Check charging station

[Vinmiz75]

Hello, I have an 04 expedition Eddie Bauer 5.4 v8. My check charging station keeps coming on. My battery is good, and the alternator has been replaced twice in 2 months. I was told it could be the PCM.

 

[Hamfisted]

This issue has been covered dozens of times. Generally it's caused by installing the wrong amperage alternator or just a poor quality rebuilt alternators from the discount parts stores.
What is the amp rating and brand of alternators you've been installing? Unless you have FACTORY navigation option, it should be a 110 amp alternator. Anything else will trigger an error from the PCM and you'll get the message on your instrument cluster.





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[DJ04]

Factory Navigation system has been mentioned numerous times. With that system is a 135 AMP alternator needed? The Ford Parts online system calls out a 110 AMP unit. What's going on? I am confused. 2004 Expe, Eddie Bauer, 5.4 L 4x4 with Factory Nav, fancy radio with 6 CD changer.

 

[Yupster Dog]

Factory Navigation system has been mentioned numerous times. With that system is a 135 AMP alternator needed? The Ford Parts online system calls out a 110 AMP unit. What's going on? I am confused. 2004 Expe, Eddie Bauer, 5.4 L 4x4 with Factory Nav, fancy radio with 6 CD changer.

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@Hamfisted

 

[DJ04]

Hamfisted said:

This issue has been covered dozens of times. Generally it's caused by installing the wrong amperage alternator or just a poor quality rebuilt alternators from the discount parts stores.
What is the amp rating and brand of alternators you've been installing? Unless you have FACTORY navigation option, it should be a 110 amp alternator. Anything else will trigger an error from the PCM and you'll get the message on your instrument cluster.


I am confused. The online FORD parts lookup has a 110 amp alternator for my Expy which is an '04 Eddie Bauer with everything on it (I did not buy it new) including the Factory Navigation System. I have read on this forum abut 135 amp alternators being the right ones and that does not match the online Ford call.