Code 42

1989 BUICK LESABRE
134,000 MILES • 6 CYL • 2WD • AUTOMATIC
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FORD1956
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  • 1 POST
1989 Buick LaSabre - code 42
Jan 20, 2011 at 6:44 PM
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DOCFIXIT
  • ✓Experienced Mechanic
  • 18,828 POSTS
Pull DIST cap look for cracked insulation or loose wires if good suspect faulty module
Jan 21, 2011 at 10:16 AM
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MR TOM
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  • 12 POSTS
42 The EST signal did not change when the ECM applied bypass voltage to the ignition module. No cap on this engine!
Feb 20, 2011 at 7:33 AM
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