Question about 1997 Ford Expedition
While idling, idle drops when heaters turned on, idle surges engine just rebuilt bored over 40 replaced cam sensor ,rebuilt injecters, also have a whirling sound from back drivers (the loudest area) side of engine (cold) nothing warms up makes noise gets louder as time goes on
Surging idle is usually caused by vacuum leaks. Ford 5.4L engines are notorious for the PCV hose elbow leaking back behind the throttle body.
The PCV tube goes from the right (passenger) side valve cover and loops around behind the valve body. Inspect this hose on BOTH ends.
Posted on Feb 21, 2012
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
New users get 2 Free calls (no credit card required) and instant help on almost anything you can think of (from cars to computers, appliances, handyman, and even pets).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Jun 13, 2014 | 1997 Jeep Grand Cherokee
Jun 23, 2017 | 2000 Ford Expedition
Mar 20, 2011 | 1997 Ford Expedition
Jan 03, 2011 | 1993 Eagle Talon
Sep 27, 2010 | Toyota Avalon Cars & Trucks
Apr 22, 2010 | 1997 Volkswagen Jetta
Oct 14, 2009 | Chevrolet Suburban 1500 Cars & Trucks
Apr 17, 2009 | 1995 Ford Explorer
Jun 22, 2008 | 1997 Chevrolet K1500
380 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: