SOURCE: 85 Honda Prelude Battery keeps dying
check for electric short.
if you have factory or after market alarm, that may be the cause.
SOURCE: 1984 honda prelude battery on
Do u have the carbureted or fuel injected model? (both were available that year) The carb. model has a separate voltage regulator which is mounted on the right front shock tower. The fuel injected model is inside the alternator, under the end cover.
Have the alt. tested before u purchase a new one to make sure that's the problem. Most parts stores will check it for free. Be sure to disconnect the neg. battery cable before u start to remove it. Let me know how u make out. Curt
SOURCE: Charging problem.. Wont charge battery
The instructions for installing a new alternator usually read to fully charge the battery (12.3 - 12.8 volt range). Otherwise, the alternator will be damaged when it initializes. I have seen some extreme damage result from installing a new alternator with a low-charge battery. The torque required to turn an alternator when damaged in this scenario is unbelieveable!
SOURCE: 1985 Honda Prelude replaced alternator and
I had an 84 Prelude with a similar problem. I will assume that the car runs just fine as though there is nothing wrong but has the light on. When this happened to me it was just a bad diode in the alternator. If the battery takes a load fine and shows good charge then take off the alternator, take it back to autozone or wherever you bought it and have them test it. I would bet there is a diode bad and they will give you a replacement. Good luck!
Testimonial: "yes we have so far replaced 4 times, maybe one will work some day."
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