Check the coil and the ignition module in the distributor as it may be a unit overheating and breaking down electrically.
SOURCE: Truck will crank and then shut off
You will need to do your testing while the vehicle is in failure to start mode.Check wether the coil is recieving 12v and pour a little fuel down carb to see if it wants to run.If pouring a little fuel down carb makes the car try to fire up you probably have a fuel pump issue.If it doesnt try to fire you have an ignition problem.Hope you get it sorted and good luck.
SOURCE: I Have a 2002 blazer that starts but motor dies, surges when accelerating
If this engine is a VORTEC then you may have a problem with the internal fuel system. Under the top plenum there is a fuel reg and poppet valves that inject fuel into the cylinders. Sometimes the tubes that run fuel from the reg to the valves can leak and cause your problem. This cannot be found with pressure check because this occurrs after the reg. PS fuel mileage will go down. Let me know if this helps.Moe
SOURCE: 94 s10 blazer dies when put into gear
Sounds like a vacuam leak, best thing to use is cold start spray, by spraying the vacuam lines with this you will notice a change in the idle wherever the leak is at.
SOURCE: It starts fine, runs good until the engine heats u...
Check to see if the radiator fan is coming on when the van gets hot.If it does not then on a 2.6 liter engine.look on the bottom part of the radiator on drivers side for a fan switch that could be bad and not letting the radiator fan to come on. On a 3.0 liter engine the coolant temperature sensor is screwed into the thermostat housing. And on a 3.3 liter and on a 3.8 liter engine the coolant temperature sensor is screwed into the front cylinder head. Anyone of these can cause the van to run hot and eventually die with no restart until the temperature has cooled down. Check the fan first with two jumper wires from the positive/negative post to the fan connector on a 2.6 liter engine (positive wire to open pin on plug,negative wire to insulated plug side. On all v6 engines hook jumper wires to motor. To the left side will be positive and negative to the right. Do not let both wires touch together while testing. If motor does not respond to direct wiring then replace it. Another thing to look at is the catalytic converter on van. Check the exhaust flow when the van is running cold and again when it gets hot. If the flow starts to slow down when the van gets hot then remove the converter(plugging up). After doing that run the van again to see if the van runs ok. Hope this will help you.
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