Hesitation???
Thread Starter
Instructor
Joined: Feb 2003
Posts: 163
Likes: 0
From: Pollock La
Hesitation???
Hey all,
Thought maybe someone out there could possibly help me out.
I have what you would call a hesitation just from idle.
If I stomp on it from idle it bogs down(hesitates)then catches back up, But if I ease the pedal down to maybe raise the rpms to 700-900 then stomp on it its fine.
I had programmed the car with the hypertech programmer a month ago, but today I brought it back to stock to see if it would help, and actually it seems worse(guessing because my idle rpms are lower).
I was thinking maybe bad gas(acts like it somewhat)
Maybe a fuel pump going out.
or plugs and wires.
It only does it from an idle state and thats what is confusing me.
any help would be appreciated
Thx
Thought maybe someone out there could possibly help me out.
I have what you would call a hesitation just from idle.
If I stomp on it from idle it bogs down(hesitates)then catches back up, But if I ease the pedal down to maybe raise the rpms to 700-900 then stomp on it its fine.
I had programmed the car with the hypertech programmer a month ago, but today I brought it back to stock to see if it would help, and actually it seems worse(guessing because my idle rpms are lower).
I was thinking maybe bad gas(acts like it somewhat)
Maybe a fuel pump going out.
or plugs and wires.
It only does it from an idle state and thats what is confusing me.
any help would be appreciated
Thx
Le Mans Master
Joined: Apr 2000
Posts: 6,341
Likes: 1
From: Shelton CT
Re: Hesitation??? (Mark1376)
It sounds like a fuel pump going south...
I say always start with the easy things to replace.. A Fuel pump is usually pretty cheap, and cna be replaced even by a non professional within an hour, or if you are like me, someone who had NO idea how to do it, took 2 hours and I did it in my driveway 2 years ago..
My symptoms were during driving it was 'ok', but once I got to idle at a stop, it wanted to stall. I had to drive with brake and gas at the same time..
[Modified by MrNuke, 7:31 PM 4/28/2003]
I say always start with the easy things to replace.. A Fuel pump is usually pretty cheap, and cna be replaced even by a non professional within an hour, or if you are like me, someone who had NO idea how to do it, took 2 hours and I did it in my driveway 2 years ago..
My symptoms were during driving it was 'ok', but once I got to idle at a stop, it wanted to stall. I had to drive with brake and gas at the same time..
[Modified by MrNuke, 7:31 PM 4/28/2003]
Advanced
Joined: Apr 2003
Posts: 60
Likes: 0
From: Pollock la
Re: Hesitation??? (MrNuke)
It idles perfectly fine, never tries to die at all. I could sit all day at idle and it never miss(that I can hear or feel) its just when I punch it from idle it bogs down.
Still maybe the fuel pump?
Still maybe the fuel pump?
Advanced
Joined: Apr 2003
Posts: 60
Likes: 0
From: Pollock la
Re: Hesitation??? (cprgmr)
Thx for the replies
as far as I can tell the wires are fine(look like the original wires but not anywhere near the headers or melted).
Looks like its time for some Plugs and wires anyways so im gonna get that done regardless if its the problem or not.
then next the fuel pump, and filter I guess
[Modified by Mark13760, 7:11 PM 4/28/2003]
as far as I can tell the wires are fine(look like the original wires but not anywhere near the headers or melted).
Looks like its time for some Plugs and wires anyways so im gonna get that done regardless if its the problem or not.
then next the fuel pump, and filter I guess
[Modified by Mark13760, 7:11 PM 4/28/2003]
Team Owner
Joined: Sep 2001
Posts: 62,180
Likes: 1,740
From: Athens AL
C7 of the Year - Unmodified Finalist 2021
C4 of Year Finalist (performance mods) 2019
Re: Hesitation??? (Mark13760)
Id do a full tune-up, plugs/wires/dist cap/rotor before doing the fuel pump AND do the fuel filter.
Advanced
Joined: Apr 2003
Posts: 60
Likes: 0
From: Pollock la
Re: Hesitation??? (vader86)
First things first, I took it in and right off they found a Vacuum leak at the little elbow looking hose, it was dry rotting and coming apart, lmao gonna take 4 days to get one here.
Not sure if it will fix the problem, but sure couldnt have been helping none.
They checked the plugs and wires and all that looked good.
opti spilled from his lips if this doesnt fix it, but hes pretty sure it will.
Not sure if it will fix the problem, but sure couldnt have been helping none.
They checked the plugs and wires and all that looked good.
opti spilled from his lips if this doesnt fix it, but hes pretty sure it will.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
5 Best & 5 Worst Corvette Daily Drivers
Joe Kucinski
The Headlights of Every Corvette Generation Explained
Joe Kucinski
5 Best & 5 Most Overrated Corvette Track Packages of All Time!
Joe Kucinski
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
Instructor
Joined: Apr 2003
Posts: 112
Likes: 0
From: Front Royal VA
Re: Hesitation??? (Mark1376)
Just went thought the same problem on my 86. Drove me nuts. Here's the low cost approach:
1) Dump bottle of dry gas into to fuel tank to remove water.
- Test Car - If Not fixed:
2) Change Fuel Filter
- Test Car - If Not fixed:
3) Check inside distributor cap for any abnormal firing signs. Replace cap & rotor
- Test Car - If Not fixed:
3) Check all spark plug wires. Give em the "wiggle test". Wiggle the wires while car is running. (Be careful !)
- Test Car - If Not fixed:
4) Replace any defective or suspicious wire
- Test Car - If Not fixed:
5) Replace plugs
- Test Car - If Not fixed:
Sell car on Ebay for big bucks! Or take it to a professional mechanic.
Steps 1-4 will cost you ~ $75 and if you haven't replaced those things in a while, you should anyway.
Mine was fixed on step 4, but I did the plugs anyway. Had bad gas, filter & wire :(
Good luck!
1) Dump bottle of dry gas into to fuel tank to remove water.
- Test Car - If Not fixed:
2) Change Fuel Filter
- Test Car - If Not fixed:
3) Check inside distributor cap for any abnormal firing signs. Replace cap & rotor
- Test Car - If Not fixed:
3) Check all spark plug wires. Give em the "wiggle test". Wiggle the wires while car is running. (Be careful !)
- Test Car - If Not fixed:
4) Replace any defective or suspicious wire
- Test Car - If Not fixed:
5) Replace plugs
- Test Car - If Not fixed:
Sell car on Ebay for big bucks! Or take it to a professional mechanic.
Steps 1-4 will cost you ~ $75 and if you haven't replaced those things in a while, you should anyway.
Mine was fixed on step 4, but I did the plugs anyway. Had bad gas, filter & wire :(
Good luck!
Advanced
Joined: Apr 2003
Posts: 60
Likes: 0
From: Pollock la
Re: Hesitation??? (DelcoVette)
Glad you got yours fixed,
Car has 75,000 on it(I only have had car for the last 5,000 miles), but the Chevrolet guy said the wires and plugs had been changed not to long ago and looked great.
What Ive done so far............
Returned back to stock with hypertech programmer
Added water remover to tank
Plug wires checked
Plugs checked
They found a vacuum leak(wires, plugs, and vacuum leak done by a Chevrolet dealership)
Hose is costing me 5.00 but gonna take 4 days to get here.
If not the vacuum leak then they say opti, but before they do that they WILL be changing the Plug wires, plugs, and the fuel filter if it needs it or not because I said so!
They also rigged the hose so I could get home, then when I got home I rigged it better, seems to me it helped alot, but that could be wishful thinking.
If its the opti i dont have a problem paying for it(probably due), just dont want to pay for an opti only to find out it was a fuel pump!
[Modified by Mark13760, 8:11 PM 4/29/2003]
Car has 75,000 on it(I only have had car for the last 5,000 miles), but the Chevrolet guy said the wires and plugs had been changed not to long ago and looked great.
What Ive done so far............
Returned back to stock with hypertech programmer
Added water remover to tank
Plug wires checked
Plugs checked
They found a vacuum leak(wires, plugs, and vacuum leak done by a Chevrolet dealership)
Hose is costing me 5.00 but gonna take 4 days to get here.
If not the vacuum leak then they say opti, but before they do that they WILL be changing the Plug wires, plugs, and the fuel filter if it needs it or not because I said so!
They also rigged the hose so I could get home, then when I got home I rigged it better, seems to me it helped alot, but that could be wishful thinking.
If its the opti i dont have a problem paying for it(probably due), just dont want to pay for an opti only to find out it was a fuel pump!
[Modified by Mark13760, 8:11 PM 4/29/2003]
Advanced
Joined: Apr 2003
Posts: 60
Likes: 0
From: Pollock la
Re: Hesitation??? (Strick)
not sure if on same opti, I only have had the car for 5,000 miles and can't contact the seller anymore to find out.
Wasnt one of the things he mentioned as being done to the car though.
Wasnt one of the things he mentioned as being done to the car though.