Running a 3400 (LA1) with DIS / 7730 ECM. Last couple weeks while driving, engine just suddenly quits. Starts up, goes for a bit, then quits. Same behavior parked in the garage. Swapped in a new ICM, as same problem a year ago when alternator went and took out ICM with it. New in the last year: all 3 coils and ignition wires, ICM (this week), CPS. Fuel pressure reads 50psi on the rail even when it quits.
Tuner Pro tracings attached. 1st and 3rd run show the intermittent quitting. 2nd run ran for several minutes without a problem.
Would appreciate thoughts on how to chase down the problem!
Tuner Pro tracings attached. 1st and 3rd run show the intermittent quitting. 2nd run ran for several minutes without a problem.
Would appreciate thoughts on how to chase down the problem!
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