Holley sniper EFI help
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Joined: Jan 2019
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Car: 1985 Pontiac trans am
Engine: 350
Holley sniper EFI help
Hey guys I've got an 85 TA with a vortec 350 swapped in. I recently swapped over to Holley sniper EFI from carb. I'm starting to get really frustrated. The car runs and starts right up and she's drivable but my idle will not drop to where she is set. The iac% in the directions say it should stay between 0-10% but mine will be at 0 and the idle will be where she's set to but them all of a sudden jump to 1300 rpm and iac% will jump from 10% to 60% or higher at times. If anyone can point me in the right direction of how to fix this she'll be ready to rip!
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Joined: Sep 2017
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Re: Holley sniper EFI help
Hey guys I've got an 85 TA with a vortec 350 swapped in. I recently swapped over to Holley sniper EFI from carb. I'm starting to get really frustrated. The car runs and starts right up and she's drivable but my idle will not drop to where she is set. The iac% in the directions say it should stay between 0-10% but mine will be at 0 and the idle will be where she's set to but them all of a sudden jump to 1300 rpm and iac% will jump from 10% to 60% or higher at times. If anyone can point me in the right direction of how to fix this she'll be ready to rip!
Here is a link to the Holley forum. These guys/gals are very helpful
Louis
https://forums.holley.com/forumdispl...?82-Sniper-EFI
Joined: Sep 2005
Posts: 1,914
Likes: 321
From: NJ
Car: 1987 IROC-Z
Engine: 406 on N20 w/ EFI
Transmission: P.B. 700R4
Axle/Gears: 12 bolt w/ 3.91
Re: Holley sniper EFI help
my IAC % jumps around too. I'm brand new to the sniper efi system and I am working (remotely) with my efi tuner to try to get it dialed in. whenever I have it at around 4-8%, the next day it will be at like 40% or something weird. would love to solve this once and for all. keep us posted.
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1bad91Z
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Apr 17, 2008 10:23 AM