Help Please!

1994 PONTIAC BONNEVILLE
160,700 MILES • 6 CYL • 2WD • AUTOMATIC
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GOTMESTUMPED
  • MEMBER
  • 1 POST
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?
Feb 20, 2011 at 3:14 PM
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FIXITMR
  • ✓Experienced Mechanic
  • 9,989 POSTS
vacuum leak.
Feb 20, 2011 at 3:21 PM
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WRENCHTECH
  • ✓Experienced Mechanic
  • 20,760 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.

Feb 20, 2011 at 3:51 PM
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