Well after owning my 93 Fox Mustang for years and finally now deciding to mount firewall ground after years of reading about why it is needed It is finally installed!
So I have been having issues with my 93 Fox Mustang with A/C on at max and headlights on at same time or volts dropping down at idle to the "M" on factory gauge but when I get up to speed it really never goes up to where it needs too be when I first start car.
Yes I have 3G alternator with that big thick power wire and a 93 Cobra overdrive pulley but something never seemed right during summer with all those accessories on at once. I noticed there was a ground wire in back firewall that was not connected to anywhere opposite of firewall. I guess when I had heads removed and replaced my mechanic never put back ground on back of head stud, so after all this time I finally bolted that other side of ground to a nut that is behind cylinder head.
Now I can't say how dumb I was to not hook this up many years ago volts do not drop one bit with everything on AT ALL and my temperature gauge now seems a bit consistent and does not go up or down as much, only issue I am having now are lights flickering a bit. But have read it may now be voltage regulator behind alternator, and I know battery cables are not bad replaced those new and bought factory cables as well.
So if any of you back there experiencing any issues with voltage going up or down too much with all accessories on make sure your grounds are tied down or secured!!
So I have been having issues with my 93 Fox Mustang with A/C on at max and headlights on at same time or volts dropping down at idle to the "M" on factory gauge but when I get up to speed it really never goes up to where it needs too be when I first start car.
Yes I have 3G alternator with that big thick power wire and a 93 Cobra overdrive pulley but something never seemed right during summer with all those accessories on at once. I noticed there was a ground wire in back firewall that was not connected to anywhere opposite of firewall. I guess when I had heads removed and replaced my mechanic never put back ground on back of head stud, so after all this time I finally bolted that other side of ground to a nut that is behind cylinder head.
Now I can't say how dumb I was to not hook this up many years ago volts do not drop one bit with everything on AT ALL and my temperature gauge now seems a bit consistent and does not go up or down as much, only issue I am having now are lights flickering a bit. But have read it may now be voltage regulator behind alternator, and I know battery cables are not bad replaced those new and bought factory cables as well.
So if any of you back there experiencing any issues with voltage going up or down too much with all accessories on make sure your grounds are tied down or secured!!