2003 Buick Limited dies after warm

2003 BUICK LESABRE LIMITED
200,000 MILES • 3.8L • V6 • FWD • AUTOMATIC
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DUANE O
  • MEMBER
  • 2 POSTS
new fuel pump and filter starts runs till warm then idle will jump and down then dies well not start until cold?
Mar 23, 2015 at 12:24 PM
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JDL
  • CAR REPAIR CONTRIBUTOR
  • 16,098 POSTS
When the problem is ongoing. If it cranks good but won't start, have a helper crank it while you visually check for spark at the spark plugs. If spark everywhere, use a gage and check proper fuel pressure. Also, check fuel injector pulse.

When problem is ongoing check for rpm signal, comes from crank sensor.

Any other ideas, jump in.
Mar 23, 2015 at 3:22 PM
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DUANE O
  • MEMBER
  • 2 POSTS
You guys have no clue. It was the mass airflow sensor. I disconnected it car runs great
Mar 24, 2015 at 1:56 PM
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JDL
  • CAR REPAIR CONTRIBUTOR
  • 16,098 POSTS
Glad you got it going your way.
Mar 24, 2015 at 2:14 PM
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