[:@] I have an "87" Coupe de ville, 100,000 miles. In the las t2 days the engine will cut out while driving and it is only the engine that is cutting out. The dash is still lit up like nothing is wrong. Digital read-out is showing speed,ododmeter is still readingm fuel in tank etc. Engine warning light never comes on. The only way the driver knows what happened is the power steering gets stiff and the gas pedal isn't responding. Car will restart while letting it coast. Engine doesn't sputter, no rough idle, etc. I'm thinking electrical. Where should I begin to look. Ignition switch or computer or ....
Thanks

 

It appears that someone responded to your same question in off topic. Check it out.

 

Check for codes and post E codes. Check grounds near alternator.Check fuel pressure 9-13 psi and holds when engine is turned off for atleast 1 min. Check for spark with tester. If no codes are stored, fuel pressure is ok, and ignition passes spark tester I would suspect ignition module.

 

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