1989 Pontiac Firebird ecm

1989 PONTIAC FIREBIRD
89,000 MILES • V8 • 2WD • MANUAL
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JUSTAHDMAN
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  • 2 POSTS
yes could someone help was driving and car started bucking wanted to stall was ok when taking off but wanted to stall when came to stop idle is up and down checked code and is 42 replaced cap,rotor,plugs,module still not running right, any ideas
Jun 12, 2010 at 11:55 AM
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DOCFIXIT
  • ✓ASE Certified Mechanic
  • 18,828 POSTS
  • ASE Certified Mechanic
May not be ECM but ignition module inside DIST see diagram


https://images.2carpros.com/forum/automotive_pictures/198357_Graphic_477.jpg

if open or short in 423 will set 42 code. Much cheaper than ECM to replace.
Jun 12, 2010 at 12:48 PM
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