1999 Pontiac Grand Am Repair Question
Topics covered: Body, Throttle body, Engine.
Mileage: 143,000 miles.
Mileage: 143,000 miles.
Asked on April 17, 2012
I OWN A 1999 PONTIAC GRAND AM WITH A 2.4L TWIN CAM. RECENTLY IVE BEEN HAVING ELECTRICAL PROBLEMS, THE TRAC OFF LIGHT AND THE SERCICE ENGINE LIGHT GO ON AND IT STARTS RUNNING ROUGH. IF I PUT IT ON THE SCANNER, IT IT BRINGS UP AN IDLE SENSOR CODE, WHICH I
SAME AS ABOVE
Asked by josephmanuel69Answer
Replied on April 17, 2012
THE SERVICE ENGINE LIGHT AND TRAC OFF LIGHT GO ON, AND IT STARTS RUNNING ROUGH. THE SCANNER CODE SAYS ITS THE IDLE SENSOR , BUT I HAD THE DEALERSHIP REPLACE IT. WHEN I RESET THE SERVICE ENGINE LIGHT TO OFF IT RUNS FINE. THEY TOLD ME I MIGHT NEED TO CLEAN THE THROTTLE BODY INTAKE. WHAT SHOULD I TRY.
Replied on April 17, 2012
is it still giving same code for IAC?
Replied on April 17, 2012
common causes besides IAC are
A vacuum leak
Leaking air intake after the throttle body
EGR valve leaking vacuum
A faulty positive crankcase ventilation (PCV) valve
Damaged/failed/dirty throttle body
Failed EVAP system
Replied on April 19, 2012
it sounds like vacuum leak on the drivers side, but the hose runs through a bundle of wires, covered with heat insulated tubing