A girl at work has a 97 escort with an idling problem. It has an EXTREMELY low idle to the point that it almost stalls and it'* running very rough at idle. If you rev it up it does just fine. I put my scanner on it, and the car has no codes at all stored, so I don't think it'* a bad sensor. I checked the air filter and that too is fine. I"m thinking possibly a bad/broken vacuum hose but I don't hear any hissing under the hood. any ideas? :(
Thanks for any ideas! I want to fix her car because if I do, she promised to do me a huge favor.