The car: 1998 Isuzu Hombre XS, 60000 miles, 5sp, 2.2l.
Recently replaced alternator, battery and belt.
While the engine is cold (about the first five minutes) the voltage
indicator is 'unstable', as if the alternator is not working at all (approx.
12V) or is not putting out full voltage. However it will occasionally move
up to full 14V. Even after the first 5 minutes the voltage is still
dropping occasionally below the 14V. Also, if RPM goes above 3500, voltage
will drop to 12V, no matter how long its been driving.
Could this be caused by anything but the alternator, or did I just get a bad
Thanks in advance for your advice!