Headlights and dashlights pulsating????
03-23-2009, 02:17 AM
#1
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Headlights and dashlights pulsating????
Thanks for having me,I have had this 1997 F150 4x4 for just 3 days. It has a 5.4 engine and runs great, the very first night after starting up,I
could not believe my eyes the headlights and dashlights were pulsating.
After running for about 10 miles IT STOPPED pulsating and was normal, I
replaced the alternator thinking it was going bad,Damn if it did not do the
same thing the very next day,I would appreciate any Ideas on what my
problem may be coming from,I have had 2 other F150's and never seen
this before.Thanks
could not believe my eyes the headlights and dashlights were pulsating.
After running for about 10 miles IT STOPPED pulsating and was normal, I
replaced the alternator thinking it was going bad,Damn if it did not do the
same thing the very next day,I would appreciate any Ideas on what my
problem may be coming from,I have had 2 other F150's and never seen
this before.Thanks
03-23-2009, 10:13 AM
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Do your lights pulsate much like a motorcycle as it idles? Even though you've replaced the alternator it could not be making enough amps.. have you had it tested or pulled the battery cable while idling? If the amperage tests out okay you may have a loose ground.. but if it still acts the same.. stopping after running for 10 minutes or so its def a alternator issue.. let us know what you find.
03-23-2009, 09:55 PM
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Yes,I did have the alternator tested this morning and it was perfect,so was the
battery,Iam thinking ground also,would it hurt to put a new ground wire on there
somewhere,I cant seem to locate the one that is supposed to be on there? Thanks
for the help!
battery,Iam thinking ground also,would it hurt to put a new ground wire on there
somewhere,I cant seem to locate the one that is supposed to be on there? Thanks
for the help!
03-23-2009, 09:58 PM
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check your grounds... but I have the SAME exact problem on one of my hondas right now, only its idling high as hellwater too. In my car, it's because the wiring harness is rubbed thru on the frame and is shorting out. A pretty big deal with my generation honda. Honda has a service bulletin out for it in fact.
03-24-2009, 12:36 PM
#5
Ok, resume original topic!
03-24-2009, 10:16 PM
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03-25-2009, 11:37 AM
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