Hello,

I have an 01 Blazer 4wd LT. I went outside to start the red dragon(yes its what i call this blazer), it tried to start, but the starter was bad. Put a new starter on and it started..waited a day or two let it go outside and it wouldn't start. It just turned and tried to start. Well I changed the battery since it was bad. Wouldn't start, just turns. Changed the ignition coil since it shocked the **** out of me. Still wouldn't start. So finally dropped the tank and changed the fuel pump..it started. Now a couple days go by, i let it sit outside and it just turns over and over. What am i missing? I've hooked it to a code reader and nothing is spiting out. At this point I am lost on where to look.

Note: At one point, the blazer would start fine if I left it in the garage, if I left it outside over night in the cold, it wouldn't start.

 

I forgot to add, it does crank.

 

...did you change the fuel filter too?

 

Sorry it took so long to get back to. I changed it today. I am letting it sit in the cold and see if it starts tomorrow.

If not where do I look next?

 

 

How cold is cold? Sounds like the fuel is freezing.

 

 

Howdy,
To split the problem between ignition and fuel, I'd take a try to inject the "engine starter" in aerosol directly to a throttle while cranking. If it cranks - You have the fuel related problem. Otherwise it's ignition.

 

 

When you are having the crank but no spark condition check to see if you have 1" of strong blue spark.

George