work. Cut it to fit using the lower half as a template.

When you remove the FIAV from the TB, you might want to seal up the air passages with JB weld, as this will cure some of the slight 1200~1500 rpm idle surge that you may see. Use the rubber gasket or some RTV and screw the plate back down.

Leave the ISC motor electrically connected or you may see a CEL. You can just zip-tie it out of the way.

As a point of note, to combat the idle drop with the A/C running, you can just adjust your idle a bit higher for the summer months. Simple and effective. I adjusted mine to about 850 and that eliminated any issues with the car stalling while the A/C was running. I'm not too concerned with it now, as I don't have A/C.

This is applicable to both 1G's, and 2G's with a failing ISC or for those that simply want to eliminate excess crap from under the hood.

 

[boostedinaz]

Make your own block-off plate. Any piece of .032 or thicker aluminum will work. Cut it to fit using the lower half as a template.

When you remove the FIAV from the TB, you might want to seal up the air passages with JB weld, as this will cure some of the slight 1200~1500 rpm idle surge that you may see. Use the rubber gasket or some RTV and screw the plate back down.

Leave the ISC motor electrically connected or you may see a CEL. You can just zip-tie it out of the way.

As a point of note, to combat the idle drop with the A/C running, you can just adjust your idle a bit higher for the summer months. Simple and effective. I adjusted mine to about 850 and that eliminated any issues with the car stalling while the A/C was running. I'm not too concerned with it now, as I don't have A/C.

This is applicable to both 1G's, and 2G's with a failing ISC or for those that simply want to eliminate excess crap from under the hood.

I'm not sure on a 2G, but on a 1G you can disconect the ISC all together and nothing adverse will happen.