1997 Pontiac Grand Am GT 2.4L Twin Cam 16 Valve DOHC with a 2001 2.4L Twin Cam 16 Valve DOHC engine in it with original 1997 wire harness and computer. I have a check engine light on for a knock sensor and EGR Insufficient Flow. My question is, what do I need to look for as far as the EGR Insufficient Flow goes? Do I need to replace the EGR Valve, clogs, cracks? If it is clogs or cracks what areas and parts do I need to check? I know when I turn the car off I hear like a pressurized sound leaking. Hard to explain the sound exactly though. I know it is coming from the driver side of the engine, somewhat around the EGR but not sure if it is the EGR. Please if you can help let me know. Thank you.
Also, one small question off topic here, what would cause my car to top out at 4000rpm at idle? It use to go to about 6000rpm at idle then top out but after changing the top motor mount it went to 4000rpm. Any ideas?
Sunday, December 19th, 2010 AT 2:07 AM