1997 expedition after i go over 40 miles engine is growling shifting but a littlle sluggish
I have had similar complaints that turned out to be the Idle Air Control (IAC) solenoid. The solenoid can get a little weak and air coming in through the intake at certain speeds can cause it to start vibrating. It sets off a moaning sound that resonates through the intake ducts and can get VERY loud. Sometimes it almost sounds like a fog horn.
If this is the type of noise you are hearing, replacing the IAC will fix it.
Other than that, the only suggestion I have is to see if you can get it to make the noise while the vehicle is sitting still. Slowly accelerate the engine speed with the vehicle stopped and the transmission PARK to see if it will make the noise. If the vehicle has to be moving to make the noise, then that eliminates several possibilities like the IAC, fan clutch, pullies, etc.....things that operate the same whether the vehicle is moving or sitting still.
Nov 22, 2011 |
1997 Ford Expedition