Idle problems after header install.
Thread Starter
On The Tree
Joined: Mar 2010
Posts: 108
Likes: 0
From: Amarillo, Texas
Idle problems after header install. Got my headers on early Friday morning after pulling an all-nighter getting them on.
Everything went well and changed motor mounts, plugs, and tranny mount aswell. But I do have a couple concerns.
Right now there open headers as no exhaust shop is open this weekend. But when I'm out cruising and start coming to a stop from any speed, and I push in the clutch and let the car be in neutral as I come to a stop the idle drops. When I'm slowing down the idle will drop to 300-500 rpm and struggle to stay alive. Once I come to a complete stop it will take a couple of seconds for the idle to smooth out and run evenly at 750 rpm again.
Any idea what is causing this? And do many of yall run your plug wires without heat shield without any problems? There were no heat shields on the car before this and everything seemed fine. There is a good half inch to an inch of space between the primaries and the wire but it still worries me.
Any input would be greatly appreciated.
Everything went well and changed motor mounts, plugs, and tranny mount aswell. But I do have a couple concerns.
Right now there open headers as no exhaust shop is open this weekend. But when I'm out cruising and start coming to a stop from any speed, and I push in the clutch and let the car be in neutral as I come to a stop the idle drops. When I'm slowing down the idle will drop to 300-500 rpm and struggle to stay alive. Once I come to a complete stop it will take a couple of seconds for the idle to smooth out and run evenly at 750 rpm again.
Any idea what is causing this? And do many of yall run your plug wires without heat shield without any problems? There were no heat shields on the car before this and everything seemed fine. There is a good half inch to an inch of space between the primaries and the wire but it still worries me.
Any input would be greatly appreciated.
i believe lack o back pressure is causing your idle problem. i bet $100 when you get exhaust on it shell idle like normal again.
ive run msd wires with no heat shields for the better part of 4 years now without a hic up. just make sure you hear them click on twice when you attatch them to the coils
ive run msd wires with no heat shields for the better part of 4 years now without a hic up. just make sure you hear them click on twice when you attatch them to the coils
Launching!
Joined: Mar 2008
Posts: 274
Likes: 7
From: Omaha, NE
Had the same problem with my open headers after install, put my y pipe and catback on and it still runs rough sometimes at idle but I think its because I need to get it tuned. So if its still not running smooth after the exhaust is put back on, might wanna hit the dyno.
i drove mine couple of miles with open headers..going to the exhaust shop that is lol and it did the same thing, its def. to lack of back pressure. you can say nothing till you get your exhaust done am sure it will drive fine. do you have your O2s installed? just curious.
Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?
Pouria Savadkouei
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
