car stumbling bad
Thread Starter
Launching!
Joined: Feb 2005
Posts: 229
Likes: 0
From: Camp Lejeune, NC
car stumbling bad my 95 z has developed a nasty habit whenever you come to a stop it surges and stumbles real bad unless you put it in neutral then it only does it a little. when driving there's a little surge but it only gets real bad when you come to a stop and idle, any ideas?
Trending Topics
On The Tree
Joined: Feb 2005
Posts: 116
Likes: 0
i know everyone hates when its said BUT: Optispark.
mine did the EXACT same thing, no SES lights. every time i had to stop at a light i thought the car was going to blow up from the way it was acting. if i put it in neutral it wouldnt be as bad but it was still there.
at first i thought it was maybe a bad o2 or the fuel filter, i changed those out and it still ran like ****. i went through the car and couldnt find anything wrong. my last ditch effort was the opti. sure enough it was, i replaced it and it runs perfect again.
mine did the EXACT same thing, no SES lights. every time i had to stop at a light i thought the car was going to blow up from the way it was acting. if i put it in neutral it wouldnt be as bad but it was still there.
at first i thought it was maybe a bad o2 or the fuel filter, i changed those out and it still ran like ****. i went through the car and couldnt find anything wrong. my last ditch effort was the opti. sure enough it was, i replaced it and it runs perfect again.
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
Five Reasons the Camaro Was the Most Pivotal Player in the Pony Car Wars 2.0
Brett Foote
10 Reasons the LS7 Is GM's Most Extreme Naturally Aspirated V8 Engine Ever
Verdad Gallardo
On The Tree
Joined: Feb 2005
Posts: 116
Likes: 0
there really isnt a cheap opti. mine cost around 400 when i replaced it. check your water pump also. mine went bad and caused the opti to take a crap.
if your going to do it yourself make sure you have plenty of time to do it. its a pretty long drawn out process to do it.
check here for a few good writeups for how to install it yourself http://www.bfranker.badz28.com/fbody/Guides.htm
if your going to do it yourself make sure you have plenty of time to do it. its a pretty long drawn out process to do it.
check here for a few good writeups for how to install it yourself http://www.bfranker.badz28.com/fbody/Guides.htm
On The Tree
Joined: Nov 2004
Posts: 119
Likes: 0
$400 for an opti? Yikes!! 
If you are going to pay that much then get the MSD version for $500. Or do like I did and call up Jason Cromer at Sam Taylor Buick and get a vented one for $195. And I found out that wasn't even the problem.
This can be caused by several things. In my case the ground had come loose on my ignition box. It could also be plug wires, or other related things. If it happens while driving it could be the EGR valve. Try to eliminate the easier and cheaper items first. I would start with the plug wires.
If you are going to pay that much then get the MSD version for $500. Or do like I did and call up Jason Cromer at Sam Taylor Buick and get a vented one for $195. And I found out that wasn't even the problem.This can be caused by several things. In my case the ground had come loose on my ignition box. It could also be plug wires, or other related things. If it happens while driving it could be the EGR valve. Try to eliminate the easier and cheaper items first. I would start with the plug wires.
TECH Apprentice
iTrader: (1)
Joined: Jan 2005
Posts: 305
Likes: 0
From: Las Vegas.. back in san jose..
i got just the cap and rotor kit from MSD for 150 and i am doing it tomorrow....well see if only changing the cap and rotor will fix my problem..but i got mine from summit...
Launching!
Joined: Sep 2005
Posts: 213
Likes: 0
From: Detroit
my car is kinda having that same problem click here
https://ls1tech.com/forums/showthrea...17#post3871717
https://ls1tech.com/forums/showthrea...17#post3871717
