{Maybe at 1K}
Does ignition module effect timing?
Thread Starter
Instructor
Joined: Aug 2008
Posts: 110
Likes: 0
From: Le Roy NY
Does ignition module effect timing?
I'm in the process of diagnosing an intermittent stalling problem. As part of the process, I've disconnected the Mallory 6AL ignition box and reinstalled an HEI 4 pin module bought from NAPA. The car will fire up, but will not idle and it acts like the timing is retarded (carb backfire). At 10k RPM it sounds normal, but below that is an immediate stall. When the Mallory unit is re-installed, all is fine again.
Does the ignition module effect timing? The car was tuned with the Mallory box. Is the NAPA module faulty? I'd like to carry a spare module as a backup.
Does the ignition module effect timing? The car was tuned with the Mallory box. Is the NAPA module faulty? I'd like to carry a spare module as a backup.
Thread Starter
Instructor
Joined: Aug 2008
Posts: 110
Likes: 0
From: Le Roy NY
The NAPA module was faulty. Put in a used GM part and it's running better. Haven't had the intermittent stalling... yet. Another issue popped up which will be a separate thread. Thanks all.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski
