Throttlebody work

[cuisinartvette]

How is polishing a tb going to pick up power?

[Billy Mild]

It's not for increased power but to fix my sticking throttle.

http://www.zr1specialist.com/HAT%20W...tle%20body.htm

[George Maz]

Originally Posted by Dynomite

OK....I have to ask......What issue could lead to catastrophic engine failure?

Marc Haibeck’s inspection discovered the right upper camshaft chain facing was missing. A new facing was installed. The plastic retaining tab had let go. The left side facing was inspected and found to be present, but the cam cover tolerance at the bolts had to be corrected There's a link on his site that explains what can potentially go wrong.

1990 #1727 street tuned & Dyno-tune now completed

434 rwhp, 366 torque, 511 crankHP

[Billy Mild]

I got my TB and chip back. The car runs much smoother. He said my TB looked like a car with 100,000 miles on it. The tune is leaps and bounds better than what was on their initially. To think I have been driving it with this tune for so long. I thought it was just a clumsy running engine, that is not so. Idle is much improved as well.

I am still occasionally getting the high idle. If I stab the throttle it will come back down to where it should be instantly. Any suggestions on what I should look at next? IAC maybe?