voltage

Hi all, I just purchased a used 2011 Mazda 2. As usual, i used to plugged in a Cigarette Lighter Socket splitter with voltage measuring function. I noticed that the voltage was good initially when i started the engine (reading 13.4-14v) and while the car run for a while, say 15 mins, the...

So I've been trying to find out what's been goin on with my hpfp. I just got a new oem one because I thought that was the problem but guess what it wasn't. Looks like I wasted $400 lol. But my problem I found was that it's not getting the voltage it needs. I put a jumper wire from the battery to...

Hello all. I just bought an 02 protege5 and the more i look at it, the more i find has been done to it. For example, one of the previous owners installed a siren in the grille, the wiring to which no longer functions, but nonetheless is there. The same guy, i assume, put in an aftermarket...