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www.cargurus.com > Questions > Chevrolet > BlazerCarGurusJan 30, 2013 - 96 Chevy S10 Blazer with 4.3 L engine vortex will turn over but won'tstart. ... i a 93 k5 blazer 5.7tbi in cold weather it will not start, if i hook jumper ... was told it just needed a Fuel pump, I replaced the Fuel pump, and the Filter, ...
use test light, connect clip on grnd. , touch tip on the starter wire while turning key , if it lights starter is faulty , no light, solenoid is faulty, if it lights and indicates starter is cause you can try to gently tap starter with plastic handle of screwdriver if tapping gets it moving then brushes in starter are dirty or near worn out hope this helps
sorry turns over means ZERO the crank shaft can spin or not the starter can in fact spin and crankshaft not. and some think turns over means, engine runs. now that fact makes turns over, a dead statement.
the word is cranks over, the engine cranks over robustlyl and then the engine runs. then runs for more that 3 seconds, and the ASD relay holds. (step by step his works like this ,93 to now)
wont crank ? (clear statement in fact) cranks ok, (crank shaft spins fast) can be seen and heard. runs for 3 seconds? and stalls (ASD relay drop out) can be seen. runs for 5min and stalls. (complex) runs for hours and stalls. (even more complex) all are key facts to the solution.
tell more..... tell all it does good bad or ugly for better suggestions!
i know industry jargon can be confusing, but lets try this. if it turns over but won't start, it could be your ''ignition module'' that sits on top of the vave cover on the motor or it might be the fuel pump or filter. make sure when you crank the engine that the key is all the way turned or it may not always make a proper contact to activate the ignition module. iv'e seen this before & had to change the ignition switch & all worked ok after that. i would need to know engine lt size to give you more details on the matter. please get back to me.
When you say it won't start, do you mean it cranks but won't fire, or it just won't crank? If it just won't crank, you could be having an issue with the starter relay. The often become intermittent before failure. Many owners do not know there is a starter relay because it was added as a recall item i order to protect the iginition switch from burnout. The starter relay is located in the very front of the engine compartment, just to the left of the battery, on the back side of the radiator crossmember.
Check timing belt. Remove the oil filler cap and look at the rocker arm. If you get someone to turn the engine while you watch and you see no movement... it's a broken belt. If you see movement, perhaps the belt has slipped. Replace belt and re time.