Pulling the Plenum for the first time...

[secondchance]

Originally Posted by Billy Mild

Has anyone ever made their own map hose? Is it recommended to replace the spider of vacuum hoses with all soft flexible ones like silicone?

I made my own map hose w/ 1/4" hard plastic hose and rubber hose from Advance Auto. You don't want to use soft flexible hose for vacuum. Vacuum will make them collapse and inoperable.

[Billy Mild]

Originally Posted by secondchance

I made my own map hose w/ 1/4" hard plastic hose and rubber hose from Advance Auto. You don't want to use soft flexible hose for vacuum. Vacuum will make them collapse and inoperable.

On my 944 Turbo I used all silicone tubing for the vacuum lines. It worked great. They were oil resistant and everything.

[Harvie]

You may want to check with Eaton Aeroquip for hoses, they have every kind and size that will take anything you put into them.

[Billy Mild]

Now the fun starts...

Marq21 and I pulled the plenum on the ZR1 yesterday. Need to give him a shot out for helping me out on this job. Without him I would have not been able to fix the secondaries issue I was having, or get the complete job done.

First off, WOW. The car runs completely different. I don't even know what to say. If your car doesn't surprise you every time you hit the gas WOT, then you need to get some service done.

My car is having an intermittent high idle issue. It doesn't sit at the prescribed 750 RPM. It idles around 900 rpm normally, and occasionally after coming to a stop will be at 1200 RPM. With a Tech 1 hooked up the IAC shows 0. It occasionally would move, but at idle it was 0.

I have read there is IAC re-learning procedure that can be done. The battery was unhooked for a few hours. I have the FSM, but I don't know the correct search terms to find it.

-Vacuum leaks were fixed
-Plenum gaskets were in good shape so they were re-used
-Accell Injectors were installed
-Check Valve replaced for cruise
-PCV Breather hoses in the valley were replaced
-New MAP hose

The car runs great throughout the RPM's now. It drives great, except idle is a little weird. In between gears the idle will kind of hang around 1500 RPM.

[Billy Mild]

Parts have been ordered. I told the wife I ordered parts, but didn't tell her the total amount...

Please god don't let her see the CC bill.

[efnfast]

Originally Posted by Billy Mild

Parts have been ordered. I told the wife I ordered parts, but didn't tell her the total amount...

Please god don't let her see the CC bill.

When I did my exhaust, she asked how much? I said about the same as the new couch you're looking at. I had to wait. Don't buy Lazy Boy buy the way.

[Billy Mild]

I forgot to post a few pictures. I should have taken more, but we were trying to get things done.



Oil vapors were being vented to the atmosphere. I don't understand how this car ran at all.



In this picture you will see a mouse nests. Guess what? There was a crispy dead mouse still in there. Surprisingly there are no chewed wires.

[Billy Mild]

I didn't remove the TB at all, also I didn't clean the inside of the plenum at all.

[XfireZ51]

Originally Posted by Billy Mild

I didn't remove the TB at all, also I didn't clean the inside of the plenum at all.

Did you remove the throttle cable?

[Billy Mild]

Yes I did remove the throttle cables.