LT1 cutting out at high rpms
Thread Starter
TECH Apprentice
Joined: May 2005
Posts: 325
Likes: 0
From: Cali & Nevada
LT1 cutting out at high rpms i have a problem with my car when i get around 5,000 rpms the car starts cutting out and it will start making a fast poping sounds out of the mufflers hich means that its miss firing right? so what do you guys think the problem is?
spark plug wire?
spark plug wire?
It could be a plug wire, but I'm going to lean more to either the coiol ot the opti. First (and free) make sure your plugs are all in good. I had the #1 almost come out on me and it created a misfire like condition. Arc out the wires and make sure you're getting spark on all 8 and the coil before you change the opti.
Teching In
Joined: Aug 2006
Posts: 7
Likes: 0
From: Columbia S.C.
I had a similar issue with my 94z28, It was a combonation of cocrosion on the inside of the coil wire and coil post corosion, also I found later that the red wire on the harness that atatches to the coil had a break in it, the wire was just kinda mashed together, fixed that and never had anymore problems with ignition
Misfire I just went through the same problem. Is the car running ok when your at lower rpms ? if so then the problem is your coil. I just replaced mine and it solved the problem.Bought one at Oriely's for 14 bucks. I had replaced my Opti, plugs, and wires but it turned out to be the coil.
