2000 Ford Expedition Repair Question
Topics covered: Fuel pressure, Vacuum leak.
Mileage: 90,000 miles.
Mileage: 90,000 miles.
Asked on December 31, 2011
Engine idle eratic when started cold
No codes, runs great after warmed up
Asked by tsnakeAnswer
Replied on December 31, 2011
Check fuel pressure and for vacuum leaks.
Replied on December 31, 2011
Thanks will check further but didn't find any leaks before and would think that the fuel pressure would tend to be lower when hot if the pump was starting to fail.
Replied on December 31, 2011
Resistance in wires is higher when cold and lower when hot. If the internal resistance of the pump has increased, the cold wires can make it worse.