Have 93 chevy lumina 3.4L. The engine cranks but won't start. This does not happen all the time. Sometimes I hear the fuel pump but either way it still does not start. I let it set for a little while and then it starts.....????

SOURCE: 93 Chevy Blazer S-10 4.3L F.I.

if this is the vortec engine you may want to check to confirm that the injector pot is working. The injector pot is located under the air intake manifold (top half only) & PLEASE BE SURE TO DISCONECT BATTERY FIRST. if you unbolt the top half of the intake manifold you will find the main injector pot otherwise known as the SPIDER. This part does have a history of failing and can be very costly to replace if you purchase it new. most junk yards should be able to find one for you.

SOURCE: 1995 lumina cranks but will not start

Sounds like it has jumped timing, dont know which engine you have so could be chain or belt.

SOURCE: Radiator Cooling fans pull or push air (93 Chevy Lumina 3.1 L) ?

A radiator fan is designed to pull air to pull air through the radiator to help cool it, while blowing the air on back across the engine to try to assist once again at keeping the unit running cool as to not over heat.

SOURCE: 93 chevy lumina euro cranks but wont start have spark and gas

if all the checks were done ! the pcm is bad

Ned C Cook

• 3433 Answers
• Posted on Jun 12, 2009

SOURCE: 93 chevy lumina crank sensor location

front of engine just about 11:00 over crank pullry