Re: Truck ran fine parked over night tried it woyldnt...
Did you get a no bus code on odomiter screen after turning on the ignition?check coil for rust and or cracks from swelling from rust also check to listen for fuel pump running befor turning over moter
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Most likely causes are bad engine coolant temp sensor OR leaking fuel injectors. Bad engine coolant temp sensor will give computer false reading and computer provides wrong air fuel mixture. Leaking fuel injectors will load the engine with raw gas--just like flooding it. Try pushing the gas pedal to the floor and holding it there when cranking when hot. That forces the computer into "clear flood" mode and it shuts off the injectors. If it starts up with pedal down, that would be a sign of leaking injectors.
I have exactly the same problem started last winter, ran fine all summer then as soon as it got below freezing again if I start it and run for 15 20 minutes wont restart I have to let it sit for 20 minutes or so and then it will start again. no codes and just turns over without starting. cant be fuel pump like i said had this problem last winter then ran fine all spring summer and fall! Anybody got the answer for this one??
mcdevito75 Here, It"s possible the ignition Module is going bad, no way to test and if so, one day the car will not start at all.----------It can also be a vapor loc, wher the fuel is evaporating before it reaches the cylinders. Best Bet, have your local shop check both these items.
had a 2000 blazer 4.3 wouldnt start in really cold enviroment..... ended up being the FUEL PUMP RELAY.... it still running good... bout every ther day or so... but it acted like your truck
your injector or fuel pump may be going out, next time when you check the issue, check your distubutor again and making sure you getting sparks, if you do have sparks than it has to be your fuel problems.
sounds like water ingress to either a control module or the coil pack, check all control box locations eg footwells for water and then check the engine bay for loose or naked wires, dry and clean and possibly cover with a plastic bag etc and it should be fine.
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