2009 Saturn Aura Repair Question
My car seems to studder while gently accelerating?
Asked by TmckenzieAnswer
Is it worse with the ac on?Also have you checked for codes i kniw you said you dont have any but did you check for any?
I checked it for codes today, it didn't have any. I haven't checked with ac off. I will
If its worse with ac off its most likey a ignition issue spark plugs failing coil etc.
I just drove it and it seems to bit worse with the ac off, it shutters more frequent. I also forgot to mention when I pulled the injectors one of them came out pretty tuff and the nozzle looked a bit burnt, the others looked nice and clean. How can I test the coil packs? And would one be going bad without throwing a check engine with a code?
Iam sorry i ment to say if it was worse with the ac on?So is it worse with the ac on?Also if one of the injectors tips looked burnt that would be a dirty injector since there is really nothing at the tip of the injector to be burnt.I have bad coils set codes and have also seen them not set codes.
Is there a way I can test the coil packs?
I drove it again and yes your right its more pronounced with the ac on. I can feel it when it's off, but turned back on its much more noticeable.
I posted a trouble tree for the ignition system dont replace anything just follow the trouble all the way down.That way you can test the wires etc.Heres the problem with a problem like your having it is a coil issue which we dont know that it is.Its only failing under load i also dont put much faith in testing the coil with a ohms meter.My sisters honda had no spark only had one coil it tested good ohms wise.Found a plused trigger to the coil so i new the coil was bad.It sounds like a coil issue since with the air on it cuts out worse.Most of the ones i have seen like that turned out to be a ignition issue.I would also check the spark plugs visually look at them for cracks black carbon etc.
