Engine loses power and shuts off at a stop

Tiny
JAMIE MOORE
  • MEMBER
  • 2005 BUICK RANIER
  • 4.2L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 160,000 MILES
When running and come to stop it shuts off. It seems it is losing power also. What could cause to lose power and shut off when you stop?
Monday, December 11th, 2017 AT 5:28 AM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,230 POSTS
A plugged catalytic converter can cause a power loss.

https://www.google.com/search?q=2carpros+how+to+check+a+catalytic+converter&rlz=1C1PRFB_enUS461US461&oq=2carpros+how+to+check+a+cataly&aqs=chrome.0.69i59j69i57j69i64.7192j0j7&sourceid=chrome&ie=UTF-8

As far as the idle, the idle air control (IAC) is what maintains engine idle speed.

https://www.2carpros.com/articles/how-a-idle-air-control-valve-works
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Monday, December 11th, 2017 AT 6:47 PM

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