i have a 95 ford bronco EL 4WD W/147.000 miles on it. Starts in all weather cond

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I have a 95 ford bronco EL 4WD W/147.000 miles on it. Starts in all weather conditions, drives 1/2 to 2 miles to a store. I then try to restart 1-2 min later it wont start up. it will restart after waiting about 45 mins? shop has confirmed all is ok ( crank, new battery, lights electrical system etc..). It has a new distributor. It has been in the shop several times without repair! Any idea why this continues to happen??