2000 Ford F250 warnng light flickering

FED 387 · 02-19-2014, 09:36 PM

have 2000 Ford F250 Diesel on the way home from work the light in the lower left corner of the dash looks like a battery started flickering--- lights seem OK amp gauge is where it should be. If the engine RPM is over say 1500 the light goes out but intermittently might come back on--- at an idle up to about 1200-1500 in neutral the light will maybe stay maybe go off--- I'm thinking alternator might be going bad--- is there a voltage regulator on these things?? Any suggestions what it is??? Both batteries are less than 4 years starts OK too---- Any suggestions on where to look??? What is the alternator supposed to put out (voltage) at an idle or wherever I test it---thanx FED 387

Rob Petrie E395 · 02-19-2014, 10:55 PM

Pull the alternator off it and have it tested. Most auto parts stores do it for free. My bet is its going bad.

FED 387 · 02-19-2014, 11:48 PM

thanx Rob that's what I was thinking too-- will check it out tomorrow--FED 387

02-19-2014, 09:36 PM	#1
FED 387 VIP Member Join Date: Jun 2006 Posts: 3,409 Likes: 505 Liked 329 Times in 177 Posts	2000 Ford F250 warnng light flickering have 2000 Ford F250 Diesel on the way home from work the light in the lower left corner of the dash looks like a battery started flickering--- lights seem OK amp gauge is where it should be. If the engine RPM is over say 1500 the light goes out but intermittently might come back on--- at an idle up to about 1200-1500 in neutral the light will maybe stay maybe go off--- I'm thinking alternator might be going bad--- is there a voltage regulator on these things?? Any suggestions what it is??? Both batteries are less than 4 years starts OK too---- Any suggestions on where to look??? What is the alternator supposed to put out (voltage) at an idle or wherever I test it---thanx FED 387

02-19-2014, 10:55 PM	#2
Rob Petrie E395 VIP Member Join Date: Dec 2007 Location: Woodlawn IL Posts: 1,092 Likes: 162 Liked 216 Times in 77 Posts	Re: 2000 Ford F250 warnng light flickering Pull the alternator off it and have it tested. Most auto parts stores do it for free. My bet is its going bad.

02-19-2014, 11:48 PM	#3
FED 387 VIP Member Join Date: Jun 2006 Posts: 3,409 Likes: 505 Liked 329 Times in 177 Posts	Re: 2000 Ford F250 warnng light flickering thanx Rob that's what I was thinking too-- will check it out tomorrow--FED 387