hard start when warm?
Thread Starter
Advanced
Joined: Feb 2011
Posts: 67
Likes: 2
From: Logan IA
hard start when warm?
As the title says. The car starts fine when cold. The car also starts fine if I shut it off and then immediately start it again. It does not start well if it has been warmed up, shut off, and sits for a bit.
When I start it after sitting for a bit, it takes a number of "cranks" for it to actually "fire"... and when it does fire it doesn't feel strong. It sounds like it's grumbling, "fine, i'll start, but dont expect anything special... gimme a few seconds".
I've heard this could be the fuel injectors leaking? true? Anything else?
When I start it after sitting for a bit, it takes a number of "cranks" for it to actually "fire"... and when it does fire it doesn't feel strong. It sounds like it's grumbling, "fine, i'll start, but dont expect anything special... gimme a few seconds".
I've heard this could be the fuel injectors leaking? true? Anything else?
Banned Scam/Spammer
Joined: Jul 2006
Posts: 2,911
Likes: 10
From: Simi Valley CA
When the car is cold, it doesn't use the 02 sensors. They take a few mins to warm up. I assume you've looked at the intake couplings after the MAF. Does it throw any codes?
Have you checked the plugs to see if any are rich/lean?
Does it blow black smoke when it finally starts?
How long does it take before it starts running correctly?
Have you checked the plugs to see if any are rich/lean?
Does it blow black smoke when it finally starts?
How long does it take before it starts running correctly?
Thread Starter
Advanced
Joined: Feb 2011
Posts: 67
Likes: 2
From: Logan IA
When the car is cold, it doesn't use the 02 sensors. They take a few mins to warm up. I assume you've looked at the intake couplings after the MAF. Does it throw any codes?
Have you checked the plugs to see if any are rich/lean?
Does it blow black smoke when it finally starts?
How long does it take before it starts running correctly?
Have you checked the plugs to see if any are rich/lean?
Does it blow black smoke when it finally starts?
How long does it take before it starts running correctly?
P0327 - PCM knock sensor
C1217 - TCS (stupid traction control
)C1282 - TCS (stupid traction control
)U1000 - SDM (i think this had to do with battery dying)
B0446 - HVAC (this has since been fixed and the actuator is not causing the error anymore)
I dont think any of that should be related to the starting issue.
I have found that it helps if I give it some gas when I'm starting it when it's warm.
1 or more Leaky fuel injectors most likely.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
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
Le Mans Master
Joined: Dec 2005
Posts: 8,562
Likes: 950
From: Communist Colorado
Is your a/c on when you try to restart and it does this? Im having that problem. When I shut the a/c off befor shutting the car down, then the restart is fine. If I dont, the symptoms are like yours and the car takes a few tries and some feathering of the throttle to keep running. My car ihas a cam and all supporting bolt ons.
Once I drive it around with the a/c on it idles fine..... its just the restarts that are giving me grief.
Heres a thread I started:
http://forums.corvetteforum.com/c5-t...th-a-c-on.html
Once I drive it around with the a/c on it idles fine..... its just the restarts that are giving me grief.
Heres a thread I started:
http://forums.corvetteforum.com/c5-t...th-a-c-on.html
Last edited by 81c3; Jun 8, 2011 at 11:45 PM.
