TOP END REFINISHING

[Schrade]

Key ON, pulled IAC, cranked it, and it went to 3k rpm.

[Schrade]

Originally Posted by efnfast

Schrade, did you clean the slimy stuff out of the throttle body,around the plates, nice and clean now?

Throttle bores are spotless. Butterflies let no light through when the TB was re-assembled.

[efnfast]

Originally Posted by Schrade

Throttle bores are spotless. Butterflies let no light through when the TB was re-assembled.

??? Guys? I'm no expert, but they told me not to clean the DAG out of there?

[A26B]

Originally Posted by Schrade

Key ON, pulled IAC, cranked it, and it went to 3k rpm.

Don't pull the IAC valve, only the electrical connector to the IAC valve. With the IAC valve removed, you have opened a large bypass around the throttle body.

[Schrade]

Originally Posted by efnfast

??? Guys? I'm no expert, but they told me not to clean the DAG out of there?

The shiny sealing film is intact - I saw that posted many pages ago.

(I had a feeling that's what you were getting at there Steve )

Originally Posted by A26B

Don't pull the IAC valve, only the electrical connector to the IAC valve. With the IAC valve removed, you have opened a large bypass around the throttle body.

I should have said that I pulled the IAC CONNECTOR...

[efnfast]

OK, seems like that would be an easy mistake to make. I thought about rereading the whole thread, figured it must have already been mentioned, but it's a loooong thread.

[Schrade]

Originally Posted by efnfast

OK, seems like that would be an easy mistake to make. I thought about rereading the whole thread, figured it must have already been mentioned, but it's a loooong thread.

I can't afford to not go back - too much good stuff I miss if I don't....

I cannot get an Allen head in that Min Adj stud either... I did get a 5/16" on the nut, and got it backing out ATM.

[Schrade]

Put a phone book over the TB extension - a hiss started, then got LOUD...

[Schrade]

Found it. Right [near] the FPR vacuum connection to the plenum.

(turned out to be the plenum-to-PCV cap connector. It had a zip tie, and I hadn't replaced it)

Can't hear it too well in the vid; I tried to get the hose near the mike in the cam, but when I held the hose to my ear, it almost pulled out my brain cells. All 2 of 'em

http://www.youtube.com/watch?v=Hw0mfEs8bLk

So now, it's still idling with a 150rpm swing, 775 - 925... An IRREGULAR lope.

[XfireZ51]

Originally Posted by Schrade

Found it. Right [near] the FPR vacuum connection to the plenum.

(turned out to be the plenum-to-PCV cap connector. It had a zip tie, and I hadn't replaced it)

Can't hear it too well in the vid; I tried to get the hose near the mike in the cam, but when I held the hose to my ear, it almost pulled out my brain cells. All 2 of 'em

http://www.youtube.com/watch?v=Hw0mfEs8bLk

So now, it's still idling with a 150rpm swing, 775 - 925...

Ok. Is IAC disconnected? If not, what does DM tell you for IAC counts and what is TPS V at idle? If it's not .57v > TPS > .53v, then adjust TPS with motor OFF.
START motor, then let it idle down. What happens? Still surging? Also, if you unplugged IAC, you should have done an IAC reset after plugging it back in.