Motor Age Garage

Contributing Editor Mark Giammalvo tackles an intermittent problem on a Buick LeSabre that has taxed the owner's patience for the last time.
Phantom StallWHAT A HEADACHE
VEHICLE: 1994 Buick LeSabre Custom
DRIVETRAIN: 3.8 liter six-cylinder with four-speed A/T
MILEAGE: 117,061
COMPLAINT: Intermittent stalling and rough running.
(Photo: Mark Giammalvo)What can a tech do when an intermittent problem refuses to be duplicated in the bay?

Probably one of the worst service problems you will ever encounter is a vehicle with an intermittent symptom. Worse yet is a vehicle with an intermittent stall condition. In fact, not many other problems will upset a customer more than a car that intermittently stalls. 

Several years back, General Motors coined the phase:

About the Author

Mark Giammalvo

Mark Giammalvo

Mark Giammalvo specializes in driveability diagnostics at his family
Sign up for our eNewsletters
Get the latest news and updates