You did not specify what is wrong when stopped at a light. Is the idling speed too low or is it misfiring?
If idling speed is too low, you should be able to get the job done easily. Remove air intake hose and spray carb cleaner into the throttle body. Use a tooth brush to scrub the interior of the throttle body, paying attention to the area where the throttle plates closes. A rag would be useful to wipe off the grime. Spray carb cleaner until interior is clean. On top of throttle body there is the idle adjusr screw. Remove it and spry carb cleaner when you were spraying into the throttle body.
EACV (IAC)is located behind intake manifold.
Remove holding bolts and spray carb cleaner into the ports of the IAC and let it soak for a few minutes.
Use carb cleaner clean the IAC till it does not much signs of dirt inside.
Reinstall IAC and throttle adjust screw. Fully tighten the idle adjust screw till it stops, DO NOT force the scre when it reaches its end, back off 1/2 to 3/4 turn.
Start engine and let it warm up to operating temperature and check idling speed, adjust if necessary.
Wednesday, December 22nd, 2010 AT 12:23 PM