Question about 1994 Pontiac Firebird
My 94 V6 Firebird runs great but since a few weeks it starts running less smooth after about 10 minutes driving: engine staals sometimes and runs poor when idling; like on 5 cylinders.
I noticed it has been taking some dirt because of a clamp not shutting off the air-intake completely (dirty air-valve) I also cleaned this small valve that regulates the warm air-loop and that seems to do some good.
Is there something else I must/can clean?
I would suggest a computerised diagnostic to find the fault else it may take forever..
Posted on Jun 15, 2009
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Posted on Jan 02, 2017
Tips for a great answer:
Nov 06, 2012 | 1986 Nissan Maxima
This problem is commonly caused by a dirty automatic idle speed control valve and throttle valve but always run a OBD2 fault code as well as the cleaning procedure. Buy a can of throttle valve cleaner (do not use carburetor spray cleaner!) from NAPA or Carquest (made by CRC chemicals) and spray it into the air intake while the engine is running, use up about 1/2 the can, engine will try to stall hold the speed up, shut it down and let it soak for 30 minutes, restart and blow out the remaining fluid, shut it down and disconnect the negative battery cable for 5 Min's to reset the base idle control
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