idle prob

1994 LEXUS SC 400
162 MILES
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BARBER72
  • MEMBER
  • 1 POST
car won't hold an idle whn at a stop light unless my foot is slightly on the gas pedal whn in park it's fine I've already cleaned the throttle body but I haven't changed my spark plugs in 2 in a half yrs jst had the o2 sensors done and the coil pack change could it b the plugs and I also had the wires changed
May 18, 2013 at 5:03 PM
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KHLOW2008
  • ✓ASE Certified Mechanic
  • 41,814 POSTS
  • ASE Certified Mechanic
Did you check for trouble codes?
Was the IAC cleaned and checked for sticking?
During cold start, what is the initial idling speed?
Check for vacuum leakages between the air cleaner and throttle body.
May 19, 2013 at 1:28 AM
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