Generation III External Engine LS1 | LS6 | Bolt-Ons | Intakes | Exhaust | Ignition | Accessories
Sponsored by:
Sponsored by:

Ignition problems - idle and low rpm issues

Thread Tools
 
Search this Thread
 
Old 09-28-2009, 09:57 AM
  #1  
TECH Enthusiast
Thread Starter
iTrader: (6)
 
Ryanmgaspard's Avatar
 
Join Date: Nov 2006
Location: Pineville, LA
Posts: 605
Likes: 0
Received 0 Likes on 0 Posts
Default Ignition problems - idle and low rpm issues

Just replaced plugs and wires and still has same problem. It only occurs under 2,000 rpms and not all the time. Sometimes the idle will drop to 500 for a few seconds then go back up. In first gear ONLY, under 2000 rpms, I will press the gas but it will hesitate and stutter for a few seconds then take off like normal. Cylinder 4 had a cracked plug when I replaced it. No engine light or flashing engine light ever. 02 SS 6 speed, around 80k miles. Fuel filter and air filter were replaced 6 months ago. Air filter is a Fram Air Hog. Cleaned the MAF and other sensors nearby and same issues. What's next step? Coil, O2, or bad sensor somewhere?
Old 09-29-2009, 08:31 AM
  #2  
TECH Enthusiast
Thread Starter
iTrader: (6)
 
Ryanmgaspard's Avatar
 
Join Date: Nov 2006
Location: Pineville, LA
Posts: 605
Likes: 0
Received 0 Likes on 0 Posts
Default

anybody? It does it in all gears now under 2k rpms with light throttle.
Old 09-29-2009, 08:18 PM
  #3  
Registered User
 
VoggsStage1's Avatar
 
Join Date: Sep 2009
Location: Pittsburgh
Posts: 10
Likes: 0
Received 0 Likes on 0 Posts
Default

Do u have a misfire or a hesitation?
Old 09-30-2009, 01:09 AM
  #4  
12 Second Club
 
breze84's Avatar
 
Join Date: Apr 2009
Location: Chicago, IL
Posts: 815
Likes: 0
Received 2 Likes on 2 Posts
Default

Make sure your TB is not hanging up and you dont have any vacum leaks.... Seems like you covered the obvious could be problems already, Really hard to say without actually seeing your car....
Old 10-01-2009, 01:14 PM
  #5  
On The Tree
iTrader: (5)
 
500@10psi's Avatar
 
Join Date: Oct 2006
Location: oh.
Posts: 176
Received 6 Likes on 4 Posts

Default

had similar problem turned out to be engine sensor fuse under the hood. that is the curcuit for all of the o2s maf and other open loop sensors. lil 20 amp caused all sorts of weird problems.
Old 11-02-2009, 07:42 PM
  #6  
TECH Enthusiast
Thread Starter
iTrader: (6)
 
Ryanmgaspard's Avatar
 
Join Date: Nov 2006
Location: Pineville, LA
Posts: 605
Likes: 0
Received 0 Likes on 0 Posts
Default

Replaced all the coils and the miss is still there. I looked towards the back of the intake where the connection for the AIR system is on the driver's side and the top little tube isn't plugged up. I'll try plugging it.




All times are GMT -5. The time now is 07:58 PM.