10-17-2009, 11:23 PM
JoeH wrote:
Start with the vacuum hoses connected to the engine, see if any are cracked. With 10+ years on the car the rubber compounds start cracking with age. Used to be they lasted much less, so you replaced the hoses every few years anyways. Check especially at all mounting points and hard bends.
After researching around for any common fault points in the hoses, I found the fuel filter hoses to be a one to check. I replaced the fuel filter about 6k miles ago, but those hoses are good. I checked all hoses up top to try and track it down, but nothing doing. Poked and prodded, moved around, couldn't hear any extra air whistle. Performance really started to suffer at idle, tripped the check engine light again. I think it's time for a dealer appointment. At least a scan of the code will provide a starting point.