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Originally Posted by amigo-2k
Normally if the CEL and tranny light are on it means it has electrical problems. Either a battery on its last leg or more commonly the altenator is on its way out.
-Ryan
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I have the same problem with a 2000 rodeo ls. I have had it looked at by the Isuzu dealer and both times they got it wrong. I have had the battery checked and it is fine. Im thinking of buying an alternator and having it installed whether good or bad. I don't want to pay for a four year old alternator to be removed and tested, then re installed, only to fail later. Might as well just change it, would be cheaper in the long run.
Heres my question. Would a loose serpentine belt cause the alternator to under generate power and under supply the transmission with adequate signal strenth? Also, if the alternator was under producing current wouldn't you notice it on any other instruments or the radio?
John