1999 Chevy Camaro Misfires

1999 CHEVROLET CAMARO
156,000 MILES • 6 CYL • 2WD • MANUAL
Avatar
JEEPGUY12
  • MEMBER
  • 1 POST
Since I got this car it has stumbled some times not very often under heavy acceleration. But not enough for me to think much of it. But a couple of weeks ago when i got under the car i found a spark plug wire had the insulation ripped off exposing the metal wires. So i had to temporary fix it with a wire that was laying around in the garage. it barely fit the car. I drove with it for for 2 weeks but a couple days after i did that it started to miss really bad accelerating very bad stumbling even at high rpms it sputters. But its not thowing check engine codes. I replaced the spark plugs and wires very carefully torgued them down to the correct amount. I made sure i didnt cross the wires up. It doesnt do it idleing and since i replaced the plugs it has gotten worse and does it somewhat with no load while revving engine.
Jul 19, 2010 at 10:29 PM
Advertisement
Avatar
RASMATAZ
  • ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic
Engine running rough or misfiring can be cause by the following:

1.Defective spark plug
2.Inadequate spark/coil,defective spark plug wire.
3.Lack of compression
4.False air leakage.
5.Faulty fuel injectors.
6.Insufficient fuel pressure.
7.Contaminated fuel.
8.EGR valve that is leaking.
9.Oxygen sensors.
10.Throttle position sensor.
11.Idle air control valve.
Jul 19, 2010 at 10:42 PM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.