5.0L (1979-1995) MustangTechnical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.
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alright on my 89 5.0 the alternator guage in the dash doesnt want to move.stays right abouve the red but below the middle line. i went out and strated it my head lighs are still bright no problems with anything. the other day i noticed the guage danceing a little bit. could this just be a guage or something else. i know im not really giveing you much but im at home and have no tools here not even a multimeter just looking for best guess.
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if the gauge is going up and down, could be a couple of things, but kind of need more details. Could be your battery cable ends are bad and need to be replaced, they also could be lose. You could also have a loose ground, or if you have underdrive pullies, that will make it go up and down as well.
1994 cobra -
Afr 165s, F303 (too big), full exhaust, tko 600, rebuilt 306 with DSS level 10 block, TFS Street manifold, 3.73s, 31 spline axles, ford racing 31 spline t-lok w/ carbon fiber discs, mm sub-frame connectors, UPR lower control arms, steeda strut tower brace, and lots of other stuff.
1994 mustang gt -
Home ported stock lower manifold, and rebuilt stock heads.
diodes....do your lights fliker at night a bit when just idleing the car?
__________________ I do appreciate everyone being civil...it makes things much more enjoyable...also, I may not be able to answer every question/observation/comment posed to me as I am only one person and have a job/family so I hope you understand. I will not use this as an excuse to skip over something though. If it is important and I haven't addressed it already...I will do my best to get to it.
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maybe voltage regulator, mine went out. but when i replace alt it still dances around still between the line just below the middle and the line just above the middle depending if its under a load it goes up or if i turn on my lights or heater it goes down a lil bit. it doesnt jump eratically but it does move promptly when i do something is this bad?
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