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Help Please!

Tiny
GOTMESTUMPED
  • MEMBER
  • 1994 PONTIAC BONNEVILLE
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 160,700 MILES
94 bonneville SE dies when I slow down to make a turn or sometimes when I stop at traffic sign otherwise it cranks easily. Motor seems to run smooth. What could make this happen?
Sunday, February 20th, 2011 AT 11:14 PM

2 Replies

Tiny
FIXITMR
  • MECHANIC
  • 9,990 POSTS
Vacuum leak.
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Sunday, February 20th, 2011 AT 11:21 PM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,757 POSTS
You may have a bad IAC ( idle air control) but try eliminating any vacuum leaks and cleaning the throttle body first. Remove the intake snorkel, have someone hold the throttle wide open for you and scrub the back side of the throttle plate and surrounding bore with an old tooth brush and some carb cleaner. Be sure to spray some into the small holes next to the throttle plate. That should help stabilize the idle. If it still has a problem, replace the IAC.
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Sunday, February 20th, 2011 AT 11:51 PM

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