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try a new coilpack assembly ,,it worked for me I had a similar problem on my 87 Century 3.8l. My Cam Position Sensor was overheating which changed the voltage and kept the car from running. I diagnosed it by pouring some cold water on the sensor when the vehicle wouldn't start and when it did I knew it was that sensor. It could also have been the Crankshaft Position Sensor. I would have chilled it next to determine this. I would also test that the the Fuel Pressure is accurate. My fuel pump worked intermittently causing the car to be hard starting when hot. ( I replaced the fuel pump and then found out about the sensors.) Good Luck!

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19y ago
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15y ago

i had the same problem with my 97 lesabre. it ended up being the fuel pump relay which is located under the top rear engine panel, on the passenger's side under the hood. may be same problem with yours.

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11y ago

It may be that in attempting to start the engine, you have flooded the carburettor with petrol. In that case, taking into account the age of the car, the 30 minutes you state, is simply the time it takes for the fuel to drain away from the carburettor and fuel/combustion chamber. Of course, there are a lot of other reasons. Without further information on the car, indeed without hearing the engine as you try to start it, the answer already given is the simplest.

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Q: Why does my 95 Buick stall then won't start for a few minutes then run for days and then stall again?
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