1999 Pontiac Grand Am Electrical Issues

Tiny
JOSEPHMANUEL69
  • MEMBER
  • 1999 PONTIAC GRAND AM
  • 143,000 MILES
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
Tuesday, April 17th, 2012 AT 6:40 AM

9 Replies

Tiny
FIXITMR
  • MECHANIC
  • 9,990 POSTS
Restate symptoms in reply.
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Tuesday, April 17th, 2012 AT 6:43 AM
Tiny
JOSEPHMANUEL69
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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.
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Tuesday, April 17th, 2012 AT 6:48 AM
Tiny
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Is it still giving same code for IAC?
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Tuesday, April 17th, 2012 AT 7:28 AM
Tiny
JOSEPHMANUEL69
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Yes
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Tuesday, April 17th, 2012 AT 7:34 AM
Tiny
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What is the code?
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Tuesday, April 17th, 2012 AT 8:11 AM
Tiny
JOSEPHMANUEL69
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P0507
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Tuesday, April 17th, 2012 AT 2:47 PM
Tiny
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High idle is all that indicates.
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Tuesday, April 17th, 2012 AT 5:39 PM
Tiny
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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
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Tuesday, April 17th, 2012 AT 5:46 PM
Tiny
JOSEPHMANUEL69
  • MEMBER
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It sounds like vacuum leak on the drivers side, but the hose runs through a bundle of wires, covered with heat insulated tubing
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Thursday, April 19th, 2012 AT 3:48 AM

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