08-08-2013, 10:34 PM
Join Date: Apr 2010
Total Cats: 1
i have a weird/intermitent problem wich i think is related to a MS,i would just like to confirm my fears.
i have a 1990 miata with a built 1.6 running a custom gt2560rs/MSPNP ms1v3.
i recently sold the car to one of my good friend and he forgot the key on ``on``position for a long time(couple of hours)and the next morning, the fuel pump wasent priming when the key was on the ``on`` position.
since that day a couple of problem happened,wich are probably all related i guess.
the fuelpump is normally activated by the MS to prime for 3 second. now it`s not turning on at all. we installed a new relay,so the the pump is ``on`` in all time when the car is on the on position. it `solved` the problem and now it`s working great again.
on the first road test, the oilpressure and water temperature needles start freaking and bouncing(a lot, not like a little milimeter) and when the needles freak like this, the alternator stop charging.when the car runs, my multimeter indicate 12.2 volt, while the car runs.
details-alternator is new, not rebuilt, battery is new, and no parasitic lost anywhere,,.
it`s really, really weird, and if i`m not mistaken, the 1990 alternator is regulated via the compurer, right?
so i fear something happened to my mspnp, because not the fans wont come on, the alternator wont charge,and the pump wont prime as it should.
i know it`s a long message, but i tried my best with my broken french accent to explain what`s happening.
if you have some spare time, i would greatly appreciate,since i dont want to let him drive the car as is
thanks a ton for youre time.