Ignition problems - idle and low rpm issues

Ryanmgaspard · 09-28-2009, 10:57 AM

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?

Ryanmgaspard · 09-29-2009, 09:31 AM

anybody? It does it in all gears now under 2k rpms with light throttle.

VoggsStage1 · 09-29-2009, 09:18 PM

Do u have a misfire or a hesitation?

breze84 · 09-30-2009, 02:09 AM

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....

500@10psi · 10-01-2009, 02:14 PM

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.

Ryanmgaspard · 11-02-2009, 08:42 PM

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.