1995 Toyota Tercel 4 cyl Two Wheel Drive Manual 166000 miles
Hi. I have read in your archive of questions that alternators cannot run at full load for a very long time, so I want to describe this issue I'm having to see if its normal or not. I replaced my alternator with a high-quality rebuilt unit about 6000 miles ago for the same problem I'm about to describe. I use my car for work and this involves a lot of idling while using most of the accessories at times. When it's raining, I might have the defoggers, headlights, hazard lights, wipers, blower motor, and inevitably the cooling fan operating at idle for a long period of time. I've noticed that after the car has been idling for an hour or so, the engine really slows down in rhythm with the various loads--you can hear the cooling fan really struggle when it cycles. Then the alternator light starts to gradually come on. I checked the battery and alternator with no accessories turned on. The voltage across the terminals was 12.98 with the engine off, and 14.14 at idle. However, I checked the voltage again with the charging system loaded as I've described and the voltage gradually dropped to around 10 at times. Could I have a defective alternator or am I simply asking it to do something it was not designed to do? Any information would be helpful. Thanks.
have the same problem?
Wednesday, September 29th, 2010 AT 7:26 PM