General electrical Question on battery effect on PCM
Is it possible for a weak battery to cause PCM Problems? I keep getting intermittent OBD readings of 1635 on my Buick Park Avenue. The car will run great for a week and then throw the code and stall out. All tests show everything related, PCM & MAP sensors, are OK. Even replaced the sensors. Took it into the shop and they couldn't find anything. the 72 month Battery is in it'* 68th month and a check on it showed 9.5 volts. Here in Hawaii there isn't the extreme cold problems that can kill a battery but it is weak.