Thread: 93 300E with idle surge and poor gas mileage
View Single Post
  #2  
Old 11-22-2004, 10:59 PM
suginami suginami is offline
Moderator
  
Join Date: Dec 2001
Location: Southern California, U.S.A.
Posts: 8,538
Man, we have the same car, and I have never achieved fuel economy of just under 30 mpg. Even driving to Las Vegas with the cruise control pegged at 65 mph, I still got just 25-ish. I'm averaging about 21-22 mpg since I've owned the car, so I think your fuel economy is in the normal range.

A fluctuating idle is generally caused by either a vacum leak, bad mass air meter, or bad throttle actuator.
__________________
Paul S.

2001 E430, Bourdeaux Red, Oyster interior.
79,200 miles.

1973 280SE 4.5, 170,000 miles. 568 Signal Red, Black MB Tex. "The Red Baron".
Reply With Quote