84 Vette starting problem
Thread Starter
Intermediate
Joined: Apr 2005
Posts: 43
Likes: 0
From: near Elsberry Mo StL C-3 Sharks
84 Vette starting problem
I have an 84 vette (74k) that had a starting problem after it has been run a while.... It lost spark.....after sitting a while and it cooled down it would fire back up....didn't do this all the time....just when it felt like it. Replaced coil and ign module in dist (Accel) and always seems to fire up now....BUT after it warms up it won't fire in crank position but when you release the key to run position it fires up. I can crank it for 15 sec and won't fire until in run position...can also just barely touch crank position with key and be running.... Any suggestions ??? I was told to replace the ign switch on steering column...Any help would be appreciated... Thanks, Al..aka carnutt 94 
Team Owner
Joined: Sep 2003
Posts: 25,386
Likes: 2,737
I have an 84 vette (74k) that had a starting problem after it has been run a while.... It lost spark.....after sitting a while and it cooled down it would fire back up....didn't do this all the time....just when it felt like it. Replaced coil and ign module in dist (Accel) and always seems to fire up now....BUT after it warms up it won't fire in crank position but when you release the key to run position it fires up. I can crank it for 15 sec and won't fire until in run position...can also just barely touch crank position with key and be running.... Any suggestions ??? I was told to replace the ign switch on steering column...Any help would be appreciated... Thanks, Al..aka carnutt 94
The "no crank" when hot is a separate issue and with your miles and if it's an OE starter that problem doesn't surprise me. The coil and module were likely not needed but maybe good maintenance and if you say it helped then there's no argue.
Last edited by WVZR-1; Aug 16, 2015 at 11:04 AM.
Team Owner
Joined: Sep 2003
Posts: 25,386
Likes: 2,737
You DO NOT have a fuse or ground issue. Is cleaning grounds good maintenance? Yes - but certainly not required for the issues you mention. Your coil and module replacement has no relationship to your current issues.
Do you have an FSM?
GOOGLE - GM column mounted ignition switch adjustment and I would expect results. I didn't look and won't.
Ignition switch adjustment hasn't changed since GM started using the column mounted key/cylinder in '69. Adjustment will be in any FSM that you have
Do you have an FSM?
GOOGLE - GM column mounted ignition switch adjustment and I would expect results. I didn't look and won't.
Ignition switch adjustment hasn't changed since GM started using the column mounted key/cylinder in '69. Adjustment will be in any FSM that you have
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
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
Thread Starter
Intermediate
Joined: Apr 2005
Posts: 43
Likes: 0
From: near Elsberry Mo StL C-3 Sharks
You don't necessarily need a new ignition switch but maybe just an "adjustment" of the switch. The switch is mounted to the column with screws through an elongated mounting bracket. It is NOT uncommon for the switch to require adjustment. Could you need new? Certainly. You would also want to inspect the switch electrical connecters (there are two) while you're there.
The "no crank" when hot is a separate issue and with your miles and if it's an OE starter that problem doesn't surprise me. The coil and module were likely not needed but maybe good maintenance and if you say it helped then there's no argue.
The "no crank" when hot is a separate issue and with your miles and if it's an OE starter that problem doesn't surprise me. The coil and module were likely not needed but maybe good maintenance and if you say it helped then there's no argue.
Thread Starter
Intermediate
Joined: Apr 2005
Posts: 43
Likes: 0
From: near Elsberry Mo StL C-3 Sharks
yes and also new pump. I know it is an ignition issue as I have put a timing light on it and get no indication of spark when it is doing this.
Last edited by carnutt94; Aug 16, 2015 at 11:51 AM.