LBYRNES

On the left is the new part I got from my Chevy dealer (Part #17112193). On the right is the old IAT that I removed from my '93 LT-1 VIN-P.

They are not the same length. It that because it's the wrong part, or is the old one in the extended mode, while the new one is still in retraction after manufacturing?

Thanks,

Larry...

STL94LT1

Looks to me like the electrical connectors are different?

C4-90-41001

The connector shells looks different.

Is this an optical illusion because the two parts are not oriented the same way in your photo or does one have a square connector shell whereas the other one has a rectangular connector shell?

basselope

If the connectors are different. Return it - take the old one with you.

the body and pintle appear to be correct: the one one the left is retracted, as indicated by the compressed spring. The other is extended.

Also, you may want to spray some carb cleaner into the IAC port before installing the new one. This helps remove some of the crud that tends to build up there. It's not a bad idea to remove the solenoid, spray down that port and clean off the pintle every year or so just to help keep your idle smooth.

mtwoolford

for what it's worth the idle air control valve is not a solenoid (that's what I first thought it was); it's actually a small electric motor referred to as a "step" motor which is a shorter word than its proper name "syncronous" and easier to spell too. Basically the computer tells the motor how far to extend or retract the pintle and the motor maintains the pintle position.

I recently replaced an idle air control valve on a 96 and the only two caveats are: (one) throughly clean the recess where the pintle fits into and the air passages leading to and from the idle air control valve; and, (two) make sure the pintle is retracted/extended the recommended distance from the idle air control body / mounting flange.

good luck; if your old one was bad, a new one will certainly help clear up any driveability issues.

rodj

Different parts.
Yours is the old style used on L98's and early LT1.
New one is later LT1 style

grinditout

They are shipped compacted, when you install it and start the engine it will expand.