Battery gage read high
I replace my battery and alternator three
months ago, and now my battery gage stay
on high all the time when I'm driving. I also
noted when I turn on my lights or roll up my
window my car accelerates.
Don't trust the gauge, get a voltmeter and see what it is actually putting out, the fact that the RPM's climb when a load is put on it makes me think it is not outputting what it should be and the computer is trying to compensate by raising the engine speed. HTH
Go to one of your local parts houses and ask them to run a load test on your charging system. They should be able to tell you EXACTLY what the problem is.
Search Ford Expedition Questions
Are you a UK consumer? CarGurus now has a discussion forum in the UK.
Ford Expedition Experts