Couple of problems

[Blane senn]

First i have 2003 expedition eddie bauer with a 5.4 the battery light stays on even after i have changed out alternater and battery second after i crank it will idle lime it supposed to and then it will idle up and down thiught about changing out the iac valve but just want to be sure before i do that

 

[stamp11127]

Welcome to the site.
For your alternator issue you will need to check some of the wiring. How are you with troubleshooting electric and do you have a dmm?

 

[Blane senn]

Sounds like i need to take it to somebody i can do some stuff not to good with electrical and dont have a clue what dmm is

 

[Blane senn]

I did buy a haynes repair manual and a hand held code scanner

 

[Bedrck47]

Although the Haynes manual has some good information it is not specific to your year and model Suggest you get a copy of the Ford Service manual. See the attached

http://www.expeditionforum.com/threads/factory-service-manuals.25089/

A DMM is a Digital Multi Meter capable of reading Voltage, Amps, Ohms etc. Easy to use and plenty of information on how to use them on youtube

 

[Bedrck47]

BTW Welcome to the Forum

 

[Blane senn]

Thanks dmm (fluke)? I know how to use it i work for power company

 

[stamp11127]

This is interesting, you work for a power company but are not good with electrical....
Can you read wiring diagrams?

 

[Blane senn]

Yea i can read wiring diagrams but i am not a mechanic would u want an auto mechanic trying to get ur power back on

 

[Habbibie]

Yea i can read wiring diagrams but i am not a mechanic would u want an auto mechanic trying to get ur power back on

I work for a power company as well (ComEd) and you have to be very mechanically inclined to carry your weight around in this field. I can fix your car, then your house, and maybe even instal a back up generator with your choice of either an ATS or MTS. Guessing you sit behind a desk, not a field tech

 

[stamp11127]

With the engine off check for battery voltage between the output stud on the alt and case ground. If you have voltage here then the field coil inside the alternator isn't being excited. I'll try to post the diagram tonight when I have access to them.

 

[Blane senn]

Thanks

 

[Blane senn]

I do not sit behind a desk i am a service man been doing it for 24 yrs i set meters pull meters get outages back on shoot trouble and that sort of stuff i am good at what i do i deal with 7200-14400 line voltage and i climb poles we have engineers to fiqure out the complicated stuff they tell me what i need to do to rectify the problem and i can use a volt meter i can do simple stuff like change out stuff on my expedition but i dont have the confidence to trace stuff out that was all i was saying did not realize this was going to be a job interview Habbibie

 

[Bedrck47]

CALM DOWN GUYS

Posting some prints for you as I think this is what stamp is going to send you. Not sure if your expy is an early or late edition
The only difference between the editions is one has a FUSE # 9 and one doesn't

for stamp if other prints are need let me know I will post them for you

 

[1955moose]

Dmm is digital multi meter. You can buy them as cheap as $5.00, but you have to know how to use it. These vehicles can be very tricky, if your not good with electronics.


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[Blane senn]

I know how to use a fluke volt meter is that not the same?

 

[Blane senn]

If not will buy what i need and figure the dmm out

 

[1955moose]

Oh yeah, fluke is the Cadillac of meters. Even I don't have one that good.


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[1955moose]

After conferring with another forum member, he suggested to use an amp meter to find your loss. You'll want to charge your battery fully before you start pulling fuses.


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