Fuel pressure is where I would start too.
Cold Stumble
Thread Starter
Intermediate
Joined: May 2013
Posts: 42
Likes: 0
Cold Stumble
I have a 95 LT1 with auto trans. I usually warm up the car for a minute or two before taking off. I live on a service drive right off the main highway. If I accelerate at a normal pace to get up to highway speed the motor will stumble and pop then accelerate normally. If I feather it I can get up to speed without a stumble. Once the motor has done it once it will be fine the rest of the day, even on a cold start.
No codes are showing and no check engine light.
No codes are showing and no check engine light.
Team Owner
Joined: Aug 2004
Posts: 21,543
Likes: 3,216
From: Park City Utah
Race Director
Joined: Mar 2015
Posts: 15,926
Likes: 579
What is your engine temp on the digital when it does it? How many miles and how old are the o2s?
Last edited by antfarmer2; May 25, 2016 at 09:39 AM.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Every 2027 Corvette Engine Explained
Joe Kucinski
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette
Verdad Gallardo
10 Ugly Corvettes That We Still Kinda Love
Joe Kucinski
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
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
Race Director
Joined: Mar 2015
Posts: 15,926
Likes: 579
Race Director
Joined: Mar 2015
Posts: 15,926
Likes: 579
My 94 did the same thing I just lived with it. Strange thing once I changed the front two o2s it went away. Looking back it was about the time it would be going into closed loop. They do get old and slow. I believe they are normal maintenance others believe they last forever.
Last edited by antfarmer2; May 25, 2016 at 10:20 AM.
Team Owner
Joined: Aug 2004
Posts: 21,543
Likes: 3,216
From: Park City Utah
I'm not saying that it's not the O2's...it may be. But ex-x-fire is right that the O2's aren't 'in the game" when the engine is cold...and fuel needs to be extra rich.
Safety Car
Joined: Sep 2010
Posts: 3,752
Likes: 190
From: Indiana PA
I agree^ and on a 95 your MAF sensor is THE MAJOR player in determining commands for the fuel injectors. The 02's are for minor adjustments in the A/F. Make sure that it is clean and dirty free.
