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1998 Ford Expedition - Page 10 Questions & Answers
What does MAF mean
MAF stands for Mass Air Flow. Your MAF meter is located in the inlet snorkle between the air filter housing and the throttle body.
7/9/2014 2:24:25 AM •
1998 Ford...
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Answered
on Jul 09, 2014
Check engine light code P0401 98 Ford expedition
OBD-II Trouble Code P0401 - Insufficient EGR Flow
EGR stands for Exhaust Gas Recirculation. It is part of the vehicle emmissions system, and is used to reduce combustion temperature and pressure to control Oxides of Nitrogen. There are generally three parts to the EGR system: the EGR valve, an actuator solenoid, and a differential pressure sensor EGR (DPFE). These things work together to deliver the correct amount of recirculation based on engine temperature, load, etc. The P0401 code means that OBD detected an insufficient amount of EGR. You may notice drivability problems such as pinging (a.k.a. pre-ignition knock) when the engine is under load or the vehicle is at higher speeds. There may also be other symptoms.
A code P0401 most likely means one or more of the following has happened:
The DPFE (differential pressure feedback EGR) sensor is faulty and needs to be replaced
There is a blockage in the EGR (tube), most likely carbon buildup
The EGR valve is faulty
The EGR valve may not be opening due to a lack of vaccuum
Check it and keep us updated. Hope this helps (remember to rating this free answer).
6/3/2014 9:53:17 AM •
1998 Ford...
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Answered
on Jun 03, 2014
Where is the fuel injector relay fuse on a 98 ford expedition
In the Power Distribution Box-the fuse relay block under hood- it's on the driver's side.
it is fuse # 24, a 30 amp green fuse. This fuse is only hot in run or start, so with key on, the fuse sends power to the PCM Power Relay (also in the power distrib. box), turning the relay on so power goes to the fuel injectors, among other things..
5/25/2014 6:46:36 PM •
1998 Ford...
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Answered
on May 25, 2014
Why is rear stock subwoofer not working?
I need to have more info about how you installed it, did you use rca wires from the radio to the amp.? Make sure the sub setting on radio is turned on. Make sure rca wire are in the input connection and not output, also check you connection from radio that they're in rite place. I really need more info about the map of your wireing
5/12/2014 3:28:45 AM •
1998 Ford...
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Answered
on May 12, 2014
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