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Engine idle - 1993 Buick lasabrebre

Tiny
WAYNE KIRKMAN
  • MEMBER
  • 1993 BUICK LESABRE
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 95,000 MILES
I have a 1993 buick lesabre. Engine idles at 2000 rpms. Kicking the gas pedal will sometimes lower the rpms back to 600 rpms. At the same time the transmission started to refuse to go into overdrive (4th gear).
I have installed a new trans filter and fluid with no
help. Also, at the same time, the cruise control stopped working. I have replaced a lose vacuum hose which is attached to a round unit on the front driver side of the engine. It did not help the problem. Also the "service engine" warning light came on.
Could these problems be caused by a vacuum hose leak somewhere?
THANKS Wayne
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Friday, May 13th, 2011 AT 6:48 AM

1 Reply

Tiny
FIXITMR
  • MECHANIC
  • 9,990 POSTS
Get the code read. But cruise is part of throttle control so sticky throttle could be related cruise problem have you checked all fuses? And sure, keep looking for any bad hoses or parts that effect vacuum.
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Friday, May 13th, 2011 AT 6:55 AM

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