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Thread: Throttle Body Issue

  1. #1

    Default Throttle Body Issue

    I recently finished up my 5.3L, and installed a Holley Sniper intake, along with Holley Sniper 102mm throttle body. The problem is now with engine at idle or revved, it sucks so much air with or without cold air intake attached is screams not whistles. It has no vacuum leaks, but sounds like it has HUGE one. Could the IAC be the issue, or is it a tuning issue? Please help.

  2. #2
    Join Date
    Nov 2014
    Ont. Canada


    What is your IAC Position at idle?

  3. #3


    Thanks for the reply. Hmm, I’ve never checked that nor do I know how. I did order a new IAC from Holley today, but guess I need to start figuring out how to check to make sure it’s set right.

  4. #4
    Join Date
    Dec 2009

    Default (Initial Checks & Adjustments - Read Step #3)
    May God's grace bless you in the Lord Jesus Christ.
    '92 Ford Mustang GT: 385" SBF, Dart SHP 8.2 block, TFS TW 11R 205 heads, 11.8:1 comp, TFS R-Series intake, Dominator MPFI & DIS, 36-1 crank trigger/1x cam sync, 160A 3G alternator, Optima Red battery, A/C, 100HP progressive dry direct-port NOS, Spal dual 12" fans/3-core Frostbite aluminum radiator, Pypes dual 2.5" exhaust/off-road X-pipe/shorty headers, S&W subframe connectors, LenTech Strip Terminator wide-ratio AOD/2800 RPM converter, M4602G aluminum driveshaft, FRPP 3.31 gears, Cobra Trac-Lok differential, Moser 31 spline axles, '04 Cobra 4-disc brakes, '93 Cobra booster & M/C, 5-lug Bullitt wheels & 245/45R17 tires.

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