My car stumbles, (maybe missfires) under certain conditions. For example cruising on the highway at 65 in 6th it is fine on a level surface, but an incline needing more power will cause it to stumble. There is not SES light flashing or constant. It also seems to run fine anytime it is NOT low rpm with a load. It runs good under normal driving or hard acceleration.
This started 4 weeks after a tune up (plugs, wires, Opti)
I have since: replaced the opti again
checked for arcing of wires (metal boot covers are gone)
replaced ignition coil
checked ignition control module ok at autozone
My suspicions are anything from fuel injectors, to o2 sensors, or pcm.
Could it be any of these?
Any ideas?
Always appreciate the input.
This started 4 weeks after a tune up (plugs, wires, Opti)
I have since: replaced the opti again
checked for arcing of wires (metal boot covers are gone)
replaced ignition coil
checked ignition control module ok at autozone
My suspicions are anything from fuel injectors, to o2 sensors, or pcm.
Could it be any of these?
Any ideas?
Always appreciate the input.
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