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2003 Buick Limited dies after warm

Tiny
DUANE O
  • MEMBER
  • 2003 BUICK LESABRE LIMITED
  • 3.8L
  • V6
  • FWD
  • AUTOMATIC
  • 200,000 MILES
New fuel pump and filter starts runs till warm then idle will jump and down then dies well not start until cold?
Monday, March 23rd, 2015 AT 12:24 PM

3 Replies

Tiny
JDL
  • MECHANIC
  • 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.
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Monday, March 23rd, 2015 AT 3:22 PM
Tiny
DUANE O
  • MEMBER
  • 2 POSTS
You guys have no clue. It was the mass airflow sensor. I disconnected it car runs great
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Tuesday, March 24th, 2015 AT 1:56 PM
Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
Glad you got it going your way.
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Tuesday, March 24th, 2015 AT 2:14 PM

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