My truck would start but would die after 5 sec.. change the ignition module, new computer, new cap and rotor, coolant sensor, found no trouble codes from the reader..I am completly lost here..does anyone else know what the problem is......It starts but it just keeps dying after i turn the ignition and engine starts..
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CK your distributor rotor ....pull it off and look in side the hole where it fit on the distributor shaft if it really black in side replace it . If OK then either your ignition module ( inside the distributor a little black block with wires going to both end of it ) or the Stator inside the distributor has shorted out . The stator is kinda hard to change if you don't have the right tools . i think rebuilt distributors from the parts store have gotten a lot cheaper then they use to be ; you may want to change the whole thing a new one will come with a new module and stator
1st, check to see if the fuel pump runs for 3 seconds when you turn the key to run (not start). If it doesn't run, then check the fuel pump fuse & relay in fuse box under hood, if OK, (spray starting fluid in the intake to see if engine fires at all), if no fire then look towards the ignition as the problem. There are 5 things need to start an engine: 1. fuel (delivered & pressure), 2. air, 3. spark (distributor/ignition module or pickup coil), 4. rotation & timing, 5. compression. any of these that are wrong or not there, the engine fails.
I WOULD CHECK IGNITION FUSE TO SEE IF POWER GOING TO COILS AND IGNITION MODULE. REPLACE DISTRIBUTOR CAP AND ROTOR.HAVE IGNITION TIMING CHECK.DISTRIBUTOR CAN SLOWLY WORK A LOOSE JUST A LITTLE TO THROW OFF IGNITION TIMING SO PLUGS WONT GET NO SPARK.