I changed the battery in my 1993 Buick Park Avenue. Now it behaves funny. It will start fine, then after a while it will exhibit the following behaviors:
the idle raises and become slightly irregular,
the fan comes on full force and will not turn off,
the anti-lock brake warning light comes on,
all of the gauges go nuts (volt meter shows 0 volts and the warning light comes on, the temperature gauge goes full hot and the warning light comes on, oil pressure gauge goes to zero, fuel gauge is unchanged but the low fuel light comes on)
After a while the car may start running smoothly again (low steady idle, all gauges showing normal.) Then it may start the erratic behavior again. If I turn off the car when it is running poorly there is a fifty-fifty chance it will start fine.
Since the volt meter showed a short I put a DVM on the battery to monitor it during this behavior. When the engine is running the battery shows a steady 13.5 V at all times (12.5 V when engine off) The DVM showed no AC component even when the car was running wacky.
have the same problem?
Wednesday, September 18th, 2013 AT 11:50 AM