Announcement

Collapse
No announcement yet.

LT1 IAC Valve question

Collapse
X
Collapse
Who has read this thread:
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • LT1 IAC Valve question

    MVC-005F

    New project. 1994 Astro Van. 42,378 miles. The body and interior are 9.9's out of a 10. This thing is clean! I am the 2nd owner.
    It was purchased in late '93 by the PO. it had about 50 miles on it when he had a Callaway LT1 swapped into it. The swap was done well other then a few hacks I am finding. the van runs and drives okay, I just feel it should run BETTER...
    Here is the first issue I "think" I found.
    The air cleaner is a Banks "Ram Air" unit with a large cone filter.

    This is the unit as mounted under the hood.... Not real pretty is it?]

    Here is the IAC mounted in the air cleaner housing. That other hole was there as well]


    Looking inside the air cleaner

    I am thinking this is not the best location for the IAC. Shouldn't it be between the air cleaner and the throttle body? In the full air flow stream going into the throttle body? Right now it is just sitting outside the air cleaner trying to read the air flow from random drafts and minor gusts that "just happen" to blow across it... The blow molded housing seals nicely to the top of the cone filter but the bottom has a decent gap that does not seal. That will draw air out of the IAC's vision also... I think this is causing a lot of the idle quality problems and I am going to rectify it... Some how.
    Mark
    Last edited by astroracer; June 17th, 2017, 03:09 PM.
    2002 C.E. WS6 RA TA- Yellow #190 of 2391
    1995 GMC Sierra Custom Pickup-White with pearl blue stealth flames
    1994 Formula V8-Red
    2000 Monte Carlo SS-Galaxy Silver
    2001 Astro- The wifes DD
    2004 Astro- My DD
    1992 Astro (291K) Gave to my brother-in-law... still going strong

  • #2
    That looks like your IAT (Intake Air Temperature) sensor. That is the correct location for it.
    alone_and_insane likes this.

    Comment


    • #3
      Right, I realized that after doing more digging.Thanks for confirming.
      Mark
      2002 C.E. WS6 RA TA- Yellow #190 of 2391
      1995 GMC Sierra Custom Pickup-White with pearl blue stealth flames
      1994 Formula V8-Red
      2000 Monte Carlo SS-Galaxy Silver
      2001 Astro- The wifes DD
      2004 Astro- My DD
      1992 Astro (291K) Gave to my brother-in-law... still going strong

      Comment


      • #4
        Does anyone know of a good tuner in the Flint area that could look at the tune on this van? The van runs and drives but the shift points are all screwed up and I think it should run better then it does.
        Mark
        2002 C.E. WS6 RA TA- Yellow #190 of 2391
        1995 GMC Sierra Custom Pickup-White with pearl blue stealth flames
        1994 Formula V8-Red
        2000 Monte Carlo SS-Galaxy Silver
        2001 Astro- The wifes DD
        2004 Astro- My DD
        1992 Astro (291K) Gave to my brother-in-law... still going strong

        Comment

        Working...
        X