1992 Buick Regal poor running

Tiny
NICKY42
  • MEMBER
  • 1992 BUICK REGAL
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 150,000 MILES
3.8 liter has poor idle rough anything above idle engine runs smoothe after highway driving and coming to stop will some times die but easy to restart?Have changed plug wires and plugs already
Tuesday, February 19th, 2008 AT 2:00 AM

2 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Do you have a check engine light or has flashed before?

Check the idle air control valve/throttle position sensor and the exhaust gas recirculation valve EGR-

Might also want to check for an exhaust restriction to rule out the catalytic converter.
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Tuesday, February 19th, 2008 AT 4:48 AM
Tiny
NICKY42
  • MEMBER
  • 2 POSTS
There has been no engine lights could i9t be the masair flow sensor? Or egr valave? Causing this?
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Tuesday, February 19th, 2008 AT 8:23 AM

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