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Re: 1988 dynasty dies
You will get better guesses if we know which engine it has; the 4 cyl with TBI, or the 6 with MFI?
When you say it wont start - do you mean starter cranks the engine right away - but it doesnt fire up? Or does the engine not crank over for the first few minutes?
If the former, then in both cases I would personally suspect the ignition modules if they are original. And if its the 4 cyl; can you see fuel spraying from the TBI injector with the air cleaner off? If its the 6 cyl, is there a way to check fuel pressure in the fuel rail? When was the last time the fuel filter ws changed?
If the driver carries a spare spark plug along, then the next time it dies on the highway, pull a plug wire off and put the spare spark plug into it, lay the plug on the metal of the motor, and crank the engine with the starter. Look for a nice blue spark.
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