Vehicle is Oldsmobile Alero 2004, 3.4L V6, 160000 miles.
I’ve been having intermittent problems starting my car lately, maybe over the last month or so. What happens is when I turn it to Start it will crank and crank but not start. If I stop trying, wait a sec, then try again sometimes it works on the 2nd try, sometimes it takes 3 or 4 tries. I’ve never been unable to get it to start yet.
I didn’t think it was a battery/starter issue as it sounds normal just won’t start. The battery was old so I replaced it anyways but it didn’t make a difference.
It seems like it happens most often when its hot outside and I haven’t recently driven the car. If the car was driven recently and its hold or cold outside it always seems to start up effortlessly.
I have no noticeable drivability issues that I can tell. Also have no check engine light issues. Didn’t replace anything recently that would be related that I know of. I cleaned the throttle body to EGR port that was clogged and giving me PO401 a while back, but that was about 4 months prior to this problem starting so I doubt related.
From what I can tell from research theories are Fuel Filter (which has NEVER been replaced as far as I know), dirty fuel injectors (never been cleaned as far as I know), or faulty crankshaft position sensor.
Anybody have any ideas or recommendations? Any cleaner worth trying out as a first step? Any other likely cause of the problem?