Yesterday I checked the code to find out why my 1993 Blazer would just start running like it was not getting enough fuel. Code said 34, MAP sensor. On my way home from work last night it just died. When I try to start it, it just turns over, as if it isn't getting any fire, or fuel, I don't know which. I have no idea where to start. I replaced the MAP sensor. No luck.

 

The first thing i would do is to check for spark, you can get a spark tester about any auto zone or advanced Auto. they are about 6-10 bucks and pull your number one spark plug wire and connect between the two have someone turn the motor over and watch for spark. If your getting spark then I would check for fuel. Not sure which motor you have but if you follow your fuel rail should be a check valve looks like a valve stem on your tire only bigger. turn your key on and put lie a screw driver and push the little release valve and see if fuel shoots out.