General Maintenance & Repairs - My car won't crank half the time, other times it will...

My check engine light is on but I've been driving it for a while anyways:o

Now my car won't crank half the time. It will turn over, but it won't crank. Other times it just cranks right up. It usually won't crank if I drive it for a while, let it sit a few minutes, then try cranking it. But lately it hasn't cranked even when its cold

There is no problem when I'm actually driving the car, no lag, no putters, nothing.

Any help would be AMAZING.

Sounds to me like a cam sensor or crackshaft sensor. Mine had this problem a few weeks ago and it was the cam sensor. Get the code scanned to find out what it is. Cam Sensors will cause hard starting and mine would turn over but wouldn't crank. Just a thought.

po135 o2 sensor
p0137 02 sensor
p0155
p1133
p1416 secondary air pump

Im guessing the air pump is setting of the other codes?

You know that you can get a code reader for about $60 bucks, cheaper sometimes. Plugs right in under the dash. There's no magic about it. Everyone should have one.

try swapping one of your FAN RELAY fuses under the hood for the IGN fuse. Mine was doing the same thing. Couldnt figure it out for the life of me. You cant see inside the fuse. (big grey cube one) You would think that a fuse would go bad all at once, but I could only start my car about every 10 turns or so. Im no expert but it might be worth a try.