The No Start Gremlin
Thread Starter
Instructor
Joined: Jan 2005
Posts: 236
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From: Hudson FL
The No Start Gremlin
Anybody run into this type of problem.
After sitting for a day, the car would crank strong but not start.
Try it a few times and then start and idle perfectly. Then I could start the car all day long no problems. Then start fine every day for a week.
Then try to start next day, cranks fine but no start. Depress Gas pedal and she spits, pops and sputters like she wants to start but doesnt, Try again and she starts sputters idles rough, then bang, she smoothes out, idles and runs great. Try starting all day - no problems. It's crazy!!!
What could this be ? Once started and idling fine, she runs perfect, high speed perfect. Just on 1st cold start of the day.
I never seen anything like this before !!! I have tested anything or checked codes yet.
After sitting for a day, the car would crank strong but not start.
Try it a few times and then start and idle perfectly. Then I could start the car all day long no problems. Then start fine every day for a week.
Then try to start next day, cranks fine but no start. Depress Gas pedal and she spits, pops and sputters like she wants to start but doesnt, Try again and she starts sputters idles rough, then bang, she smoothes out, idles and runs great. Try starting all day - no problems. It's crazy!!!
What could this be ? Once started and idling fine, she runs perfect, high speed perfect. Just on 1st cold start of the day.
I never seen anything like this before !!! I have tested anything or checked codes yet.
Team Owner
Joined: Sep 2003
Posts: 20,179
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From: Freedom is never more than one generation away from extinction.
St. Jude '03 thru '24
Originally Posted by fjm59vette
I have tested anything or checked codes yet.
Well whatever the case.... no profile info, no year model or engine/trans type. So how the heck can we help you?
Le Mans Master
Joined: Jan 2006
Posts: 6,564
Likes: 6
From: Woodstock Georgia
I am going to bet that hooked to scanner you are going to get code 16, distributor low resonance. Another opti-spark gone to opit-heaven. If I am guessing right you are not too far from a roadside breakdown as usually low resonnce is first sign of opti-failure. PS--if so don't go cheap part, too much labor to have to do it second time anytime soon.
Thread Starter
Instructor
Joined: Jan 2005
Posts: 236
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From: Hudson FL
yeah but
Originally Posted by aminnich
I am going to bet that hooked to scanner you are going to get code 16, distributor low resonance. Another opti-spark gone to opit-heaven. If I am guessing right you are not too far from a roadside breakdown as usually low resonnce is first sign of opti-failure. PS--if so don't go cheap part, too much labor to have to do it second time anytime soon.
Yeah but everything I read says when the Opti is going, there are other signs while driving not just starting. Once the car is started, and idle smooths out, the car runs & idles perfectly.
Could it be anything other then the Opti?
Last edited by fjm59vette; Feb 19, 2006 at 08:11 PM. Reason: spelling
Le Mans Master
Joined: Jan 2006
Posts: 6,564
Likes: 6
From: Woodstock Georgia
Originally Posted by fjm59vette
Yeah but everything I read says when the Opti is going, there are other signs while driving not just starting. Once the car is started, and idle smooths out, the car runs & idles perfectly.
Could it be anything other then the Opti?
Could it be anything other then the Opti?
Burning Brakes
Joined: Nov 2005
Posts: 848
Likes: 1
From: 1992 LT1 6 speed Cayman Islands
Originally Posted by fjm59vette
Sorry.... I have "not" tested anything or checked codes yet.
My vette is a 1994 6spd Coupe (Base) Stock - No Mods. about 95K miles on it.
My vette is a 1994 6spd Coupe (Base) Stock - No Mods. about 95K miles on it.
LT1 engine. Pull the codes and report. This dont sound like an Opti going bad but it does sound like an ignition problem.
There is probably a loose connection somewhere between the ECM and the Opti. There are a couple of places to check after you have pulled the codes. Check connection on top of manifold passenger side between injustors, Connection on ICM, commections on coil and connection on Opti.
Pull the codes and report back and we can start to narrow this problem down and know for sure if it is fuel or ignition related.
Hope this helps.
Jerris
Race Director
Joined: Dec 2005
Posts: 15,465
Likes: 1
I'm no mechaniic but , for what it's worth , i have the same problem with my '85 and i think it maybe the fuel pump relay because from what i've read here it'll kick in when you crank the motor and the oil pressure
reaches 10 psi . Other than that , i'm as clueless as you i'm affraid
Hope this may point you in the right direction 
reaches 10 psi . Other than that , i'm as clueless as you i'm affraid
Hope this may point you in the right direction
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Melting Slicks
Joined: Dec 2004
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From: Obama=death for America
It's possibly a fuel delivery problem and sounds like it occurs every time the car sits for a long period.
If you don't have the proper tools, I'd have a Corvette shop keep the car over night. The following morning, I'd try to start the car and pull the codes. You'll instantly learn the name of your gremlin(s).
Don't throw money at a car until you know what needs fixing. Too many people replace things without knowing what's wrong. And that's a waste of time and money.
If you don't have the proper tools, I'd have a Corvette shop keep the car over night. The following morning, I'd try to start the car and pull the codes. You'll instantly learn the name of your gremlin(s).
Don't throw money at a car until you know what needs fixing. Too many people replace things without knowing what's wrong. And that's a waste of time and money.
